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test/index.spec.js | 83 +++++ 22 files changed, 560 insertions(+), 410 deletions(-) create mode 100644 example/development.html diff --git a/README.md b/README.md index 5f930c9..38cafac 100644 --- a/README.md +++ b/README.md @@ -10,6 +10,9 @@ Javascript module to be run in the web browser for image compression. - **Multi-thread** (web worker) non-blocking compression are supported through options. ## Change log ## +v1.0.1 +- fixing bug related to wrong image output resolution in some case + v1.0.0 - breaking change: change "imageCompression" function signature - use of OffscreenCanvas when support, fallback to document.createElement('canvas') @@ -141,6 +144,16 @@ cd browser-image-compression/example # open "basic.html" on your browser ``` +## Contribution ## +1. fork the repo and git clone it +2. run `npm run watch` # it will watch code change in lib/ folder and generate js in dist/ folder +3. add/update code in lib/ folder +4. try the code by opening example/development.html which 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diff --git a/coverage/lcov-report/image-compression.js.html b/coverage/lcov-report/image-compression.js.html
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/**
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  *
@@ -697,14 +697,14 @@ 

   const ctx = canvas.getContext('2d')
  
   const maxWidthOrHeight = options.maxWidthOrHeight
-  const needToHandle = Number.isInteger(maxWidthOrHeight) && (img.width > maxWidthOrHeight || img.height > maxWidthOrHeight)
-  Iif (needToHandle) {
-    if (img.width > img.height) {
-      canvas.width = maxWidthOrHeight
-      canvas.height = (img.height / img.width) * maxWidthOrHeight
+  const needToHandle = Number.isInteger(maxWidthOrHeight) && (img.width > maxWidthOrHeight || img.height > maxWidthOrHeight)
+  if (needToHandle) {
+    if (img.width > img.height) {
+      canvas.width = maxWidthOrHeight
+      canvas.height = (img.height / img.width) * maxWidthOrHeight
     } else {
-      canvas.width = (img.width / img.height) * maxWidthOrHeight
-      canvas.height = maxWidthOrHeight
+      canvas.width = (img.width / img.height) * maxWidthOrHeight
+      canvas.height = maxWidthOrHeight
     }
   } else {
     canvas.width = img.width
@@ -727,8 +727,8 @@ 

 export function followExifOrientation (img, canvas, exifOrientation) {
   const ctx = canvas.getContext('2d')
  
-  const width = img.width
-  const height = img.height
+  const width = canvas.width
+  const height = canvas.height
  
   // set proper canvas dimensions before transform & export
   Iif (4 < exifOrientation && exifOrientation < 9) {
@@ -751,7 +751,7 @@ 

     default: break;
   }
  
-  ctx.drawImage(img, 0, 0)
+  ctx.drawImage(img, 0, 0, canvas.width, canvas.height)
  
   return canvas
 }

@@ -760,7 +760,7 @@ 

 
 

   Code coverage
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+  generated by istanbul at Fri Mar 08 2019 15:37:33 GMT+0800 (Hong Kong Standard Time)
 

 
 
diff --git a/coverage/lcov.info b/coverage/lcov.info
index 92ba717..1027522 100644
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diff --git a/coverage/utils.js.html b/coverage/utils.js.html
index 79ac7b6..5263980 100644
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@@ -390,15 +390,15 @@ 

  
  
  
-7x
+11x
  
  
  
  
-7x
-7x
+11x
+11x
  
-7x
+11x
  
  
  
@@ -458,18 +458,14 @@ 

  
  
  
-2x
+6x
  
+6x
+6x
+6x
+4x
 2x
 2x
-2x
- 
- 
- 
- 
- 
- 
- 
  
 2x
 2x
@@ -479,6 +475,8 @@ 

 2x
  
  
+6x
+6x
  
  
  
@@ -489,22 +487,24 @@ 

  
  
  
-2x
  
-2x
-2x
  
+6x
  
-2x
+6x
+6x
+ 
+ 
+6x
  
  
  
-2x
-2x
+6x
+6x
  
  
  
-2x
+6x
  
  
  
@@ -512,12 +512,12 @@ 

  
  
  
-2x
+6x
  
  
-2x
+6x
  
-2x
+6x
  
/**
  * getDataUrlFromFile
  *
@@ -697,14 +697,14 @@ 

   const ctx = canvas.getContext('2d')
  
   const maxWidthOrHeight = options.maxWidthOrHeight
-  const needToHandle = Number.isInteger(maxWidthOrHeight) && (img.width > maxWidthOrHeight || img.height > maxWidthOrHeight)
-  Iif (needToHandle) {
-    if (img.width > img.height) {
-      canvas.width = maxWidthOrHeight
-      canvas.height = (img.height / img.width) * maxWidthOrHeight
+  const needToHandle = Number.isInteger(maxWidthOrHeight) && (img.width > maxWidthOrHeight || img.height > maxWidthOrHeight)
+  if (needToHandle) {
+    if (img.width > img.height) {
+      canvas.width = maxWidthOrHeight
+      canvas.height = (img.height / img.width) * maxWidthOrHeight
     } else {
-      canvas.width = (img.width / img.height) * maxWidthOrHeight
-      canvas.height = maxWidthOrHeight
+      canvas.width = (img.width / img.height) * maxWidthOrHeight
+      canvas.height = maxWidthOrHeight
     }
   } else {
     canvas.width = img.width
@@ -727,8 +727,8 @@ 

 export function followExifOrientation (img, canvas, exifOrientation) {
   const ctx = canvas.getContext('2d')
  
-  const width = img.width
-  const height = img.height
+  const width = canvas.width
+  const height = canvas.height
  
   // set proper canvas dimensions before transform & export
   Iif (4 < exifOrientation && exifOrientation < 9) {
@@ -751,7 +751,7 @@ 

     default: break;
   }
  
-  ctx.drawImage(img, 0, 0)
+  ctx.drawImage(img, 0, 0, canvas.width, canvas.height)
  
   return canvas
 }

@@ -760,7 +760,7 @@ 

 
 

   Code coverage
-  generated by istanbul at Wed Feb 06 2019 15:51:16 GMT+0800 (Hong Kong Standard Time)
+  generated by istanbul at Fri Mar 08 2019 15:37:32 GMT+0800 (Hong Kong Standard Time)
 

 
 
