diff --git a/etools-upload.d.ts b/etools-upload.d.ts
index d97eed2..273ef15 100644
--- a/etools-upload.d.ts
+++ b/etools-upload.d.ts
@@ -16,7 +16,7 @@ import {PolymerElement, html} from '@polymer/polymer';
 
 import {CommonMixin} from './common-mixin.js';
 
-import {RequestHelper} from './request-helper.js';
+import {RequestHelperMixin} from './request-helper-mixin';
 
 /**
  * `etools-upload`
diff --git a/etools-upload.js b/etools-upload.js
index 1ee93a1..aec122f 100644
--- a/etools-upload.js
+++ b/etools-upload.js
@@ -10,7 +10,7 @@ import '@polymer/paper-spinner/paper-spinner.js';
 import {CommonStyles} from "./common-styles.js";
 
 import {CommonMixin} from './common-mixin.js';
-import {RequestHelper} from './request-helper-mixin.js';
+import {RequestHelperMixin} from './request-helper-mixin.js';
 import {abortActiveRequests} from '@unicef-polymer/etools-ajax/upload-helper';
 
 /**
@@ -21,7 +21,7 @@ import {abortActiveRequests} from '@unicef-polymer/etools-ajax/upload-helper';
  * @polymer
  * @demo demo/index.html
  */
-class EtoolsUpload extends RequestHelper(CommonMixin(PolymerElement)) {
+class EtoolsUpload extends RequestHelperMixin(CommonMixin(PolymerElement)) {
   static get template() {
     // language=HTML
     return html`
@@ -361,6 +361,7 @@ class EtoolsUpload extends RequestHelper(CommonMixin(PolymerElement)) {
     if (typeof this.fileUrl === 'undefined') {
       this.resetStatus();
       this.invalid = false;
+      return;
     }
     if (this.autoValidate) {
       this.validate();
diff --git a/package-lock.json b/package-lock.json
index 664d6c2..c4dd7b2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,29 +1,28 @@
 {
   "name": "@unicef-polymer/etools-upload",
-  "version": "3.1.6",
+  "version": "3.1.9",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
     "@babel/code-frame": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.0.0.tgz",
-      "integrity": "sha512-OfC2uemaknXr87bdLUkWog7nYuliM9Ij5HUcajsVcMCpQrcLmtxRbVFTIqmcSkSeYRBFBRxs2FiUqFJDLdiebA==",
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.8.3.tgz",
+      "integrity": "sha512-a9gxpmdXtZEInkCSHUJDLHZVBgb1QS0jhss4cPP93EW7s+uC5bikET2twEF3KV+7rDblJcmNvTR7VJejqd2C2g==",
       "dev": true,
       "requires": {
-        "@babel/highlight": "7.0.0"
+        "@babel/highlight": "^7.8.3"
       }
     },
     "@babel/generator": {
-      "version": "7.3.4",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.3.4.tgz",
-      "integrity": "sha512-8EXhHRFqlVVWXPezBW5keTiQi/rJMQTg/Y9uVCEZ0CAF3PKtCCaVRnp64Ii1ujhkoDhhF1fVsImoN4yJ2uz4Wg==",
+      "version": "7.9.6",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.9.6.tgz",
+      "integrity": "sha512-+htwWKJbH2bL72HRluF8zumBxzuX0ZZUFl3JLNyoUjM/Ho8wnVpPXM6aUz8cfKDqQ/h7zHqKt4xzJteUosckqQ==",
       "dev": true,
       "requires": {
-        "@babel/types": "7.3.4",
-        "jsesc": "2.5.2",
-        "lodash": "4.17.11",
-        "source-map": "0.5.7",
-        "trim-right": "1.0.1"
+        "@babel/types": "^7.9.6",
+        "jsesc": "^2.5.1",
+        "lodash": "^4.17.13",
+        "source-map": "^0.5.0"
       },
       "dependencies": {
         "source-map": {
@@ -35,88 +34,94 @@
       }
     },
     "@babel/helper-function-name": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.1.0.tgz",
-      "integrity": "sha512-A95XEoCpb3TO+KZzJ4S/5uW5fNe26DjBGqf1o9ucyLyCmi1dXq/B3c8iaWTfBk3VvetUxl16e8tIrd5teOCfGw==",
+      "version": "7.9.5",
+      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.9.5.tgz",
+      "integrity": "sha512-JVcQZeXM59Cd1qanDUxv9fgJpt3NeKUaqBqUEvfmQ+BCOKq2xUgaWZW2hr0dkbyJgezYuplEoh5knmrnS68efw==",
       "dev": true,