diff --git a/dist/browser-image-compression.js b/dist/browser-image-compression.js
index a3fdc56..02d0396 100644
--- a/dist/browser-image-compression.js
+++ b/dist/browser-image-compression.js
@@ -1,2 +1,2 @@
-!function(e,n){"object"==typeof exports&&"undefined"!=typeof module?module.exports=n():"function"==typeof define&&define.amd?define(n):(e=e||self).imageCompression=n()}(this,function(){"use strict";function getDataUrlFromFile(e){return new Promise(function(n,t){var r=new FileReader;r.onload=function(){return n(r.result)},r.onerror=function(e){return t(e)},r.readAsDataURL(e)})}function getFilefromDataUrl(e,n){var t=arguments.length>2&&void 0!==arguments[2]?arguments[2]:Date.now();return new Promise(function(r){for(var i,a=e.split(","),o=a[0].match(/:(.*?);/)[1],s=atob(a[1]),c=s.length,f=new Uint8Array(c);c--;)f[c]=s.charCodeAt(c);try{i=new File([f],n,{type:o})}catch(e){(i=new Blob([f],{type:o})).name=n,i.lastModified=t}r(i)})}function loadImage(e){return new Promise(function(n,t){var r=new Image;r.onload=function(){return n(r)},r.onerror=function(e){return t(e)},r.src=e})}function drawImageInCanvas(e){var n;return(n="function"==typeof OffscreenCanvas?new OffscreenCanvas(e.width,e.height):document.createElement("canvas")).getContext("2d").drawImage(e,0,0,n.width,n.height),n}function drawFileInCanvas(e){return new Promise(function(n,t){var r,i,a=function $Try_2_Post(){try{return i=drawImageInCanvas(r),n([r,i])}catch(e){return t(e)}},o=function $Try_2_Catch(n){try{return getDataUrlFromFile(e).then(function(e){try{return loadImage(e).then(function(e){try{return r=e,a()}catch(e){return t(e)}},t)}catch(e){return t(e)}},t)}catch(e){return t(e)}};try{return createImageBitmap(e).then(function(e){try{return r=e,a()}catch(e){return o()}},o)}catch(e){o()}})}function canvasToFile(e,n,t,r){var i=arguments.length>4&&void 0!==arguments[4]?arguments[4]:1;return new Promise(function(a,o){var s;return"function"==typeof OffscreenCanvas&&e instanceof OffscreenCanvas?e.convertToBlob({type:n,quality:i}).then(function(e){try{return(s=e).name=t,s.lastModified=r,$If_4.call(this)}catch(e){return o(e)}}.bind(this),o):getFilefromDataUrl(e.toDataURL(n,i),t,r).then(function(e){try{return s=e,$If_4.call(this)}catch(e){return o(e)}}.bind(this),o);function $If_4(){return a(s)}})}function getExifOrientation(e){return new Promise(function(n,t){var r=new FileReader;r.onload=function(e){var t=new DataView(e.target.result);if(65496!=t.getUint16(0,!1))return n(-2);for(var r=t.byteLength,i=2;ii||e.height>i);return a?e.width>e.height?(n.width=i,n.height=e.height/e.width*i):(n.width=e.width/e.height*i,n.height=i):(n.width=e.width,n.height=e.height),r.drawImage(e,0,0,n.width,n.height),[n,a]}function followExifOrientation(e,n,t){var r=n.getContext("2d"),i=e.width,a=e.height;switch(4a?(s.width*=.9,s.height*=.9,s.getContext("2d").drawImage(o,0,0,s.width,s.height),canvasToFile(s,e.type,e.name,e.lastModified,m).then(function(e){try{return l=e,$Loop_4}catch(e){return r(e)}},r)):[1]},h=function $Loop_4_exit(){return c.call(this)};return(f=function(e){for(;e;){if(e.then)return void e.then(f,r);try{if(e.pop){if(e.length)return e.pop()?h.call(this):e;e=u}else e=e.call(this)}catch(e){return r(e)}}}.bind(this))(u)}var g,d=function $Loop_6(){return i--&&l.size>a?(s.width*=.9,s.height*=.9,s.getContext("2d").drawImage(o,0,0,s.width,s.height),m*=.9,canvasToFile(s,e.type,e.name,e.lastModified,m).then(function(e){try{return l=e,$Loop_6}catch(e){return r(e)}},r)):[1]},p=function $Loop_6_exit(){return c.call(this)};return(g=function(e){for(;e;){if(e.then)return void e.then(g,r);try{if(e.pop){if(e.length)return e.pop()?p.call(this):e;e=d}else e=e.call(this)}catch(e){return r(e)}}}.bind(this))(d)}catch(e){return r(e)}}.bind(this),r)}catch(e){return r(e)}}.bind(this),r)}catch(e){return r(e)}}.bind(this),r)})}var e,n=0;var t=function createWorker(e){return new Worker(URL.createObjectURL(new Blob(["(".concat(e,")()")])))}(function(){self.addEventListener("message",function(e){return new Promise(function(n,t){var r,i,a,o,s=e.data;r=s.file,i=s.id,a=s.imageCompressionLibUrl,o=s.options;var c=function $Try_1_Post(){try{return n()}catch(e){return t(e)}},f=function $Try_1_Catch(e){try{return self.postMessage({error:e.message,id:i}),c()}catch(e){return t(e)}};try{var u;return importScripts(a),imageCompression(r,o).then(function(e){try{return u=e,self.postMessage({file:u,id:i}),c()}catch(e){return f(e)}},f)}catch(e){f(e)}})})});function compressOnWebWorker(r,i){return new Promise(function(a,o){return new Promise(function(s,c){e||(e=function createSourceObject(e){return URL.createObjectURL(new Blob([e],{type:"application/javascript"}))}("\n    function imageCompression (){return (".concat(imageCompression,").apply(null, arguments)}\n    \n    imageCompression.getDataUrlFromFile = ").concat(imageCompression.getDataUrlFromFile,"\n    imageCompression.getFilefromDataUrl = ").concat(imageCompression.getFilefromDataUrl,"\n    imageCompression.loadImage = ").concat(imageCompression.loadImage,"\n    imageCompression.drawImageInCanvas = ").concat(imageCompression.drawImageInCanvas,"\n    imageCompression.drawFileInCanvas = ").concat(imageCompression.drawFileInCanvas,"\n    imageCompression.canvasToFile = ").concat(imageCompression.canvasToFile,"\n    imageCompression.getExifOrientation = ").concat(imageCompression.getExifOrientation,"\n    imageCompression.handleMaxWidthOrHeight = ").concat(imageCompression.handleMaxWidthOrHeight,"\n    imageCompression.followExifOrientation = ").concat(imageCompression.followExifOrientation,"\n    \n    getDataUrlFromFile = imageCompression.getDataUrlFromFile\n    getFilefromDataUrl = imageCompression.getFilefromDataUrl\n    loadImage = imageCompression.loadImage\n    drawImageInCanvas = imageCompression.drawImageInCanvas\n    drawFileInCanvas = imageCompression.drawFileInCanvas\n    canvasToFile = imageCompression.canvasToFile\n    getExifOrientation = imageCompression.getExifOrientation\n    handleMaxWidthOrHeight = imageCompression.handleMaxWidthOrHeight\n    followExifOrientation = imageCompression.followExifOrientation\n\n    function compress (){return (").concat(compress,").apply(null, arguments)}\n    ")));var f=n++;return t.addEventListener("message",function handler(e){e.data.id===f&&(t.removeEventListener("message",handler),e.data.error&&o(e.data.error),a(e.data.file))}),t.postMessage({file:r,id:f,imageCompressionLibUrl:e,options:i}),s()})})}function imageCompression(e,n){return new Promise(function(t,r){var i,a;if(n.maxSizeMB=n.maxSizeMB||Number.POSITIVE_INFINITY,n.useWebWorker="boolean"!=typeof n.useWebWorker||n.useWebWorker,!(e instanceof Blob||e instanceof File))return r(new Error("The file given is not an instance of Blob or File"));if(!/^image/.test(e.type))return r(new Error("The file given is not an image"));if(a="undefined"!=typeof WorkerGlobalScope&&self instanceof WorkerGlobalScope,!n.useWebWorker||"function"!=typeof Worker||a)return compress(e,n).then(function(e){try{return i=e,$If_3.call(this)}catch(e){return r(e)}}.bind(this),r);var o=function(){try{return $If_3.call(this)}catch(e){return r(e)}}.bind(this),s=function $Try_1_Catch(t){try{return compress(e,n).then(function(e){try{return i=e,o()}catch(e){return r(e)}},r)}catch(e){return r(e)}};try{return compressOnWebWorker(e,n).then(function(e){try{return i=e,o()}catch(e){return s()}},s)}catch(e){s()}function $If_3(){try{i.name=e.name,i.lastModified=e.lastModified}catch(e){}return t(i)}})}return imageCompression.getDataUrlFromFile=getDataUrlFromFile,imageCompression.getFilefromDataUrl=getFilefromDataUrl,imageCompression.loadImage=loadImage,imageCompression.drawImageInCanvas=drawImageInCanvas,imageCompression.drawFileInCanvas=drawFileInCanvas,imageCompression.canvasToFile=canvasToFile,imageCompression.getExifOrientation=getExifOrientation,imageCompression.handleMaxWidthOrHeight=handleMaxWidthOrHeight,imageCompression.followExifOrientation=followExifOrientation,imageCompression});
+!function(e,n){"object"==typeof exports&&"undefined"!=typeof module?module.exports=n():"function"==typeof define&&define.amd?define(n):(e=e||self).imageCompression=n()}(this,function(){"use strict";function getDataUrlFromFile(e){return new Promise(function(n,t){var r=new FileReader;r.onload=function(){return n(r.result)},r.onerror=function(e){return t(e)},r.readAsDataURL(e)})}function getFilefromDataUrl(e,n){var t=arguments.length>2&&void 0!==arguments[2]?arguments[2]:Date.now();return new Promise(function(r){for(var i,a=e.split(","),o=a[0].match(/:(.*?);/)[1],s=atob(a[1]),c=s.length,f=new Uint8Array(c);c--;)f[c]=s.charCodeAt(c);try{i=new File([f],n,{type:o})}catch(e){(i=new Blob([f],{type:o})).name=n,i.lastModified=t}r(i)})}function loadImage(e){return new Promise(function(n,t){var r=new Image;r.onload=function(){return n(r)},r.onerror=function(e){return t(e)},r.src=e})}function drawImageInCanvas(e){var n;return(n="function"==typeof OffscreenCanvas?new OffscreenCanvas(e.width,e.height):document.createElement("canvas")).getContext("2d").drawImage(e,0,0,n.width,n.height),n}function drawFileInCanvas(e){return new Promise(function(n,t){var r,i,a=function $Try_2_Post(){try{return i=drawImageInCanvas(r),n([r,i])}catch(e){return t(e)}},o=function $Try_2_Catch(n){try{return getDataUrlFromFile(e).then(function(e){try{return loadImage(e).then(function(e){try{return r=e,a()}catch(e){return t(e)}},t)}catch(e){return t(e)}},t)}catch(e){return t(e)}};try{return createImageBitmap(e).then(function(e){try{return r=e,a()}catch(e){return o()}},o)}catch(e){o()}})}function canvasToFile(e,n,t,r){var i=arguments.length>4&&void 0!==arguments[4]?arguments[4]:1;return new Promise(function(a,o){var s;return"function"==typeof OffscreenCanvas&&e instanceof OffscreenCanvas?e.convertToBlob({type:n,quality:i}).then(function(e){try{return(s=e).name=t,s.lastModified=r,$If_4.call(this)}catch(e){return o(e)}}.bind(this),o):getFilefromDataUrl(e.toDataURL(n,i),t,r).then(function(e){try{return s=e,$If_4.call(this)}catch(e){return o(e)}}.bind(this),o);function $If_4(){return a(s)}})}function getExifOrientation(e){return new Promise(function(n,t){var r=new FileReader;r.onload=function(e){var t=new DataView(e.target.result);if(65496!=t.getUint16(0,!1))return n(-2);for(var r=t.byteLength,i=2;ii||e.height>i);return a?e.width>e.height?(n.width=i,n.height=e.height/e.width*i):(n.width=e.width/e.height*i,n.height=i):(n.width=e.width,n.height=e.height),r.drawImage(e,0,0,n.width,n.height),[n,a]}function followExifOrientation(e,n,t){var r=n.getContext("2d"),i=n.width,a=n.height;switch(4a?(s.width*=.9,s.height*=.9,s.getContext("2d").drawImage(o,0,0,s.width,s.height),canvasToFile(s,e.type,e.name,e.lastModified,m).then(function(e){try{return h=e,$Loop_4}catch(e){return r(e)}},r)):[1]},l=function $Loop_4_exit(){return c.call(this)};return(f=function(e){for(;e;){if(e.then)return void e.then(f,r);try{if(e.pop){if(e.length)return e.pop()?l.call(this):e;e=u}else e=e.call(this)}catch(e){return r(e)}}}.bind(this))(u)}var g,d=function $Loop_6(){return i--&&h.size>a?(s.width*=.9,s.height*=.9,s.getContext("2d").drawImage(o,0,0,s.width,s.height),m*=.9,canvasToFile(s,e.type,e.name,e.lastModified,m).then(function(e){try{return h=e,$Loop_6}catch(e){return r(e)}},r)):[1]},p=function $Loop_6_exit(){return c.call(this)};return(g=function(e){for(;e;){if(e.then)return void e.then(g,r);try{if(e.pop){if(e.length)return e.pop()?p.call(this):e;e=d}else e=e.call(this)}catch(e){return r(e)}}}.bind(this))(d)}catch(e){return r(e)}}.bind(this),r)}catch(e){return r(e)}}.bind(this),r)}catch(e){return r(e)}}.bind(this),r)})}var e,n=0;var t=function createWorker(e){return new Worker(URL.createObjectURL(new Blob(["(".concat(e,")()")])))}(function(){self.addEventListener("message",function(e){return new Promise(function(n,t){var r,i,a,o,s=e.data;r=s.file,i=s.id,a=s.imageCompressionLibUrl,o=s.options;var c=function $Try_1_Post(){try{return n()}catch(e){return t(e)}},f=function $Try_1_Catch(e){try{return self.postMessage({error:e.message,id:i}),c()}catch(e){return t(e)}};try{var u;return importScripts(a),imageCompression(r,o).then(function(e){try{return u=e,self.postMessage({file:u,id:i}),c()}catch(e){return f(e)}},f)}catch(e){f(e)}})})});function compressOnWebWorker(r,i){return new Promise(function(a,o){return new Promise(function(s,c){e||(e=function createSourceObject(e){return URL.createObjectURL(new Blob([e],{type:"application/javascript"}))}("\n    function imageCompression (){return (".concat(imageCompression,").apply(null, arguments)}\n    \n    imageCompression.getDataUrlFromFile = ").concat(imageCompression.getDataUrlFromFile,"\n    imageCompression.getFilefromDataUrl = ").concat(imageCompression.getFilefromDataUrl,"\n    imageCompression.loadImage = ").concat(imageCompression.loadImage,"\n    imageCompression.drawImageInCanvas = ").concat(imageCompression.drawImageInCanvas,"\n    imageCompression.drawFileInCanvas = ").concat(imageCompression.drawFileInCanvas,"\n    imageCompression.canvasToFile = ").concat(imageCompression.canvasToFile,"\n    imageCompression.getExifOrientation = ").concat(imageCompression.getExifOrientation,"\n    imageCompression.handleMaxWidthOrHeight = ").concat(imageCompression.handleMaxWidthOrHeight,"\n    imageCompression.followExifOrientation = ").concat(imageCompression.followExifOrientation,"\n    \n    getDataUrlFromFile = imageCompression.getDataUrlFromFile\n    getFilefromDataUrl = imageCompression.getFilefromDataUrl\n    loadImage = imageCompression.loadImage\n    drawImageInCanvas = imageCompression.drawImageInCanvas\n    drawFileInCanvas = imageCompression.drawFileInCanvas\n    canvasToFile = imageCompression.canvasToFile\n    getExifOrientation = imageCompression.getExifOrientation\n    handleMaxWidthOrHeight = imageCompression.handleMaxWidthOrHeight\n    followExifOrientation = imageCompression.followExifOrientation\n\n    function compress (){return (").concat(compress,").apply(null, arguments)}\n    ")));var f=n++;return t.addEventListener("message",function handler(e){e.data.id===f&&(t.removeEventListener("message",handler),e.data.error&&o(e.data.error),a(e.data.file))}),t.postMessage({file:r,id:f,imageCompressionLibUrl:e,options:i}),s()})})}function imageCompression(e,n){return new Promise(function(t,r){var i,a;if(n.maxSizeMB=n.maxSizeMB||Number.POSITIVE_INFINITY,n.useWebWorker="boolean"!=typeof n.useWebWorker||n.useWebWorker,!(e instanceof Blob||e instanceof File))return r(new Error("The file given is not an instance of Blob or File"));if(!/^image/.test(e.type))return r(new Error("The file given is not an image"));if(a="undefined"!=typeof WorkerGlobalScope&&self instanceof WorkerGlobalScope,!n.useWebWorker||"function"!=typeof Worker||a)return compress(e,n).then(function(e){try{return i=e,$If_3.call(this)}catch(e){return r(e)}}.bind(this),r);var o=function(){try{return $If_3.call(this)}catch(e){return r(e)}}.bind(this),s=function $Try_1_Catch(t){try{return compress(e,n).then(function(e){try{return i=e,o()}catch(e){return r(e)}},r)}catch(e){return r(e)}};try{return compressOnWebWorker(e,n).then(function(e){try{return i=e,o()}catch(e){return s()}},s)}catch(e){s()}function $If_3(){try{i.name=e.name,i.lastModified=e.lastModified}catch(e){}return t(i)}})}return imageCompression.getDataUrlFromFile=getDataUrlFromFile,imageCompression.getFilefromDataUrl=getFilefromDataUrl,imageCompression.loadImage=loadImage,imageCompression.drawImageInCanvas=drawImageInCanvas,imageCompression.drawFileInCanvas=drawFileInCanvas,imageCompression.canvasToFile=canvasToFile,imageCompression.getExifOrientation=getExifOrientation,imageCompression.handleMaxWidthOrHeight=handleMaxWidthOrHeight,imageCompression.followExifOrientation=followExifOrientation,imageCompression});
 //# sourceMappingURL=browser-image-compression.js.map
diff --git a/dist/browser-image-compression.js.map b/dist/browser-image-compression.js.map
index ebf4c18..51eab58 100644
--- a/dist/browser-image-compression.js.map
+++ b/dist/browser-image-compression.js.map
@@ -1 +1 @@
-{"version":3,"file":"browser-image-compression.js","sources":["../lib/utils.js","../lib/image-compression.js","../lib/web-worker.js","../lib/index.js"],"sourcesContent":["/**\n * getDataUrlFromFile\n *\n * @param {File} file\n * @returns {Promise}\n */\nexport function getDataUrlFromFile (file) {\n  return new Promise((resolve, reject) => {\n    const reader = new FileReader()\n    reader.onload = () => resolve(reader.result)\n    reader.onerror = (e) => reject(e)\n    reader.readAsDataURL(file)\n  })\n}\n\n/**\n * getFilefromDataUrl\n *\n * @param {string} dataurl\n * @param {string} filename\n * @param {number} [lastModified=Date.now()]\n * @returns {Promise}\n */\nexport function getFilefromDataUrl (dataurl, filename, lastModified = Date.now()) {\n  return new Promise((resolve) => {\n    const arr = dataurl.split(',')\n    const mime = arr[0].match(/:(.*?);/)[1]\n    const bstr = atob(arr[1])\n    let n = bstr.length\n    const u8arr = new Uint8Array(n)\n    while (n--) {\n      u8arr[n] = bstr.charCodeAt(n)\n    }\n    let file\n    try {\n      file = new File([u8arr], filename, { type: mime }) // Edge do not support File constructor\n    } catch (e) {\n      file = new Blob([u8arr], { type: mime })\n      file.name = filename\n      file.lastModified = lastModified\n    }\n    resolve(file)\n  })\n}\n\n/**\n * loadImage\n *\n * @param {string} src\n * @returns {Promise}\n */\nexport function loadImage (src) {\n  return new Promise((resolve, reject) => {\n    const img = new Image()\n    img.onload = () => resolve(img)\n    img.onerror = (e) => reject(e)\n    img.src = src\n  })\n}\n\n/**\n * drawImageInCanvas\n *\n * @param {HTMLImageElement} img\n * @returns {HTMLCanvasElement}\n */\nexport function drawImageInCanvas (img) {\n  let canvas\n  if (typeof OffscreenCanvas === 'function') {\n    canvas = new OffscreenCanvas(img.width, img.height)\n  } else {\n    canvas = document.createElement('canvas')\n  }\n  const ctx = canvas.getContext('2d')\n  ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n  return canvas\n}\n\n/**\n * drawFileInCanvas\n *\n * @param {File} file\n * @returns {Promise<[ImageBitmap | HTMLImageElement, HTMLCanvasElement]>}\n */\nexport async function drawFileInCanvas (file) {\n  let img\n  try {\n    img = await createImageBitmap(file)\n  } catch (e) {\n    const dataUrl = await getDataUrlFromFile(file)\n    img = await loadImage(dataUrl)\n  }\n  const canvas = drawImageInCanvas(img)\n  return [img, canvas]\n}\n\n/**\n * canvasToFile\n *\n * @param canvas\n * @param {string} fileType\n * @param {string} fileName\n * @param {number} fileLastModified\n * @param {number} [quality]\n * @returns {Promise}\n */\nexport async function canvasToFile (canvas, fileType, fileName, fileLastModified, quality = 1) {\n  let compressedFile\n  if (typeof OffscreenCanvas === 'function' && canvas instanceof OffscreenCanvas) {\n    compressedFile = await canvas.convertToBlob({ type: fileType, quality })\n    compressedFile.name = fileName\n    compressedFile.lastModified = fileLastModified\n  } else {\n    const dataUrl = canvas.toDataURL(fileType, quality)\n    compressedFile = await getFilefromDataUrl(dataUrl, fileName, fileLastModified)\n  }\n  return compressedFile\n}\n\n/**\n * getExifOrientation\n * get image exif orientation info\n * source: https://stackoverflow.com/a/32490603/10395024\n *\n * @param {File} file\n * @returns {Promise} - orientation id, see https://i.stack.imgur.com/VGsAj.gif\n */\nexport function getExifOrientation (file) {\n  return new Promise((resolve, reject) => {\n    const reader = new FileReader()\n    reader.onload = (e) => {\n      const view = new DataView(e.target.result)\n      if (view.getUint16(0, false) != 0xFFD8) {\n        return resolve(-2)\n      }\n      const length = view.byteLength\n      let offset = 2\n      while (offset < length) {\n        if (view.getUint16(offset + 2, false) <= 8) return resolve(-1)\n        const marker = view.getUint16(offset, false)\n        offset += 2\n        if (marker == 0xFFE1) {\n          if (view.getUint32(offset += 2, false) != 0x45786966) {\n            return resolve(-1)\n          }\n\n          var little = view.getUint16(offset += 6, false) == 0x4949\n          offset += view.getUint32(offset + 4, little)\n          var tags = view.getUint16(offset, little)\n          offset += 2\n          for (var i = 0; i < tags; i++) {\n            if (view.getUint16(offset + (i * 12), little) == 0x0112) {\n              return resolve(view.getUint16(offset + (i * 12) + 8, little))\n            }\n          }\n        } else if ((marker & 0xFF00) != 0xFF00) {\n          break\n        } else {\n          offset += view.getUint16(offset, false)\n        }\n      }\n      return resolve(-1)\n    }\n    reader.onerror = (e) => reject(e)\n    reader.readAsArrayBuffer(file)\n  })\n}\n\n/**\n *\n * @param img\n * @param canvas\n * @param options\n * @returns {Promise<[HTMLCanvasElement, boolean]>}\n */\nexport function handleMaxWidthOrHeight (img, canvas, options) {\n  const ctx = canvas.getContext('2d')\n\n  const maxWidthOrHeight = options.maxWidthOrHeight\n  const needToHandle = Number.isInteger(maxWidthOrHeight) && (img.width > maxWidthOrHeight || img.height > maxWidthOrHeight)\n  if (needToHandle) {\n    if (img.width > img.height) {\n      canvas.width = maxWidthOrHeight\n      canvas.height = (img.height / img.width) * maxWidthOrHeight\n    } else {\n      canvas.width = (img.width / img.height) * maxWidthOrHeight\n      canvas.height = maxWidthOrHeight\n    }\n  } else {\n    canvas.width = img.width\n    canvas.height = img.height\n  }\n\n  ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n  return [canvas, needToHandle]\n}\n\n/**\n * followExifOrientation\n * source: https://stackoverflow.com/a/40867559/10395024\n *\n * @param {HTMLImageElement} img\n * @param {HTMLCanvasElement} canvas\n * @param {number} exifOrientation\n * @returns {HTMLCanvasElement} canvas\n */\nexport function followExifOrientation (img, canvas, exifOrientation) {\n  const ctx = canvas.getContext('2d')\n\n  const width = img.width\n  const height = img.height\n\n  // set proper canvas dimensions before transform & export\n  if (4 < exifOrientation && exifOrientation < 9) {\n    canvas.width = height\n    canvas.height = width\n  } else {\n    canvas.width = width\n    canvas.height = height\n  }\n\n  // transform context before drawing image\n  switch (exifOrientation) {\n    case 2: ctx.transform(-1, 0, 0, 1, width, 0); break;\n    case 3: ctx.transform(-1, 0, 0, -1, width, height); break;\n    case 4: ctx.transform(1, 0, 0, -1, 0, height); break;\n    case 5: ctx.transform(0, 1, 1, 0, 0, 0); break;\n    case 6: ctx.transform(0, 1, -1, 0, height, 0); break;\n    case 7: ctx.transform(0, -1, -1, 0, height, width); break;\n    case 8: ctx.transform(0, -1, 1, 0, 0, width); break;\n    default: break;\n  }\n\n  ctx.drawImage(img, 0, 0)\n\n  return canvas\n}","import { canvasToFile, drawFileInCanvas, followExifOrientation, getExifOrientation, handleMaxWidthOrHeight } from './utils'\n\n/**\n * Compress an image file.\n *\n * @param {File} file\n * @param {Object} options - { maxSizeMB=Number.POSITIVE_INFINITY, maxWidthOrHeight, useWebWorker=true, maxIteration = 10, exifOrientation }\n * @param {number} [options.maxSizeMB=Number.POSITIVE_INFINITY]\n * @param {number} [options.maxWidthOrHeight=undefined] * @param {number} [options.maxWidthOrHeight=undefined]\n * @param {number} [options.maxIteration=10]\n * @param {number} [options.exifOrientation=] - default to be the exif orientation from the image file\n * @returns {Promise}\n */\nexport default async function compress (file, options) {\n  let remainingTrials = options.maxIteration || 10\n\n  const maxSizeByte = options.maxSizeMB * 1024 * 1024\n\n  // no need to compress or resize\n  if (file.size <= maxSizeByte && typeof options.maxWidthOrHeight === 'undefined') {\n    return file\n  }\n\n  let img, canvas, isResized\n\n  // drawFileInCanvas\n  let temp = await drawFileInCanvas(file)\n  img = temp[0]\n  canvas = temp[1]\n\n  // handleMaxWidthOrHeight\n  let temp2 = handleMaxWidthOrHeight(img, canvas, options)\n  canvas = temp2[0]\n  isResized = temp2[1]\n  // no need to compress or resize\n  if (file.size <= maxSizeByte && !isResized) {\n    return file\n  }\n\n  // exifOrientation\n  options.exifOrientation = options.exifOrientation || await getExifOrientation(file)\n  canvas = followExifOrientation(img, canvas, options.exifOrientation)\n\n  let quality = 1\n  let compressedFile = await canvasToFile(canvas, file.type, file.name, file.lastModified, quality)\n  if (file.type === 'image/png') {\n    while (remainingTrials-- && compressedFile.size > maxSizeByte) {\n      canvas.width *= 0.9\n      canvas.height *= 0.9\n\n      const ctx = canvas.getContext('2d')\n      ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n\n      compressedFile = await canvasToFile(canvas, file.type, file.name, file.lastModified, quality)\n    }\n  } else { // if (file.type === 'image/jpeg') {\n    while (remainingTrials-- && compressedFile.size > maxSizeByte) {\n      canvas.width *= 0.9\n      canvas.height *= 0.9\n\n      const ctx = canvas.getContext('2d')\n      ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n\n      quality *= 0.9\n      compressedFile = await canvasToFile(canvas, file.type, file.name, file.lastModified, quality)\n    }\n  }\n\n  return compressedFile\n}","import imageCompression from './index'\nimport compress from './image-compression'\n\nlet cnt = 0\nlet imageCompressionLibUrl\n\nfunction createWorker (f) {\n  return new Worker(URL.createObjectURL(new Blob([`(${f})()`])))\n}\n\nconst worker = createWorker(() => {\n  self.addEventListener('message', async (e) => {\n    const { file, id, imageCompressionLibUrl, options } = e.data\n    try {\n      // console.log('[worker] importScripts', imageCompressionLibUrl)\n      importScripts(imageCompressionLibUrl)\n      // console.log('[worker] self', self)\n      const compressedFile = await imageCompression(file, options)\n      self.postMessage({ file: compressedFile, id })\n    } catch (e) {\n      // console.error('[worker] error', e)\n      self.postMessage({ error: e.message, id })\n    }\n  })\n})\n\nfunction createSourceObject (str) {\n  return URL.createObjectURL(new Blob([str], { type: 'application/javascript' }))\n}\n\nexport function compressOnWebWorker (file, options) {\n  return new Promise(async (resolve, reject) => {\n    if (!imageCompressionLibUrl) {\n      imageCompressionLibUrl = createSourceObject(`\n    function imageCompression (){return (${imageCompression}).apply(null, arguments)}\n    \n    imageCompression.getDataUrlFromFile = ${imageCompression.getDataUrlFromFile}\n    imageCompression.getFilefromDataUrl = ${imageCompression.getFilefromDataUrl}\n    imageCompression.loadImage = ${imageCompression.loadImage}\n    imageCompression.drawImageInCanvas = ${imageCompression.drawImageInCanvas}\n    imageCompression.drawFileInCanvas = ${imageCompression.drawFileInCanvas}\n    imageCompression.canvasToFile = ${imageCompression.canvasToFile}\n    imageCompression.getExifOrientation = ${imageCompression.getExifOrientation}\n    imageCompression.handleMaxWidthOrHeight = ${imageCompression.handleMaxWidthOrHeight}\n    imageCompression.followExifOrientation = ${imageCompression.followExifOrientation}\n    \n    getDataUrlFromFile = imageCompression.getDataUrlFromFile\n    getFilefromDataUrl = imageCompression.getFilefromDataUrl\n    loadImage = imageCompression.loadImage\n    drawImageInCanvas = imageCompression.drawImageInCanvas\n    drawFileInCanvas = imageCompression.drawFileInCanvas\n    canvasToFile = imageCompression.canvasToFile\n    getExifOrientation = imageCompression.getExifOrientation\n    handleMaxWidthOrHeight = imageCompression.handleMaxWidthOrHeight\n    followExifOrientation = imageCompression.followExifOrientation\n\n    function compress (){return (${compress}).apply(null, arguments)}\n    `)\n      // imageCompressionLibUrl = new URL('../dist/browser-image-compression.js', window.location.href).href\n    }\n    let id = cnt++\n\n    function handler (e) {\n      if (e.data.id === id) {\n        worker.removeEventListener('message', handler)\n        if (e.data.error) {\n          reject(e.data.error)\n        }\n        resolve(e.data.file)\n      }\n    }\n\n    worker.addEventListener('message', handler)\n    worker.postMessage({ file, id, imageCompressionLibUrl, options })\n  })\n}","import compress from './image-compression'\nimport {\n  canvasToFile,\n  drawFileInCanvas,\n  drawImageInCanvas,\n  getDataUrlFromFile,\n  getFilefromDataUrl,\n  loadImage,\n  getExifOrientation,\n  handleMaxWidthOrHeight,\n  followExifOrientation\n} from './utils.js'\nimport { compressOnWebWorker } from './web-worker'\n\n/**\n * Compress an image file.\n *\n * @param {File} file\n * @param {Object} options - { maxSizeMB=Number.POSITIVE_INFINITY, maxWidthOrHeight, useWebWorker=true, maxIteration = 10, exifOrientation }\n * @param {number} [options.maxSizeMB=Number.POSITIVE_INFINITY]\n * @param {number} [options.maxWidthOrHeight=undefined] * @param {number} [options.maxWidthOrHeight=undefined]\n * @param {boolean} [options.useWebWorker=true]\n * @param {number} [options.maxIteration=10]\n * @param {number} [options.exifOrientation=] - default to be the exif orientation from the image file\n * @returns {Promise}\n */\nasync function imageCompression (file, options) {\n\n  let compressedFile\n\n  options.maxSizeMB = options.maxSizeMB || Number.POSITIVE_INFINITY\n  options.useWebWorker = typeof options.useWebWorker === 'boolean' ? options.useWebWorker : true\n\n  if (!(file instanceof Blob || file instanceof File)) {\n    throw new Error('The file given is not an instance of Blob or File')\n  } else if (!/^image/.test(file.type)) {\n    throw new Error('The file given is not an image')\n  }\n\n  // try run in web worker, fall back to run in main thread\n  const inWebWorker = typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope\n\n  // if (inWebWorker) {\n  //   console.log('run compression in web worker')\n  // } else {\n  //   console.log('run compression in main thread')\n  // }\n\n  if (options.useWebWorker && typeof Worker === 'function' && !inWebWorker) {\n    try {\n      // \"compressOnWebWorker\" is kind of like a recursion to call \"imageCompression\" again inside web worker\n      compressedFile = await compressOnWebWorker(file, options)\n    } catch (e) {\n      // console.error('run compression in web worker failed', e)\n      compressedFile = await compress(file, options)\n    }\n  } else {\n    compressedFile = await compress(file, options)\n  }\n\n  try {\n    compressedFile.name = file.name\n    compressedFile.lastModified = file.lastModified\n  } catch (e) {}\n\n  return compressedFile\n}\n\nimageCompression.getDataUrlFromFile = getDataUrlFromFile\nimageCompression.getFilefromDataUrl = getFilefromDataUrl\nimageCompression.loadImage = loadImage\nimageCompression.drawImageInCanvas = drawImageInCanvas\nimageCompression.drawFileInCanvas = drawFileInCanvas\nimageCompression.canvasToFile = canvasToFile\nimageCompression.getExifOrientation = getExifOrientation\nimageCompression.handleMaxWidthOrHeight = handleMaxWidthOrHeight\nimageCompression.followExifOrientation = followExifOrientation\n\nexport default imageCompression\n"],"names":["reader","onerror","e","Promise","dataurl","split","bstr","length","filename","Blob","resolve","loadImage","quality","$return","$error","type","fileName","offset","view","getUint32","getUint16","little","file","maxWidthOrHeight","options","needToHandle","img","canvas","ctx","width","transform","compress","maxIteration","then","$await_9","name","cnt","imageCompression","getDataUrlFromFile","drawImageInCanvas","getExifOrientation","getFilefromDataUrl","drawFileInCanvas","canvasToFile","handleMaxWidthOrHeight","followExifOrientation"],"mappings":"mUAwBEA,EAAAC,QAAO,SAAAC,qJAYH,IAAAC,gCACAC,EAAAC,qDACAC,EAAKC,wEAaqBC,wBAE5B,IAAAC,yBACAD,mBAGJE,gBAgBcC,2zBAiCP,mCAA2EC,kEAA3E,IAAAT,QAAA,SAAAU,EAAAC,iGAEDC,yDAC4BC,2lBAsBFC,YACtBC,EAAAC,YAA4B,6DAI5BD,EAAAE,iBAAAC,uEAMAH,EAAAE,8DAMWlB,wBACXoB,qEAcNC,EAAiBC,mBACjBC,kKAkBSC,6CAIPC,kEA2BAC,qBAEFC,sCAOFF,EAAAE,qDAGiDD,EAAAE,6EACvCF,EAAAE,UAAc,EAAG,EAAG,uBAAaF,EAAAE,2EACjCF,EAAAE,UAAc,4BAAyBF,EAAAE,6DCvMnCC,8EAGFP,EAAAQ,+SAUmBC,KAAA,SAAAC,gBAAAA,8eAULC,w5BC/C5B,MAAIC,UAIJ,uYAaMlC,ukBAyCgBmC,iBAAAC,6OAGVD,iBAAAE,+OAGJF,iBAAAG,+gECNWL,0HAMnBE,iBAAAI,mBAAsCA,mBACtCJ,iBAAA1B,oBACA0B,iBAAAE,oCACAF,iBAAAK,iBAAAA,iBACAL,iBAAAM,0BACAN,iBAAAG,sCACAH,iBAAAO,8CACAP,iBAAAQ,sBAAAA"}
\ No newline at end of file
+{"version":3,"file":"browser-image-compression.js","sources":["../lib/utils.js","../lib/image-compression.js","../lib/web-worker.js","../lib/index.js"],"sourcesContent":["/**\n * getDataUrlFromFile\n *\n * @param {File} file\n * @returns {Promise}\n */\nexport function getDataUrlFromFile (file) {\n  return new Promise((resolve, reject) => {\n    const reader = new FileReader()\n    reader.onload = () => resolve(reader.result)\n    reader.onerror = (e) => reject(e)\n    reader.readAsDataURL(file)\n  })\n}\n\n/**\n * getFilefromDataUrl\n *\n * @param {string} dataurl\n * @param {string} filename\n * @param {number} [lastModified=Date.now()]\n * @returns {Promise}\n */\nexport function getFilefromDataUrl (dataurl, filename, lastModified = Date.now()) {\n  return new Promise((resolve) => {\n    const arr = dataurl.split(',')\n    const mime = arr[0].match(/:(.*?);/)[1]\n    const bstr = atob(arr[1])\n    let n = bstr.length\n    const u8arr = new Uint8Array(n)\n    while (n--) {\n      u8arr[n] = bstr.charCodeAt(n)\n    }\n    let file\n    try {\n      file = new File([u8arr], filename, { type: mime }) // Edge do not support File constructor\n    } catch (e) {\n      file = new Blob([u8arr], { type: mime })\n      file.name = filename\n      file.lastModified = lastModified\n    }\n    resolve(file)\n  })\n}\n\n/**\n * loadImage\n *\n * @param {string} src\n * @returns {Promise}\n */\nexport function loadImage (src) {\n  return new Promise((resolve, reject) => {\n    const img = new Image()\n    img.onload = () => resolve(img)\n    img.onerror = (e) => reject(e)\n    img.src = src\n  })\n}\n\n/**\n * drawImageInCanvas\n *\n * @param {HTMLImageElement} img\n * @returns {HTMLCanvasElement}\n */\nexport function drawImageInCanvas (img) {\n  let canvas\n  if (typeof OffscreenCanvas === 'function') {\n    canvas = new OffscreenCanvas(img.width, img.height)\n  } else {\n    canvas = document.createElement('canvas')\n  }\n  const ctx = canvas.getContext('2d')\n  ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n  return canvas\n}\n\n/**\n * drawFileInCanvas\n *\n * @param {File} file\n * @returns {Promise<[ImageBitmap | HTMLImageElement, HTMLCanvasElement]>}\n */\nexport async function drawFileInCanvas (file) {\n  let img\n  try {\n    img = await createImageBitmap(file)\n  } catch (e) {\n    const dataUrl = await getDataUrlFromFile(file)\n    img = await loadImage(dataUrl)\n  }\n  const canvas = drawImageInCanvas(img)\n  return [img, canvas]\n}\n\n/**\n * canvasToFile\n *\n * @param canvas\n * @param {string} fileType\n * @param {string} fileName\n * @param {number} fileLastModified\n * @param {number} [quality]\n * @returns {Promise}\n */\nexport async function canvasToFile (canvas, fileType, fileName, fileLastModified, quality = 1) {\n  let compressedFile\n  if (typeof OffscreenCanvas === 'function' && canvas instanceof OffscreenCanvas) {\n    compressedFile = await canvas.convertToBlob({ type: fileType, quality })\n    compressedFile.name = fileName\n    compressedFile.lastModified = fileLastModified\n  } else {\n    const dataUrl = canvas.toDataURL(fileType, quality)\n    compressedFile = await getFilefromDataUrl(dataUrl, fileName, fileLastModified)\n  }\n  return compressedFile\n}\n\n/**\n * getExifOrientation\n * get image exif orientation info\n * source: https://stackoverflow.com/a/32490603/10395024\n *\n * @param {File} file\n * @returns {Promise} - orientation id, see https://i.stack.imgur.com/VGsAj.gif\n */\nexport function getExifOrientation (file) {\n  return new Promise((resolve, reject) => {\n    const reader = new FileReader()\n    reader.onload = (e) => {\n      const view = new DataView(e.target.result)\n      if (view.getUint16(0, false) != 0xFFD8) {\n        return resolve(-2)\n      }\n      const length = view.byteLength\n      let offset = 2\n      while (offset < length) {\n        if (view.getUint16(offset + 2, false) <= 8) return resolve(-1)\n        const marker = view.getUint16(offset, false)\n        offset += 2\n        if (marker == 0xFFE1) {\n          if (view.getUint32(offset += 2, false) != 0x45786966) {\n            return resolve(-1)\n          }\n\n          var little = view.getUint16(offset += 6, false) == 0x4949\n          offset += view.getUint32(offset + 4, little)\n          var tags = view.getUint16(offset, little)\n          offset += 2\n          for (var i = 0; i < tags; i++) {\n            if (view.getUint16(offset + (i * 12), little) == 0x0112) {\n              return resolve(view.getUint16(offset + (i * 12) + 8, little))\n            }\n          }\n        } else if ((marker & 0xFF00) != 0xFF00) {\n          break\n        } else {\n          offset += view.getUint16(offset, false)\n        }\n      }\n      return resolve(-1)\n    }\n    reader.onerror = (e) => reject(e)\n    reader.readAsArrayBuffer(file)\n  })\n}\n\n/**\n *\n * @param img\n * @param canvas\n * @param options\n * @returns {Promise<[HTMLCanvasElement, boolean]>}\n */\nexport function handleMaxWidthOrHeight (img, canvas, options) {\n  const ctx = canvas.getContext('2d')\n\n  const maxWidthOrHeight = options.maxWidthOrHeight\n  const needToHandle = Number.isInteger(maxWidthOrHeight) && (img.width > maxWidthOrHeight || img.height > maxWidthOrHeight)\n  if (needToHandle) {\n    if (img.width > img.height) {\n      canvas.width = maxWidthOrHeight\n      canvas.height = (img.height / img.width) * maxWidthOrHeight\n    } else {\n      canvas.width = (img.width / img.height) * maxWidthOrHeight\n      canvas.height = maxWidthOrHeight\n    }\n  } else {\n    canvas.width = img.width\n    canvas.height = img.height\n  }\n\n  ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n  return [canvas, needToHandle]\n}\n\n/**\n * followExifOrientation\n * source: https://stackoverflow.com/a/40867559/10395024\n *\n * @param {HTMLImageElement} img\n * @param {HTMLCanvasElement} canvas\n * @param {number} exifOrientation\n * @returns {HTMLCanvasElement} canvas\n */\nexport function followExifOrientation (img, canvas, exifOrientation) {\n  const ctx = canvas.getContext('2d')\n\n  const width = canvas.width\n  const height = canvas.height\n\n  // set proper canvas dimensions before transform & export\n  if (4 < exifOrientation && exifOrientation < 9) {\n    canvas.width = height\n    canvas.height = width\n  } else {\n    canvas.width = width\n    canvas.height = height\n  }\n\n  // transform context before drawing image\n  switch (exifOrientation) {\n    case 2: ctx.transform(-1, 0, 0, 1, width, 0); break;\n    case 3: ctx.transform(-1, 0, 0, -1, width, height); break;\n    case 4: ctx.transform(1, 0, 0, -1, 0, height); break;\n    case 5: ctx.transform(0, 1, 1, 0, 0, 0); break;\n    case 6: ctx.transform(0, 1, -1, 0, height, 0); break;\n    case 7: ctx.transform(0, -1, -1, 0, height, width); break;\n    case 8: ctx.transform(0, -1, 1, 0, 0, width); break;\n    default: break;\n  }\n\n  ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n\n  return canvas\n}","import { canvasToFile, drawFileInCanvas, followExifOrientation, getExifOrientation, handleMaxWidthOrHeight } from './utils'\n\n/**\n * Compress an image file.\n *\n * @param {File} file\n * @param {Object} options - { maxSizeMB=Number.POSITIVE_INFINITY, maxWidthOrHeight, useWebWorker=true, maxIteration = 10, exifOrientation }\n * @param {number} [options.maxSizeMB=Number.POSITIVE_INFINITY]\n * @param {number} [options.maxWidthOrHeight=undefined] * @param {number} [options.maxWidthOrHeight=undefined]\n * @param {number} [options.maxIteration=10]\n * @param {number} [options.exifOrientation=] - default to be the exif orientation from the image file\n * @returns {Promise}\n */\nexport default async function compress (file, options) {\n  let remainingTrials = options.maxIteration || 10\n\n  const maxSizeByte = options.maxSizeMB * 1024 * 1024\n\n  // no need to compress or resize\n  if (file.size <= maxSizeByte && typeof options.maxWidthOrHeight === 'undefined') {\n    return file\n  }\n\n  let img, canvas, isResized\n\n  // drawFileInCanvas\n  let temp = await drawFileInCanvas(file)\n  img = temp[0]\n  canvas = temp[1]\n\n  // handleMaxWidthOrHeight\n  let temp2 = handleMaxWidthOrHeight(img, canvas, options)\n  canvas = temp2[0]\n  isResized = temp2[1]\n  // no need to compress or resize\n  if (file.size <= maxSizeByte && !isResized) {\n    return file\n  }\n\n  // exifOrientation\n  options.exifOrientation = options.exifOrientation || await getExifOrientation(file)\n  canvas = followExifOrientation(img, canvas, options.exifOrientation)\n\n  let quality = 1\n  let compressedFile = await canvasToFile(canvas, file.type, file.name, file.lastModified, quality)\n  if (file.type === 'image/png') {\n    while (remainingTrials-- && compressedFile.size > maxSizeByte) {\n      canvas.width *= 0.9\n      canvas.height *= 0.9\n\n      const ctx = canvas.getContext('2d')\n      ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n\n      compressedFile = await canvasToFile(canvas, file.type, file.name, file.lastModified, quality)\n    }\n  } else { // if (file.type === 'image/jpeg') {\n    while (remainingTrials-- && compressedFile.size > maxSizeByte) {\n      canvas.width *= 0.9\n      canvas.height *= 0.9\n\n      const ctx = canvas.getContext('2d')\n      ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n\n      quality *= 0.9\n      compressedFile = await canvasToFile(canvas, file.type, file.name, file.lastModified, quality)\n    }\n  }\n\n  return compressedFile\n}","import imageCompression from './index'\nimport compress from './image-compression'\n\nlet cnt = 0\nlet imageCompressionLibUrl\n\nfunction createWorker (f) {\n  return new Worker(URL.createObjectURL(new Blob([`(${f})()`])))\n}\n\nconst worker = createWorker(() => {\n  self.addEventListener('message', async (e) => {\n    const { file, id, imageCompressionLibUrl, options } = e.data\n    try {\n      // console.log('[worker] importScripts', imageCompressionLibUrl)\n      importScripts(imageCompressionLibUrl)\n      // console.log('[worker] self', self)\n      const compressedFile = await imageCompression(file, options)\n      self.postMessage({ file: compressedFile, id })\n    } catch (e) {\n      // console.error('[worker] error', e)\n      self.postMessage({ error: e.message, id })\n    }\n  })\n})\n\nfunction createSourceObject (str) {\n  return URL.createObjectURL(new Blob([str], { type: 'application/javascript' }))\n}\n\nexport function compressOnWebWorker (file, options) {\n  return new Promise(async (resolve, reject) => {\n    if (!imageCompressionLibUrl) {\n      imageCompressionLibUrl = createSourceObject(`\n    function imageCompression (){return (${imageCompression}).apply(null, arguments)}\n    \n    imageCompression.getDataUrlFromFile = ${imageCompression.getDataUrlFromFile}\n    imageCompression.getFilefromDataUrl = ${imageCompression.getFilefromDataUrl}\n    imageCompression.loadImage = ${imageCompression.loadImage}\n    imageCompression.drawImageInCanvas = ${imageCompression.drawImageInCanvas}\n    imageCompression.drawFileInCanvas = ${imageCompression.drawFileInCanvas}\n    imageCompression.canvasToFile = ${imageCompression.canvasToFile}\n    imageCompression.getExifOrientation = ${imageCompression.getExifOrientation}\n    imageCompression.handleMaxWidthOrHeight = ${imageCompression.handleMaxWidthOrHeight}\n    imageCompression.followExifOrientation = ${imageCompression.followExifOrientation}\n    \n    getDataUrlFromFile = imageCompression.getDataUrlFromFile\n    getFilefromDataUrl = imageCompression.getFilefromDataUrl\n    loadImage = imageCompression.loadImage\n    drawImageInCanvas = imageCompression.drawImageInCanvas\n    drawFileInCanvas = imageCompression.drawFileInCanvas\n    canvasToFile = imageCompression.canvasToFile\n    getExifOrientation = imageCompression.getExifOrientation\n    handleMaxWidthOrHeight = imageCompression.handleMaxWidthOrHeight\n    followExifOrientation = imageCompression.followExifOrientation\n\n    function compress (){return (${compress}).apply(null, arguments)}\n    `)\n      // imageCompressionLibUrl = new URL('../dist/browser-image-compression.js', window.location.href).href\n    }\n    let id = cnt++\n\n    function handler (e) {\n      if (e.data.id === id) {\n        worker.removeEventListener('message', handler)\n        if (e.data.error) {\n          reject(e.data.error)\n        }\n        resolve(e.data.file)\n      }\n    }\n\n    worker.addEventListener('message', handler)\n    worker.postMessage({ file, id, imageCompressionLibUrl, options })\n  })\n}","import compress from './image-compression'\nimport {\n  canvasToFile,\n  drawFileInCanvas,\n  drawImageInCanvas,\n  getDataUrlFromFile,\n  getFilefromDataUrl,\n  loadImage,\n  getExifOrientation,\n  handleMaxWidthOrHeight,\n  followExifOrientation\n} from './utils.js'\nimport { compressOnWebWorker } from './web-worker'\n\n/**\n * Compress an image file.\n *\n * @param {File} file\n * @param {Object} options - { maxSizeMB=Number.POSITIVE_INFINITY, maxWidthOrHeight, useWebWorker=true, maxIteration = 10, exifOrientation }\n * @param {number} [options.maxSizeMB=Number.POSITIVE_INFINITY]\n * @param {number} [options.maxWidthOrHeight=undefined] * @param {number} [options.maxWidthOrHeight=undefined]\n * @param {boolean} [options.useWebWorker=true]\n * @param {number} [options.maxIteration=10]\n * @param {number} [options.exifOrientation=] - default to be the exif orientation from the image file\n * @returns {Promise}\n */\nasync function imageCompression (file, options) {\n\n  let compressedFile\n\n  options.maxSizeMB = options.maxSizeMB || Number.POSITIVE_INFINITY\n  options.useWebWorker = typeof options.useWebWorker === 'boolean' ? options.useWebWorker : true\n\n  if (!(file instanceof Blob || file instanceof File)) {\n    throw new Error('The file given is not an instance of Blob or File')\n  } else if (!/^image/.test(file.type)) {\n    throw new Error('The file given is not an image')\n  }\n\n  // try run in web worker, fall back to run in main thread\n  const inWebWorker = typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope\n\n  // if (inWebWorker) {\n  //   console.log('run compression in web worker')\n  // } else {\n  //   console.log('run compression in main thread')\n  // }\n\n  if (options.useWebWorker && typeof Worker === 'function' && !inWebWorker) {\n    try {\n      // \"compressOnWebWorker\" is kind of like a recursion to call \"imageCompression\" again inside web worker\n      compressedFile = await compressOnWebWorker(file, options)\n    } catch (e) {\n      // console.error('run compression in web worker failed', e)\n      compressedFile = await compress(file, options)\n    }\n  } else {\n    compressedFile = await compress(file, options)\n  }\n\n  try {\n    compressedFile.name = file.name\n    compressedFile.lastModified = file.lastModified\n  } catch (e) {}\n\n  return compressedFile\n}\n\nimageCompression.getDataUrlFromFile = getDataUrlFromFile\nimageCompression.getFilefromDataUrl = getFilefromDataUrl\nimageCompression.loadImage = loadImage\nimageCompression.drawImageInCanvas = drawImageInCanvas\nimageCompression.drawFileInCanvas = drawFileInCanvas\nimageCompression.canvasToFile = canvasToFile\nimageCompression.getExifOrientation = getExifOrientation\nimageCompression.handleMaxWidthOrHeight = handleMaxWidthOrHeight\nimageCompression.followExifOrientation = followExifOrientation\n\nexport default imageCompression\n"],"names":["reader","onerror","e","Promise","dataurl","split","bstr","length","filename","Blob","resolve","loadImage","quality","$return","$error","type","fileName","offset","view","getUint32","getUint16","little","file","maxWidthOrHeight","options","needToHandle","img","canvas","ctx","width","transform","compress","maxIteration","then","$await_9","name","cnt","imageCompression","getDataUrlFromFile","drawImageInCanvas","getExifOrientation","getFilefromDataUrl","drawFileInCanvas","canvasToFile","handleMaxWidthOrHeight","followExifOrientation"],"mappings":"mUAwBEA,EAAAC,QAAO,SAAAC,qJAYH,IAAAC,gCACAC,EAAAC,qDACAC,EAAKC,wEAaqBC,wBAE5B,IAAAC,yBACAD,mBAGJE,gBAgBcC,2zBAiCP,mCAA2EC,kEAA3E,IAAAT,QAAA,SAAAU,EAAAC,iGAEDC,yDAC4BC,2lBAsBFC,YACtBC,EAAAC,YAA4B,6DAI5BD,EAAAE,iBAAAC,uEAMAH,EAAAE,8DAMWlB,wBACXoB,qEAcNC,EAAiBC,mBACjBC,kKAkBSC,6CAIPC,kEA2BAC,qBAEFC,IAAAA,kCAOFF,EAAAE,qDAGiDD,EAAAE,6EACvCF,EAAAE,UAAc,EAAG,EAAG,uBAAaF,EAAAE,2EACjCF,EAAAE,UAAc,4BAAyBF,EAAAE,8ECvMnCC,8EAGFP,EAAAQ,+SAUmBC,KAAA,SAAAC,gBAAAA,8eAULC,w5BC/C5B,MAAIC,UAIJ,uYAaMlC,ukBAyCgBmC,iBAAAC,6OAGVD,iBAAAE,+OAGJF,iBAAAG,+gECNWL,0HAMnBE,iBAAAI,mBAAsCA,mBACtCJ,iBAAA1B,oBACA0B,iBAAAE,oCACAF,iBAAAK,iBAAAA,iBACAL,iBAAAM,0BACAN,iBAAAG,sCACAH,iBAAAO,8CACAP,iBAAAQ,sBAAAA"}
\ No newline at end of file
diff --git a/dist/browser-image-compression.mjs b/dist/browser-image-compression.mjs
index 9338e9e..699d7fe 100644
--- a/dist/browser-image-compression.mjs
+++ b/dist/browser-image-compression.mjs
@@ -1,2 +1,2 @@
-function getDataUrlFromFile(e){return new Promise(function(n,t){var r=new FileReader;r.onload=function(){return n(r.result)},r.onerror=function(e){return t(e)},r.readAsDataURL(e)})}function getFilefromDataUrl(e,n){var t=arguments.length>2&&void 0!==arguments[2]?arguments[2]:Date.now();return new Promise(function(r){for(var i,a=e.split(","),o=a[0].match(/:(.*?);/)[1],s=atob(a[1]),c=s.length,u=new Uint8Array(c);c--;)u[c]=s.charCodeAt(c);try{i=new File([u],n,{type:o})}catch(e){(i=new Blob([u],{type:o})).name=n,i.lastModified=t}r(i)})}function loadImage(e){return new Promise(function(n,t){var r=new Image;r.onload=function(){return n(r)},r.onerror=function(e){return t(e)},r.src=e})}function drawImageInCanvas(e){var n;return(n="function"==typeof OffscreenCanvas?new OffscreenCanvas(e.width,e.height):document.createElement("canvas")).getContext("2d").drawImage(e,0,0,n.width,n.height),n}function drawFileInCanvas(e){return new Promise(function(n,t){var r,i,a=function $Try_2_Post(){try{return i=drawImageInCanvas(r),n([r,i])}catch(e){return t(e)}},o=function $Try_2_Catch(n){try{return getDataUrlFromFile(e).then(function(e){try{return loadImage(e).then(function(e){try{return r=e,a()}catch(e){return t(e)}},t)}catch(e){return t(e)}},t)}catch(e){return t(e)}};try{return createImageBitmap(e).then(function(e){try{return r=e,a()}catch(e){return o()}},o)}catch(e){o()}})}function canvasToFile(e,n,t,r){var i=arguments.length>4&&void 0!==arguments[4]?arguments[4]:1;return new Promise(function(a,o){var s;return"function"==typeof OffscreenCanvas&&e instanceof OffscreenCanvas?e.convertToBlob({type:n,quality:i}).then(function(e){try{return(s=e).name=t,s.lastModified=r,$If_4.call(this)}catch(e){return o(e)}}.bind(this),o):getFilefromDataUrl(e.toDataURL(n,i),t,r).then(function(e){try{return s=e,$If_4.call(this)}catch(e){return o(e)}}.bind(this),o);function $If_4(){return a(s)}})}function getExifOrientation(e){return new Promise(function(n,t){var r=new FileReader;r.onload=function(e){var t=new DataView(e.target.result);if(65496!=t.getUint16(0,!1))return n(-2);for(var r=t.byteLength,i=2;ii||e.height>i);return a?e.width>e.height?(n.width=i,n.height=e.height/e.width*i):(n.width=e.width/e.height*i,n.height=i):(n.width=e.width,n.height=e.height),r.drawImage(e,0,0,n.width,n.height),[n,a]}function followExifOrientation(e,n,t){var r=n.getContext("2d"),i=e.width,a=e.height;switch(4a?(s.width*=.9,s.height*=.9,s.getContext("2d").drawImage(o,0,0,s.width,s.height),canvasToFile(s,e.type,e.name,e.lastModified,m).then(function(e){try{return h=e,$Loop_4}catch(e){return r(e)}},r)):[1]},l=function $Loop_4_exit(){return c.call(this)};return(u=function(e){for(;e;){if(e.then)return void e.then(u,r);try{if(e.pop){if(e.length)return e.pop()?l.call(this):e;e=f}else e=e.call(this)}catch(e){return r(e)}}}.bind(this))(f)}var g,d=function $Loop_6(){return i--&&h.size>a?(s.width*=.9,s.height*=.9,s.getContext("2d").drawImage(o,0,0,s.width,s.height),m*=.9,canvasToFile(s,e.type,e.name,e.lastModified,m).then(function(e){try{return h=e,$Loop_6}catch(e){return r(e)}},r)):[1]},p=function $Loop_6_exit(){return c.call(this)};return(g=function(e){for(;e;){if(e.then)return void e.then(g,r);try{if(e.pop){if(e.length)return e.pop()?p.call(this):e;e=d}else e=e.call(this)}catch(e){return r(e)}}}.bind(this))(d)}catch(e){return r(e)}}.bind(this),r)}catch(e){return r(e)}}.bind(this),r)}catch(e){return r(e)}}.bind(this),r)})}var e,n=0;var t=function createWorker(e){return new Worker(URL.createObjectURL(new Blob(["(".concat(e,")()")])))}(function(){self.addEventListener("message",function(e){return new Promise(function(n,t){var r,i,a,o,s=e.data;r=s.file,i=s.id,a=s.imageCompressionLibUrl,o=s.options;var c=function $Try_1_Post(){try{return n()}catch(e){return t(e)}},u=function $Try_1_Catch(e){try{return self.postMessage({error:e.message,id:i}),c()}catch(e){return t(e)}};try{var f;return importScripts(a),imageCompression(r,o).then(function(e){try{return f=e,self.postMessage({file:f,id:i}),c()}catch(e){return u(e)}},u)}catch(e){u(e)}})})});function compressOnWebWorker(r,i){return new Promise(function(a,o){return new Promise(function(s,c){e||(e=function createSourceObject(e){return URL.createObjectURL(new Blob([e],{type:"application/javascript"}))}("\n    function imageCompression (){return (".concat(imageCompression,").apply(null, arguments)}\n    \n    imageCompression.getDataUrlFromFile = ").concat(imageCompression.getDataUrlFromFile,"\n    imageCompression.getFilefromDataUrl = ").concat(imageCompression.getFilefromDataUrl,"\n    imageCompression.loadImage = ").concat(imageCompression.loadImage,"\n    imageCompression.drawImageInCanvas = ").concat(imageCompression.drawImageInCanvas,"\n    imageCompression.drawFileInCanvas = ").concat(imageCompression.drawFileInCanvas,"\n    imageCompression.canvasToFile = ").concat(imageCompression.canvasToFile,"\n    imageCompression.getExifOrientation = ").concat(imageCompression.getExifOrientation,"\n    imageCompression.handleMaxWidthOrHeight = ").concat(imageCompression.handleMaxWidthOrHeight,"\n    imageCompression.followExifOrientation = ").concat(imageCompression.followExifOrientation,"\n    \n    getDataUrlFromFile = imageCompression.getDataUrlFromFile\n    getFilefromDataUrl = imageCompression.getFilefromDataUrl\n    loadImage = imageCompression.loadImage\n    drawImageInCanvas = imageCompression.drawImageInCanvas\n    drawFileInCanvas = imageCompression.drawFileInCanvas\n    canvasToFile = imageCompression.canvasToFile\n    getExifOrientation = imageCompression.getExifOrientation\n    handleMaxWidthOrHeight = imageCompression.handleMaxWidthOrHeight\n    followExifOrientation = imageCompression.followExifOrientation\n\n    function compress (){return (").concat(compress,").apply(null, arguments)}\n    ")));var u=n++;return t.addEventListener("message",function handler(e){e.data.id===u&&(t.removeEventListener("message",handler),e.data.error&&o(e.data.error),a(e.data.file))}),t.postMessage({file:r,id:u,imageCompressionLibUrl:e,options:i}),s()})})}function imageCompression(e,n){return new Promise(function(t,r){var i,a;if(n.maxSizeMB=n.maxSizeMB||Number.POSITIVE_INFINITY,n.useWebWorker="boolean"!=typeof n.useWebWorker||n.useWebWorker,!(e instanceof Blob||e instanceof File))return r(new Error("The file given is not an instance of Blob or File"));if(!/^image/.test(e.type))return r(new Error("The file given is not an image"));if(a="undefined"!=typeof WorkerGlobalScope&&self instanceof WorkerGlobalScope,!n.useWebWorker||"function"!=typeof Worker||a)return compress(e,n).then(function(e){try{return i=e,$If_3.call(this)}catch(e){return r(e)}}.bind(this),r);var o=function(){try{return $If_3.call(this)}catch(e){return r(e)}}.bind(this),s=function $Try_1_Catch(t){try{return compress(e,n).then(function(e){try{return i=e,o()}catch(e){return r(e)}},r)}catch(e){return r(e)}};try{return compressOnWebWorker(e,n).then(function(e){try{return i=e,o()}catch(e){return s()}},s)}catch(e){s()}function $If_3(){try{i.name=e.name,i.lastModified=e.lastModified}catch(e){}return t(i)}})}imageCompression.getDataUrlFromFile=getDataUrlFromFile,imageCompression.getFilefromDataUrl=getFilefromDataUrl,imageCompression.loadImage=loadImage,imageCompression.drawImageInCanvas=drawImageInCanvas,imageCompression.drawFileInCanvas=drawFileInCanvas,imageCompression.canvasToFile=canvasToFile,imageCompression.getExifOrientation=getExifOrientation,imageCompression.handleMaxWidthOrHeight=handleMaxWidthOrHeight,imageCompression.followExifOrientation=followExifOrientation;export default imageCompression;
+function getDataUrlFromFile(e){return new Promise(function(t,n){var r=new FileReader;r.onload=function(){return t(r.result)},r.onerror=function(e){return n(e)},r.readAsDataURL(e)})}function getFilefromDataUrl(e,t){var n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:Date.now();return new Promise(function(r){for(var i,a=e.split(","),o=a[0].match(/:(.*?);/)[1],s=atob(a[1]),c=s.length,u=new Uint8Array(c);c--;)u[c]=s.charCodeAt(c);try{i=new File([u],t,{type:o})}catch(e){(i=new Blob([u],{type:o})).name=t,i.lastModified=n}r(i)})}function loadImage(e){return new Promise(function(t,n){var r=new Image;r.onload=function(){return t(r)},r.onerror=function(e){return n(e)},r.src=e})}function drawImageInCanvas(e){var t;return(t="function"==typeof OffscreenCanvas?new OffscreenCanvas(e.width,e.height):document.createElement("canvas")).getContext("2d").drawImage(e,0,0,t.width,t.height),t}function drawFileInCanvas(e){return new Promise(function(t,n){var r,i,a=function $Try_2_Post(){try{return i=drawImageInCanvas(r),t([r,i])}catch(e){return n(e)}},o=function $Try_2_Catch(t){try{return getDataUrlFromFile(e).then(function(e){try{return loadImage(e).then(function(e){try{return r=e,a()}catch(e){return n(e)}},n)}catch(e){return n(e)}},n)}catch(e){return n(e)}};try{return createImageBitmap(e).then(function(e){try{return r=e,a()}catch(e){return o()}},o)}catch(e){o()}})}function canvasToFile(e,t,n,r){var i=arguments.length>4&&void 0!==arguments[4]?arguments[4]:1;return new Promise(function(a,o){var s;return"function"==typeof OffscreenCanvas&&e instanceof OffscreenCanvas?e.convertToBlob({type:t,quality:i}).then(function(e){try{return(s=e).name=n,s.lastModified=r,$If_4.call(this)}catch(e){return o(e)}}.bind(this),o):getFilefromDataUrl(e.toDataURL(t,i),n,r).then(function(e){try{return s=e,$If_4.call(this)}catch(e){return o(e)}}.bind(this),o);function $If_4(){return a(s)}})}function getExifOrientation(e){return new Promise(function(t,n){var r=new FileReader;r.onload=function(e){var n=new DataView(e.target.result);if(65496!=n.getUint16(0,!1))return t(-2);for(var r=n.byteLength,i=2;ii||e.height>i);return a?e.width>e.height?(t.width=i,t.height=e.height/e.width*i):(t.width=e.width/e.height*i,t.height=i):(t.width=e.width,t.height=e.height),r.drawImage(e,0,0,t.width,t.height),[t,a]}function followExifOrientation(e,t,n){var r=t.getContext("2d"),i=t.width,a=t.height;switch(4a?(s.width*=.9,s.height*=.9,s.getContext("2d").drawImage(o,0,0,s.width,s.height),canvasToFile(s,e.type,e.name,e.lastModified,m).then(function(e){try{return h=e,$Loop_4}catch(e){return r(e)}},r)):[1]},l=function $Loop_4_exit(){return c.call(this)};return(u=function(e){for(;e;){if(e.then)return void e.then(u,r);try{if(e.pop){if(e.length)return e.pop()?l.call(this):e;e=f}else e=e.call(this)}catch(e){return r(e)}}}.bind(this))(f)}var g,d=function $Loop_6(){return i--&&h.size>a?(s.width*=.9,s.height*=.9,s.getContext("2d").drawImage(o,0,0,s.width,s.height),m*=.9,canvasToFile(s,e.type,e.name,e.lastModified,m).then(function(e){try{return h=e,$Loop_6}catch(e){return r(e)}},r)):[1]},p=function $Loop_6_exit(){return c.call(this)};return(g=function(e){for(;e;){if(e.then)return void e.then(g,r);try{if(e.pop){if(e.length)return e.pop()?p.call(this):e;e=d}else e=e.call(this)}catch(e){return r(e)}}}.bind(this))(d)}catch(e){return r(e)}}.bind(this),r)}catch(e){return r(e)}}.bind(this),r)}catch(e){return r(e)}}.bind(this),r)})}var e,t=0;var n=function createWorker(e){return new Worker(URL.createObjectURL(new Blob(["(".concat(e,")()")])))}(function(){self.addEventListener("message",function(e){return new Promise(function(t,n){var r,i,a,o,s=e.data;r=s.file,i=s.id,a=s.imageCompressionLibUrl,o=s.options;var c=function $Try_1_Post(){try{return t()}catch(e){return n(e)}},u=function $Try_1_Catch(e){try{return self.postMessage({error:e.message,id:i}),c()}catch(e){return n(e)}};try{var f;return importScripts(a),imageCompression(r,o).then(function(e){try{return f=e,self.postMessage({file:f,id:i}),c()}catch(e){return u(e)}},u)}catch(e){u(e)}})})});function compressOnWebWorker(r,i){return new Promise(function(a,o){return new Promise(function(s,c){e||(e=function createSourceObject(e){return URL.createObjectURL(new Blob([e],{type:"application/javascript"}))}("\n    function imageCompression (){return (".concat(imageCompression,").apply(null, arguments)}\n    \n    imageCompression.getDataUrlFromFile = ").concat(imageCompression.getDataUrlFromFile,"\n    imageCompression.getFilefromDataUrl = ").concat(imageCompression.getFilefromDataUrl,"\n    imageCompression.loadImage = ").concat(imageCompression.loadImage,"\n    imageCompression.drawImageInCanvas = ").concat(imageCompression.drawImageInCanvas,"\n    imageCompression.drawFileInCanvas = ").concat(imageCompression.drawFileInCanvas,"\n    imageCompression.canvasToFile = ").concat(imageCompression.canvasToFile,"\n    imageCompression.getExifOrientation = ").concat(imageCompression.getExifOrientation,"\n    imageCompression.handleMaxWidthOrHeight = ").concat(imageCompression.handleMaxWidthOrHeight,"\n    imageCompression.followExifOrientation = ").concat(imageCompression.followExifOrientation,"\n    \n    getDataUrlFromFile = imageCompression.getDataUrlFromFile\n    getFilefromDataUrl = imageCompression.getFilefromDataUrl\n    loadImage = imageCompression.loadImage\n    drawImageInCanvas = imageCompression.drawImageInCanvas\n    drawFileInCanvas = imageCompression.drawFileInCanvas\n    canvasToFile = imageCompression.canvasToFile\n    getExifOrientation = imageCompression.getExifOrientation\n    handleMaxWidthOrHeight = imageCompression.handleMaxWidthOrHeight\n    followExifOrientation = imageCompression.followExifOrientation\n\n    function compress (){return (").concat(compress,").apply(null, arguments)}\n    ")));var u=t++;return n.addEventListener("message",function handler(e){e.data.id===u&&(n.removeEventListener("message",handler),e.data.error&&o(e.data.error),a(e.data.file))}),n.postMessage({file:r,id:u,imageCompressionLibUrl:e,options:i}),s()})})}function imageCompression(e,t){return new Promise(function(n,r){var i,a;if(t.maxSizeMB=t.maxSizeMB||Number.POSITIVE_INFINITY,t.useWebWorker="boolean"!=typeof t.useWebWorker||t.useWebWorker,!(e instanceof Blob||e instanceof File))return r(new Error("The file given is not an instance of Blob or File"));if(!/^image/.test(e.type))return r(new Error("The file given is not an image"));if(a="undefined"!=typeof WorkerGlobalScope&&self instanceof WorkerGlobalScope,!t.useWebWorker||"function"!=typeof Worker||a)return compress(e,t).then(function(e){try{return i=e,$If_3.call(this)}catch(e){return r(e)}}.bind(this),r);var o=function(){try{return $If_3.call(this)}catch(e){return r(e)}}.bind(this),s=function $Try_1_Catch(n){try{return compress(e,t).then(function(e){try{return i=e,o()}catch(e){return r(e)}},r)}catch(e){return r(e)}};try{return compressOnWebWorker(e,t).then(function(e){try{return i=e,o()}catch(e){return s()}},s)}catch(e){s()}function $If_3(){try{i.name=e.name,i.lastModified=e.lastModified}catch(e){}return n(i)}})}imageCompression.getDataUrlFromFile=getDataUrlFromFile,imageCompression.getFilefromDataUrl=getFilefromDataUrl,imageCompression.loadImage=loadImage,imageCompression.drawImageInCanvas=drawImageInCanvas,imageCompression.drawFileInCanvas=drawFileInCanvas,imageCompression.canvasToFile=canvasToFile,imageCompression.getExifOrientation=getExifOrientation,imageCompression.handleMaxWidthOrHeight=handleMaxWidthOrHeight,imageCompression.followExifOrientation=followExifOrientation;export default imageCompression;
 //# sourceMappingURL=browser-image-compression.mjs.map
diff --git a/dist/browser-image-compression.mjs.map b/dist/browser-image-compression.mjs.map
index 021bc0e..fc3ac3e 100644
--- a/dist/browser-image-compression.mjs.map
+++ b/dist/browser-image-compression.mjs.map
@@ -1 +1 @@
-{"version":3,"file":"browser-image-compression.mjs","sources":["../lib/utils.js","../lib/image-compression.js","../lib/web-worker.js","../lib/index.js"],"sourcesContent":["/**\n * getDataUrlFromFile\n *\n * @param {File} file\n * @returns {Promise}\n */\nexport function getDataUrlFromFile (file) {\n  return new Promise((resolve, reject) => {\n    const reader = new FileReader()\n    reader.onload = () => resolve(reader.result)\n    reader.onerror = (e) => reject(e)\n    reader.readAsDataURL(file)\n  })\n}\n\n/**\n * getFilefromDataUrl\n *\n * @param {string} dataurl\n * @param {string} filename\n * @param {number} [lastModified=Date.now()]\n * @returns {Promise}\n */\nexport function getFilefromDataUrl (dataurl, filename, lastModified = Date.now()) {\n  return new Promise((resolve) => {\n    const arr = dataurl.split(',')\n    const mime = arr[0].match(/:(.*?);/)[1]\n    const bstr = atob(arr[1])\n    let n = bstr.length\n    const u8arr = new Uint8Array(n)\n    while (n--) {\n      u8arr[n] = bstr.charCodeAt(n)\n    }\n    let file\n    try {\n      file = new File([u8arr], filename, { type: mime }) // Edge do not support File constructor\n    } catch (e) {\n      file = new Blob([u8arr], { type: mime })\n      file.name = filename\n      file.lastModified = lastModified\n    }\n    resolve(file)\n  })\n}\n\n/**\n * loadImage\n *\n * @param {string} src\n * @returns {Promise}\n */\nexport function loadImage (src) {\n  return new Promise((resolve, reject) => {\n    const img = new Image()\n    img.onload = () => resolve(img)\n    img.onerror = (e) => reject(e)\n    img.src = src\n  })\n}\n\n/**\n * drawImageInCanvas\n *\n * @param {HTMLImageElement} img\n * @returns {HTMLCanvasElement}\n */\nexport function drawImageInCanvas (img) {\n  let canvas\n  if (typeof OffscreenCanvas === 'function') {\n    canvas = new OffscreenCanvas(img.width, img.height)\n  } else {\n    canvas = document.createElement('canvas')\n  }\n  const ctx = canvas.getContext('2d')\n  ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n  return canvas\n}\n\n/**\n * drawFileInCanvas\n *\n * @param {File} file\n * @returns {Promise<[ImageBitmap | HTMLImageElement, HTMLCanvasElement]>}\n */\nexport async function drawFileInCanvas (file) {\n  let img\n  try {\n    img = await createImageBitmap(file)\n  } catch (e) {\n    const dataUrl = await getDataUrlFromFile(file)\n    img = await loadImage(dataUrl)\n  }\n  const canvas = drawImageInCanvas(img)\n  return [img, canvas]\n}\n\n/**\n * canvasToFile\n *\n * @param canvas\n * @param {string} fileType\n * @param {string} fileName\n * @param {number} fileLastModified\n * @param {number} [quality]\n * @returns {Promise}\n */\nexport async function canvasToFile (canvas, fileType, fileName, fileLastModified, quality = 1) {\n  let compressedFile\n  if (typeof OffscreenCanvas === 'function' && canvas instanceof OffscreenCanvas) {\n    compressedFile = await canvas.convertToBlob({ type: fileType, quality })\n    compressedFile.name = fileName\n    compressedFile.lastModified = fileLastModified\n  } else {\n    const dataUrl = canvas.toDataURL(fileType, quality)\n    compressedFile = await getFilefromDataUrl(dataUrl, fileName, fileLastModified)\n  }\n  return compressedFile\n}\n\n/**\n * getExifOrientation\n * get image exif orientation info\n * source: https://stackoverflow.com/a/32490603/10395024\n *\n * @param {File} file\n * @returns {Promise} - orientation id, see https://i.stack.imgur.com/VGsAj.gif\n */\nexport function getExifOrientation (file) {\n  return new Promise((resolve, reject) => {\n    const reader = new FileReader()\n    reader.onload = (e) => {\n      const view = new DataView(e.target.result)\n      if (view.getUint16(0, false) != 0xFFD8) {\n        return resolve(-2)\n      }\n      const length = view.byteLength\n      let offset = 2\n      while (offset < length) {\n        if (view.getUint16(offset + 2, false) <= 8) return resolve(-1)\n        const marker = view.getUint16(offset, false)\n        offset += 2\n        if (marker == 0xFFE1) {\n          if (view.getUint32(offset += 2, false) != 0x45786966) {\n            return resolve(-1)\n          }\n\n          var little = view.getUint16(offset += 6, false) == 0x4949\n          offset += view.getUint32(offset + 4, little)\n          var tags = view.getUint16(offset, little)\n          offset += 2\n          for (var i = 0; i < tags; i++) {\n            if (view.getUint16(offset + (i * 12), little) == 0x0112) {\n              return resolve(view.getUint16(offset + (i * 12) + 8, little))\n            }\n          }\n        } else if ((marker & 0xFF00) != 0xFF00) {\n          break\n        } else {\n          offset += view.getUint16(offset, false)\n        }\n      }\n      return resolve(-1)\n    }\n    reader.onerror = (e) => reject(e)\n    reader.readAsArrayBuffer(file)\n  })\n}\n\n/**\n *\n * @param img\n * @param canvas\n * @param options\n * @returns {Promise<[HTMLCanvasElement, boolean]>}\n */\nexport function handleMaxWidthOrHeight (img, canvas, options) {\n  const ctx = canvas.getContext('2d')\n\n  const maxWidthOrHeight = options.maxWidthOrHeight\n  const needToHandle = Number.isInteger(maxWidthOrHeight) && (img.width > maxWidthOrHeight || img.height > maxWidthOrHeight)\n  if (needToHandle) {\n    if (img.width > img.height) {\n      canvas.width = maxWidthOrHeight\n      canvas.height = (img.height / img.width) * maxWidthOrHeight\n    } else {\n      canvas.width = (img.width / img.height) * maxWidthOrHeight\n      canvas.height = maxWidthOrHeight\n    }\n  } else {\n    canvas.width = img.width\n    canvas.height = img.height\n  }\n\n  ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n  return [canvas, needToHandle]\n}\n\n/**\n * followExifOrientation\n * source: https://stackoverflow.com/a/40867559/10395024\n *\n * @param {HTMLImageElement} img\n * @param {HTMLCanvasElement} canvas\n * @param {number} exifOrientation\n * @returns {HTMLCanvasElement} canvas\n */\nexport function followExifOrientation (img, canvas, exifOrientation) {\n  const ctx = canvas.getContext('2d')\n\n  const width = img.width\n  const height = img.height\n\n  // set proper canvas dimensions before transform & export\n  if (4 < exifOrientation && exifOrientation < 9) {\n    canvas.width = height\n    canvas.height = width\n  } else {\n    canvas.width = width\n    canvas.height = height\n  }\n\n  // transform context before drawing image\n  switch (exifOrientation) {\n    case 2: ctx.transform(-1, 0, 0, 1, width, 0); break;\n    case 3: ctx.transform(-1, 0, 0, -1, width, height); break;\n    case 4: ctx.transform(1, 0, 0, -1, 0, height); break;\n    case 5: ctx.transform(0, 1, 1, 0, 0, 0); break;\n    case 6: ctx.transform(0, 1, -1, 0, height, 0); break;\n    case 7: ctx.transform(0, -1, -1, 0, height, width); break;\n    case 8: ctx.transform(0, -1, 1, 0, 0, width); break;\n    default: break;\n  }\n\n  ctx.drawImage(img, 0, 0)\n\n  return canvas\n}","import { canvasToFile, drawFileInCanvas, followExifOrientation, getExifOrientation, handleMaxWidthOrHeight } from './utils'\n\n/**\n * Compress an image file.\n *\n * @param {File} file\n * @param {Object} options - { maxSizeMB=Number.POSITIVE_INFINITY, maxWidthOrHeight, useWebWorker=true, maxIteration = 10, exifOrientation }\n * @param {number} [options.maxSizeMB=Number.POSITIVE_INFINITY]\n * @param {number} [options.maxWidthOrHeight=undefined] * @param {number} [options.maxWidthOrHeight=undefined]\n * @param {number} [options.maxIteration=10]\n * @param {number} [options.exifOrientation=] - default to be the exif orientation from the image file\n * @returns {Promise}\n */\nexport default async function compress (file, options) {\n  let remainingTrials = options.maxIteration || 10\n\n  const maxSizeByte = options.maxSizeMB * 1024 * 1024\n\n  // no need to compress or resize\n  if (file.size <= maxSizeByte && typeof options.maxWidthOrHeight === 'undefined') {\n    return file\n  }\n\n  let img, canvas, isResized\n\n  // drawFileInCanvas\n  let temp = await drawFileInCanvas(file)\n  img = temp[0]\n  canvas = temp[1]\n\n  // handleMaxWidthOrHeight\n  let temp2 = handleMaxWidthOrHeight(img, canvas, options)\n  canvas = temp2[0]\n  isResized = temp2[1]\n  // no need to compress or resize\n  if (file.size <= maxSizeByte && !isResized) {\n    return file\n  }\n\n  // exifOrientation\n  options.exifOrientation = options.exifOrientation || await getExifOrientation(file)\n  canvas = followExifOrientation(img, canvas, options.exifOrientation)\n\n  let quality = 1\n  let compressedFile = await canvasToFile(canvas, file.type, file.name, file.lastModified, quality)\n  if (file.type === 'image/png') {\n    while (remainingTrials-- && compressedFile.size > maxSizeByte) {\n      canvas.width *= 0.9\n      canvas.height *= 0.9\n\n      const ctx = canvas.getContext('2d')\n      ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n\n      compressedFile = await canvasToFile(canvas, file.type, file.name, file.lastModified, quality)\n    }\n  } else { // if (file.type === 'image/jpeg') {\n    while (remainingTrials-- && compressedFile.size > maxSizeByte) {\n      canvas.width *= 0.9\n      canvas.height *= 0.9\n\n      const ctx = canvas.getContext('2d')\n      ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n\n      quality *= 0.9\n      compressedFile = await canvasToFile(canvas, file.type, file.name, file.lastModified, quality)\n    }\n  }\n\n  return compressedFile\n}","import imageCompression from './index'\nimport compress from './image-compression'\n\nlet cnt = 0\nlet imageCompressionLibUrl\n\nfunction createWorker (f) {\n  return new Worker(URL.createObjectURL(new Blob([`(${f})()`])))\n}\n\nconst worker = createWorker(() => {\n  self.addEventListener('message', async (e) => {\n    const { file, id, imageCompressionLibUrl, options } = e.data\n    try {\n      // console.log('[worker] importScripts', imageCompressionLibUrl)\n      importScripts(imageCompressionLibUrl)\n      // console.log('[worker] self', self)\n      const compressedFile = await imageCompression(file, options)\n      self.postMessage({ file: compressedFile, id })\n    } catch (e) {\n      // console.error('[worker] error', e)\n      self.postMessage({ error: e.message, id })\n    }\n  })\n})\n\nfunction createSourceObject (str) {\n  return URL.createObjectURL(new Blob([str], { type: 'application/javascript' }))\n}\n\nexport function compressOnWebWorker (file, options) {\n  return new Promise(async (resolve, reject) => {\n    if (!imageCompressionLibUrl) {\n      imageCompressionLibUrl = createSourceObject(`\n    function imageCompression (){return (${imageCompression}).apply(null, arguments)}\n    \n    imageCompression.getDataUrlFromFile = ${imageCompression.getDataUrlFromFile}\n    imageCompression.getFilefromDataUrl = ${imageCompression.getFilefromDataUrl}\n    imageCompression.loadImage = ${imageCompression.loadImage}\n    imageCompression.drawImageInCanvas = ${imageCompression.drawImageInCanvas}\n    imageCompression.drawFileInCanvas = ${imageCompression.drawFileInCanvas}\n    imageCompression.canvasToFile = ${imageCompression.canvasToFile}\n    imageCompression.getExifOrientation = ${imageCompression.getExifOrientation}\n    imageCompression.handleMaxWidthOrHeight = ${imageCompression.handleMaxWidthOrHeight}\n    imageCompression.followExifOrientation = ${imageCompression.followExifOrientation}\n    \n    getDataUrlFromFile = imageCompression.getDataUrlFromFile\n    getFilefromDataUrl = imageCompression.getFilefromDataUrl\n    loadImage = imageCompression.loadImage\n    drawImageInCanvas = imageCompression.drawImageInCanvas\n    drawFileInCanvas = imageCompression.drawFileInCanvas\n    canvasToFile = imageCompression.canvasToFile\n    getExifOrientation = imageCompression.getExifOrientation\n    handleMaxWidthOrHeight = imageCompression.handleMaxWidthOrHeight\n    followExifOrientation = imageCompression.followExifOrientation\n\n    function compress (){return (${compress}).apply(null, arguments)}\n    `)\n      // imageCompressionLibUrl = new URL('../dist/browser-image-compression.js', window.location.href).href\n    }\n    let id = cnt++\n\n    function handler (e) {\n      if (e.data.id === id) {\n        worker.removeEventListener('message', handler)\n        if (e.data.error) {\n          reject(e.data.error)\n        }\n        resolve(e.data.file)\n      }\n    }\n\n    worker.addEventListener('message', handler)\n    worker.postMessage({ file, id, imageCompressionLibUrl, options })\n  })\n}","import compress from './image-compression'\nimport {\n  canvasToFile,\n  drawFileInCanvas,\n  drawImageInCanvas,\n  getDataUrlFromFile,\n  getFilefromDataUrl,\n  loadImage,\n  getExifOrientation,\n  handleMaxWidthOrHeight,\n  followExifOrientation\n} from './utils.js'\nimport { compressOnWebWorker } from './web-worker'\n\n/**\n * Compress an image file.\n *\n * @param {File} file\n * @param {Object} options - { maxSizeMB=Number.POSITIVE_INFINITY, maxWidthOrHeight, useWebWorker=true, maxIteration = 10, exifOrientation }\n * @param {number} [options.maxSizeMB=Number.POSITIVE_INFINITY]\n * @param {number} [options.maxWidthOrHeight=undefined] * @param {number} [options.maxWidthOrHeight=undefined]\n * @param {boolean} [options.useWebWorker=true]\n * @param {number} [options.maxIteration=10]\n * @param {number} [options.exifOrientation=] - default to be the exif orientation from the image file\n * @returns {Promise}\n */\nasync function imageCompression (file, options) {\n\n  let compressedFile\n\n  options.maxSizeMB = options.maxSizeMB || Number.POSITIVE_INFINITY\n  options.useWebWorker = typeof options.useWebWorker === 'boolean' ? options.useWebWorker : true\n\n  if (!(file instanceof Blob || file instanceof File)) {\n    throw new Error('The file given is not an instance of Blob or File')\n  } else if (!/^image/.test(file.type)) {\n    throw new Error('The file given is not an image')\n  }\n\n  // try run in web worker, fall back to run in main thread\n  const inWebWorker = typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope\n\n  // if (inWebWorker) {\n  //   console.log('run compression in web worker')\n  // } else {\n  //   console.log('run compression in main thread')\n  // }\n\n  if (options.useWebWorker && typeof Worker === 'function' && !inWebWorker) {\n    try {\n      // \"compressOnWebWorker\" is kind of like a recursion to call \"imageCompression\" again inside web worker\n      compressedFile = await compressOnWebWorker(file, options)\n    } catch (e) {\n      // console.error('run compression in web worker failed', e)\n      compressedFile = await compress(file, options)\n    }\n  } else {\n    compressedFile = await compress(file, options)\n  }\n\n  try {\n    compressedFile.name = file.name\n    compressedFile.lastModified = file.lastModified\n  } catch (e) {}\n\n  return compressedFile\n}\n\nimageCompression.getDataUrlFromFile = getDataUrlFromFile\nimageCompression.getFilefromDataUrl = getFilefromDataUrl\nimageCompression.loadImage = loadImage\nimageCompression.drawImageInCanvas = drawImageInCanvas\nimageCompression.drawFileInCanvas = drawFileInCanvas\nimageCompression.canvasToFile = canvasToFile\nimageCompression.getExifOrientation = getExifOrientation\nimageCompression.handleMaxWidthOrHeight = handleMaxWidthOrHeight\nimageCompression.followExifOrientation = followExifOrientation\n\nexport default imageCompression\n"],"names":["reader","onerror","e","Promise","dataurl","split","bstr","length","filename","Blob","resolve","loadImage","quality","$return","$error","type","fileName","offset","view","getUint32","getUint16","little","file","maxWidthOrHeight","options","needToHandle","img","canvas","ctx","width","transform","compress","maxIteration","then","$await_9","name","cnt","imageCompression","getDataUrlFromFile","drawImageInCanvas","getExifOrientation","getFilefromDataUrl","drawFileInCanvas","canvasToFile","handleMaxWidthOrHeight","followExifOrientation"],"mappings":"6HAwBEA,EAAAC,QAAO,SAAAC,qJAYH,IAAAC,gCACAC,EAAAC,qDACAC,EAAKC,wEAaqBC,wBAE5B,IAAAC,yBACAD,mBAGJE,gBAgBcC,2zBAiCd,mCAAkFC,kEAA3E,IAAAT,QAAA,SAAAU,EAAAC,iGAEDC,yDAC4BC,2lBAsBFC,YACtBC,EAAAC,YAA4B,6DAI5BD,EAAAE,iBAAAC,uEAMAH,EAAAE,8DAMWlB,wBACXoB,qEAcNC,EAAiBC,mBACjBC,kKAkBSC,6CAIPC,kEA2BAC,qBAEFC,sCAOFF,EAAAE,qDAGiDD,EAAAE,6EACvCF,EAAAE,UAAc,EAAG,EAAG,uBAAaF,EAAAE,2EACjCF,EAAAE,UAAc,4BAAyBF,EAAAE,6DCvMnCC,8EAGFP,EAAAQ,+SAUmBC,KAAA,SAAAC,gBAAAA,8eAULC,w5BC/C5B,MAAIC,UAIJ,uYAaMlC,ukBAyCgBmC,iBAAAC,6OAGVD,iBAAAE,+OAGJF,iBAAAG,+gECNWL,mHAMnBE,iBAAAI,mBAAsCA,mBACtCJ,iBAAA1B,oBACA0B,iBAAAE,oCACAF,iBAAAK,iBAAAA,iBACAL,iBAAAM,0BACAN,iBAAAG,sCACAH,iBAAAO,8CACAP,iBAAAQ,sBAAAA"}
\ No newline at end of file
+{"version":3,"file":"browser-image-compression.mjs","sources":["../lib/utils.js","../lib/image-compression.js","../lib/web-worker.js","../lib/index.js"],"sourcesContent":["/**\n * getDataUrlFromFile\n *\n * @param {File} file\n * @returns {Promise}\n */\nexport function getDataUrlFromFile (file) {\n  return new Promise((resolve, reject) => {\n    const reader = new FileReader()\n    reader.onload = () => resolve(reader.result)\n    reader.onerror = (e) => reject(e)\n    reader.readAsDataURL(file)\n  })\n}\n\n/**\n * getFilefromDataUrl\n *\n * @param {string} dataurl\n * @param {string} filename\n * @param {number} [lastModified=Date.now()]\n * @returns {Promise}\n */\nexport function getFilefromDataUrl (dataurl, filename, lastModified = Date.now()) {\n  return new Promise((resolve) => {\n    const arr = dataurl.split(',')\n    const mime = arr[0].match(/:(.*?);/)[1]\n    const bstr = atob(arr[1])\n    let n = bstr.length\n    const u8arr = new Uint8Array(n)\n    while (n--) {\n      u8arr[n] = bstr.charCodeAt(n)\n    }\n    let file\n    try {\n      file = new File([u8arr], filename, { type: mime }) // Edge do not support File constructor\n    } catch (e) {\n      file = new Blob([u8arr], { type: mime })\n      file.name = filename\n      file.lastModified = lastModified\n    }\n    resolve(file)\n  })\n}\n\n/**\n * loadImage\n *\n * @param {string} src\n * @returns {Promise}\n */\nexport function loadImage (src) {\n  return new Promise((resolve, reject) => {\n    const img = new Image()\n    img.onload = () => resolve(img)\n    img.onerror = (e) => reject(e)\n    img.src = src\n  })\n}\n\n/**\n * drawImageInCanvas\n *\n * @param {HTMLImageElement} img\n * @returns {HTMLCanvasElement}\n */\nexport function drawImageInCanvas (img) {\n  let canvas\n  if (typeof OffscreenCanvas === 'function') {\n    canvas = new OffscreenCanvas(img.width, img.height)\n  } else {\n    canvas = document.createElement('canvas')\n  }\n  const ctx = canvas.getContext('2d')\n  ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n  return canvas\n}\n\n/**\n * drawFileInCanvas\n *\n * @param {File} file\n * @returns {Promise<[ImageBitmap | HTMLImageElement, HTMLCanvasElement]>}\n */\nexport async function drawFileInCanvas (file) {\n  let img\n  try {\n    img = await createImageBitmap(file)\n  } catch (e) {\n    const dataUrl = await getDataUrlFromFile(file)\n    img = await loadImage(dataUrl)\n  }\n  const canvas = drawImageInCanvas(img)\n  return [img, canvas]\n}\n\n/**\n * canvasToFile\n *\n * @param canvas\n * @param {string} fileType\n * @param {string} fileName\n * @param {number} fileLastModified\n * @param {number} [quality]\n * @returns {Promise}\n */\nexport async function canvasToFile (canvas, fileType, fileName, fileLastModified, quality = 1) {\n  let compressedFile\n  if (typeof OffscreenCanvas === 'function' && canvas instanceof OffscreenCanvas) {\n    compressedFile = await canvas.convertToBlob({ type: fileType, quality })\n    compressedFile.name = fileName\n    compressedFile.lastModified = fileLastModified\n  } else {\n    const dataUrl = canvas.toDataURL(fileType, quality)\n    compressedFile = await getFilefromDataUrl(dataUrl, fileName, fileLastModified)\n  }\n  return compressedFile\n}\n\n/**\n * getExifOrientation\n * get image exif orientation info\n * source: https://stackoverflow.com/a/32490603/10395024\n *\n * @param {File} file\n * @returns {Promise} - orientation id, see https://i.stack.imgur.com/VGsAj.gif\n */\nexport function getExifOrientation (file) {\n  return new Promise((resolve, reject) => {\n    const reader = new FileReader()\n    reader.onload = (e) => {\n      const view = new DataView(e.target.result)\n      if (view.getUint16(0, false) != 0xFFD8) {\n        return resolve(-2)\n      }\n      const length = view.byteLength\n      let offset = 2\n      while (offset < length) {\n        if (view.getUint16(offset + 2, false) <= 8) return resolve(-1)\n        const marker = view.getUint16(offset, false)\n        offset += 2\n        if (marker == 0xFFE1) {\n          if (view.getUint32(offset += 2, false) != 0x45786966) {\n            return resolve(-1)\n          }\n\n          var little = view.getUint16(offset += 6, false) == 0x4949\n          offset += view.getUint32(offset + 4, little)\n          var tags = view.getUint16(offset, little)\n          offset += 2\n          for (var i = 0; i < tags; i++) {\n            if (view.getUint16(offset + (i * 12), little) == 0x0112) {\n              return resolve(view.getUint16(offset + (i * 12) + 8, little))\n            }\n          }\n        } else if ((marker & 0xFF00) != 0xFF00) {\n          break\n        } else {\n          offset += view.getUint16(offset, false)\n        }\n      }\n      return resolve(-1)\n    }\n    reader.onerror = (e) => reject(e)\n    reader.readAsArrayBuffer(file)\n  })\n}\n\n/**\n *\n * @param img\n * @param canvas\n * @param options\n * @returns {Promise<[HTMLCanvasElement, boolean]>}\n */\nexport function handleMaxWidthOrHeight (img, canvas, options) {\n  const ctx = canvas.getContext('2d')\n\n  const maxWidthOrHeight = options.maxWidthOrHeight\n  const needToHandle = Number.isInteger(maxWidthOrHeight) && (img.width > maxWidthOrHeight || img.height > maxWidthOrHeight)\n  if (needToHandle) {\n    if (img.width > img.height) {\n      canvas.width = maxWidthOrHeight\n      canvas.height = (img.height / img.width) * maxWidthOrHeight\n    } else {\n      canvas.width = (img.width / img.height) * maxWidthOrHeight\n      canvas.height = maxWidthOrHeight\n    }\n  } else {\n    canvas.width = img.width\n    canvas.height = img.height\n  }\n\n  ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n  return [canvas, needToHandle]\n}\n\n/**\n * followExifOrientation\n * source: https://stackoverflow.com/a/40867559/10395024\n *\n * @param {HTMLImageElement} img\n * @param {HTMLCanvasElement} canvas\n * @param {number} exifOrientation\n * @returns {HTMLCanvasElement} canvas\n */\nexport function followExifOrientation (img, canvas, exifOrientation) {\n  const ctx = canvas.getContext('2d')\n\n  const width = canvas.width\n  const height = canvas.height\n\n  // set proper canvas dimensions before transform & export\n  if (4 < exifOrientation && exifOrientation < 9) {\n    canvas.width = height\n    canvas.height = width\n  } else {\n    canvas.width = width\n    canvas.height = height\n  }\n\n  // transform context before drawing image\n  switch (exifOrientation) {\n    case 2: ctx.transform(-1, 0, 0, 1, width, 0); break;\n    case 3: ctx.transform(-1, 0, 0, -1, width, height); break;\n    case 4: ctx.transform(1, 0, 0, -1, 0, height); break;\n    case 5: ctx.transform(0, 1, 1, 0, 0, 0); break;\n    case 6: ctx.transform(0, 1, -1, 0, height, 0); break;\n    case 7: ctx.transform(0, -1, -1, 0, height, width); break;\n    case 8: ctx.transform(0, -1, 1, 0, 0, width); break;\n    default: break;\n  }\n\n  ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n\n  return canvas\n}","import { canvasToFile, drawFileInCanvas, followExifOrientation, getExifOrientation, handleMaxWidthOrHeight } from './utils'\n\n/**\n * Compress an image file.\n *\n * @param {File} file\n * @param {Object} options - { maxSizeMB=Number.POSITIVE_INFINITY, maxWidthOrHeight, useWebWorker=true, maxIteration = 10, exifOrientation }\n * @param {number} [options.maxSizeMB=Number.POSITIVE_INFINITY]\n * @param {number} [options.maxWidthOrHeight=undefined] * @param {number} [options.maxWidthOrHeight=undefined]\n * @param {number} [options.maxIteration=10]\n * @param {number} [options.exifOrientation=] - default to be the exif orientation from the image file\n * @returns {Promise}\n */\nexport default async function compress (file, options) {\n  let remainingTrials = options.maxIteration || 10\n\n  const maxSizeByte = options.maxSizeMB * 1024 * 1024\n\n  // no need to compress or resize\n  if (file.size <= maxSizeByte && typeof options.maxWidthOrHeight === 'undefined') {\n    return file\n  }\n\n  let img, canvas, isResized\n\n  // drawFileInCanvas\n  let temp = await drawFileInCanvas(file)\n  img = temp[0]\n  canvas = temp[1]\n\n  // handleMaxWidthOrHeight\n  let temp2 = handleMaxWidthOrHeight(img, canvas, options)\n  canvas = temp2[0]\n  isResized = temp2[1]\n  // no need to compress or resize\n  if (file.size <= maxSizeByte && !isResized) {\n    return file\n  }\n\n  // exifOrientation\n  options.exifOrientation = options.exifOrientation || await getExifOrientation(file)\n  canvas = followExifOrientation(img, canvas, options.exifOrientation)\n\n  let quality = 1\n  let compressedFile = await canvasToFile(canvas, file.type, file.name, file.lastModified, quality)\n  if (file.type === 'image/png') {\n    while (remainingTrials-- && compressedFile.size > maxSizeByte) {\n      canvas.width *= 0.9\n      canvas.height *= 0.9\n\n      const ctx = canvas.getContext('2d')\n      ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n\n      compressedFile = await canvasToFile(canvas, file.type, file.name, file.lastModified, quality)\n    }\n  } else { // if (file.type === 'image/jpeg') {\n    while (remainingTrials-- && compressedFile.size > maxSizeByte) {\n      canvas.width *= 0.9\n      canvas.height *= 0.9\n\n      const ctx = canvas.getContext('2d')\n      ctx.drawImage(img, 0, 0, canvas.width, canvas.height)\n\n      quality *= 0.9\n      compressedFile = await canvasToFile(canvas, file.type, file.name, file.lastModified, quality)\n    }\n  }\n\n  return compressedFile\n}","import imageCompression from './index'\nimport compress from './image-compression'\n\nlet cnt = 0\nlet imageCompressionLibUrl\n\nfunction createWorker (f) {\n  return new Worker(URL.createObjectURL(new Blob([`(${f})()`])))\n}\n\nconst worker = createWorker(() => {\n  self.addEventListener('message', async (e) => {\n    const { file, id, imageCompressionLibUrl, options } = e.data\n    try {\n      // console.log('[worker] importScripts', imageCompressionLibUrl)\n      importScripts(imageCompressionLibUrl)\n      // console.log('[worker] self', self)\n      const compressedFile = await imageCompression(file, options)\n      self.postMessage({ file: compressedFile, id })\n    } catch (e) {\n      // console.error('[worker] error', e)\n      self.postMessage({ error: e.message, id })\n    }\n  })\n})\n\nfunction createSourceObject (str) {\n  return URL.createObjectURL(new Blob([str], { type: 'application/javascript' }))\n}\n\nexport function compressOnWebWorker (file, options) {\n  return new Promise(async (resolve, reject) => {\n    if (!imageCompressionLibUrl) {\n      imageCompressionLibUrl = createSourceObject(`\n    function imageCompression (){return (${imageCompression}).apply(null, arguments)}\n    \n    imageCompression.getDataUrlFromFile = ${imageCompression.getDataUrlFromFile}\n    imageCompression.getFilefromDataUrl = ${imageCompression.getFilefromDataUrl}\n    imageCompression.loadImage = ${imageCompression.loadImage}\n    imageCompression.drawImageInCanvas = ${imageCompression.drawImageInCanvas}\n    imageCompression.drawFileInCanvas = ${imageCompression.drawFileInCanvas}\n    imageCompression.canvasToFile = ${imageCompression.canvasToFile}\n    imageCompression.getExifOrientation = ${imageCompression.getExifOrientation}\n    imageCompression.handleMaxWidthOrHeight = ${imageCompression.handleMaxWidthOrHeight}\n    imageCompression.followExifOrientation = ${imageCompression.followExifOrientation}\n    \n    getDataUrlFromFile = imageCompression.getDataUrlFromFile\n    getFilefromDataUrl = imageCompression.getFilefromDataUrl\n    loadImage = imageCompression.loadImage\n    drawImageInCanvas = imageCompression.drawImageInCanvas\n    drawFileInCanvas = imageCompression.drawFileInCanvas\n    canvasToFile = imageCompression.canvasToFile\n    getExifOrientation = imageCompression.getExifOrientation\n    handleMaxWidthOrHeight = imageCompression.handleMaxWidthOrHeight\n    followExifOrientation = imageCompression.followExifOrientation\n\n    function compress (){return (${compress}).apply(null, arguments)}\n    `)\n      // imageCompressionLibUrl = new URL('../dist/browser-image-compression.js', window.location.href).href\n    }\n    let id = cnt++\n\n    function handler (e) {\n      if (e.data.id === id) {\n        worker.removeEventListener('message', handler)\n        if (e.data.error) {\n          reject(e.data.error)\n        }\n        resolve(e.data.file)\n      }\n    }\n\n    worker.addEventListener('message', handler)\n    worker.postMessage({ file, id, imageCompressionLibUrl, options })\n  })\n}","import compress from './image-compression'\nimport {\n  canvasToFile,\n  drawFileInCanvas,\n  drawImageInCanvas,\n  getDataUrlFromFile,\n  getFilefromDataUrl,\n  loadImage,\n  getExifOrientation,\n  handleMaxWidthOrHeight,\n  followExifOrientation\n} from './utils.js'\nimport { compressOnWebWorker } from './web-worker'\n\n/**\n * Compress an image file.\n *\n * @param {File} file\n * @param {Object} options - { maxSizeMB=Number.POSITIVE_INFINITY, maxWidthOrHeight, useWebWorker=true, maxIteration = 10, exifOrientation }\n * @param {number} [options.maxSizeMB=Number.POSITIVE_INFINITY]\n * @param {number} [options.maxWidthOrHeight=undefined] * @param {number} [options.maxWidthOrHeight=undefined]\n * @param {boolean} [options.useWebWorker=true]\n * @param {number} [options.maxIteration=10]\n * @param {number} [options.exifOrientation=] - default to be the exif orientation from the image file\n * @returns {Promise}\n */\nasync function imageCompression (file, options) {\n\n  let compressedFile\n\n  options.maxSizeMB = options.maxSizeMB || Number.POSITIVE_INFINITY\n  options.useWebWorker = typeof options.useWebWorker === 'boolean' ? options.useWebWorker : true\n\n  if (!(file instanceof Blob || file instanceof File)) {\n    throw new Error('The file given is not an instance of Blob or File')\n  } else if (!/^image/.test(file.type)) {\n    throw new Error('The file given is not an image')\n  }\n\n  // try run in web worker, fall back to run in main thread\n  const inWebWorker = typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope\n\n  // if (inWebWorker) {\n  //   console.log('run compression in web worker')\n  // } else {\n  //   console.log('run compression in main thread')\n  // }\n\n  if (options.useWebWorker && typeof Worker === 'function' && !inWebWorker) {\n    try {\n      // \"compressOnWebWorker\" is kind of like a recursion to call \"imageCompression\" again inside web worker\n      compressedFile = await compressOnWebWorker(file, options)\n    } catch (e) {\n      // console.error('run compression in web worker failed', e)\n      compressedFile = await compress(file, options)\n    }\n  } else {\n    compressedFile = await compress(file, options)\n  }\n\n  try {\n    compressedFile.name = file.name\n    compressedFile.lastModified = file.lastModified\n  } catch (e) {}\n\n  return compressedFile\n}\n\nimageCompression.getDataUrlFromFile = getDataUrlFromFile\nimageCompression.getFilefromDataUrl = getFilefromDataUrl\nimageCompression.loadImage = loadImage\nimageCompression.drawImageInCanvas = drawImageInCanvas\nimageCompression.drawFileInCanvas = drawFileInCanvas\nimageCompression.canvasToFile = canvasToFile\nimageCompression.getExifOrientation = getExifOrientation\nimageCompression.handleMaxWidthOrHeight = handleMaxWidthOrHeight\nimageCompression.followExifOrientation = followExifOrientation\n\nexport default imageCompression\n"],"names":["reader","onerror","e","Promise","dataurl","split","bstr","length","filename","Blob","resolve","loadImage","quality","$return","$error","type","fileName","offset","view","getUint32","getUint16","little","file","maxWidthOrHeight","options","needToHandle","img","canvas","ctx","width","transform","compress","maxIteration","then","$await_9","name","cnt","imageCompression","getDataUrlFromFile","drawImageInCanvas","getExifOrientation","getFilefromDataUrl","drawFileInCanvas","canvasToFile","handleMaxWidthOrHeight","followExifOrientation"],"mappings":"6HAwBEA,EAAAC,QAAO,SAAAC,qJAYH,IAAAC,gCACAC,EAAAC,qDACAC,EAAKC,wEAaqBC,wBAE5B,IAAAC,yBACAD,mBAGJE,gBAgBcC,2zBAiCd,mCAAkFC,kEAA3E,IAAAT,QAAA,SAAAU,EAAAC,iGAEDC,yDAC4BC,2lBAsBFC,YACtBC,EAAAC,YAA4B,6DAI5BD,EAAAE,iBAAAC,uEAMAH,EAAAE,8DAMWlB,wBACXoB,qEAcNC,EAAiBC,mBACjBC,kKAkBSC,6CAIPC,kEA2BAC,qBAEFC,IAAAA,kCAOFF,EAAAE,qDAGiDD,EAAAE,6EACvCF,EAAAE,UAAc,EAAG,EAAG,uBAAaF,EAAAE,2EACjCF,EAAAE,UAAc,4BAAyBF,EAAAE,8ECvMnCC,8EAGFP,EAAAQ,+SAUmBC,KAAA,SAAAC,gBAAAA,8eAULC,w5BC/C5B,MAAIC,UAIJ,uYAaMlC,ukBAyCgBmC,iBAAAC,6OAGVD,iBAAAE,+OAGJF,iBAAAG,+gECNWL,mHAMnBE,iBAAAI,mBAAsCA,mBACtCJ,iBAAA1B,oBACA0B,iBAAAE,oCACAF,iBAAAK,iBAAAA,iBACAL,iBAAAM,0BACAN,iBAAAG,sCACAH,iBAAAO,8CACAP,iBAAAQ,sBAAAA"}
\ No newline at end of file
diff --git a/example/basic.html b/example/basic.html
index 0692582..6c14316 100644
--- a/example/basic.html
+++ b/example/basic.html
@@ -30,7 +30,7 @@
     }
     logDom.innerHTML = 'Source image size:' + (file.size / 1024 / 1024).toFixed(2) + 'mb'
     console.log('input', file)
-    var options = { maxSizeMB: 1, useWebWorker: useWebWorker }
+    var options = { maxSizeMB: 1, maxWidthOrHeight: 720, useWebWorker: useWebWorker }
     const output = await imageCompression(file, options)
     logDom.innerHTML += ', output size:' + (output.size / 1024 / 1024).toFixed(2) + 'mb'
     console.log('output', output)
@@ -49,6 +49,6 @@
     })
   }
 
-
+
 
-
\ No newline at end of file
+
diff --git a/example/development.html b/example/development.html
new file mode 100644
index 0000000..970ce5f
--- /dev/null
+++ b/example/development.html
@@ -0,0 +1,54 @@
+
+
+
+
look at console to see logs

+

+

+    
+    

+

+

+

+    
+    

+
+

+
+
+
+
diff --git a/lib/utils.js b/lib/utils.js
index e0aa467..646eaea 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -207,8 +207,8 @@ export function handleMaxWidthOrHeight (img, canvas, options) {
 export function followExifOrientation (img, canvas, exifOrientation) {
   const ctx = canvas.getContext('2d')
 
-  const width = img.width
-  const height = img.height
+  const width = canvas.width
+  const height = canvas.height
 
   // set proper canvas dimensions before transform & export
   if (4 < exifOrientation && exifOrientation < 9) {
@@ -231,7 +231,7 @@ export function followExifOrientation (img, canvas, exifOrientation) {
     default: break;
   }
 
-  ctx.drawImage(img, 0, 0)
+  ctx.drawImage(img, 0, 0, canvas.width, canvas.height)
 
   return canvas
 }
\ No newline at end of file
diff --git a/package.json b/package.json
index a011aab..6d3ed08 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "browser-image-compression",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Compress images in the browser",
   "main": "dist/browser-image-compression.js",
   "module": "dist/browser-image-compression.mjs",
diff --git a/test/index.spec.js b/test/index.spec.js
index 4364acc..a41fee7 100644
--- a/test/index.spec.js
+++ b/test/index.spec.js
@@ -99,6 +99,49 @@ describe('Tests', function () {
     restore()
   })
 
+  it('resize jpg image file', async () => {
+    const restore = setupCustomFileAPI()
+
+    const file = new File(JPG_PATH)
+    // const file = new File(JPG_FILE, JPG_NAME)
+    // Object.defineProperty(file, 'type', { value: 'image/jpeg' })
+
+    const maxWidthOrHeight = 720
+
+    const compressedFile = await imageCompression(file, { maxWidthOrHeight, useWebWorker: false, exifOrientation: -2 })
+
+    restore()
+
+    const temp = await drawFileInCanvas(compressedFile)
+    const img = temp[0]
+    expect(img.width).to.be.at.most(maxWidthOrHeight)
+    expect(img.height).to.be.at.most(maxWidthOrHeight)
+
+  })
+
+  it('compress and resize jpg image file', async () => {
+    const restore = setupCustomFileAPI()
+
+    const file = new File(JPG_PATH)
+    // const file = new File(JPG_FILE, JPG_NAME)
+    // Object.defineProperty(file, 'type', { value: 'image/jpeg' })
+
+    const maxSizeMB = 1
+    const maxSizeByte = maxSizeMB * 1024 * 1024
+    const maxWidthOrHeight = 720
+
+    const compressedFile = await imageCompression(file, { maxSizeMB, maxWidthOrHeight, useWebWorker: false, exifOrientation: -2 })
+    restore()
+
+    expect(compressedFile.size).to.be.at.most(maxSizeByte)
+
+    const temp = await drawFileInCanvas(compressedFile)
+    const img = temp[0]
+    expect(img.width).to.be.at.most(maxWidthOrHeight)
+    expect(img.height).to.be.at.most(maxWidthOrHeight)
+
+  })
+
   it('compress png image file', async () => {
     const restore = setupCustomFileAPI()
 
@@ -113,6 +156,46 @@ describe('Tests', function () {
     restore()
   })
 
+  it('resize png image file', async () => {
+    const restore = setupCustomFileAPI()
+
+    const file = new File(PNG_PATH)
+
+    const maxWidthOrHeight = 720
+
+    const compressedFile = await imageCompression(file, { maxWidthOrHeight, useWebWorker: false, exifOrientation: -2 })
+    restore()
+
+    const temp = await drawFileInCanvas(compressedFile)
+
+    const img = temp[0]
+    expect(img.width).to.be.at.most(maxWidthOrHeight)
+    expect(img.height).to.be.at.most(maxWidthOrHeight)
+
+  })
+
+  it('compress and resize png image file', async () => {
+    const restore = setupCustomFileAPI()
+
+    const file = new File(PNG_PATH)
+
+    const maxSizeMB = 1
+    const maxSizeByte = maxSizeMB * 1024 * 1024
+    const maxWidthOrHeight = 720
+
+    const compressedFile = await imageCompression(file, { maxSizeMB, maxWidthOrHeight, useWebWorker: false, exifOrientation: -2 })
+    restore()
+
+    expect(compressedFile.size).to.be.at.most(maxSizeByte)
+
+    const temp = await drawFileInCanvas(compressedFile)
+
+    const img = temp[0]
+    expect(img.width).to.be.at.most(maxWidthOrHeight)
+    expect(img.height).to.be.at.most(maxWidthOrHeight)
+
+  })
+
   it('fails if wrong file provided', async () => {
     const file = undefined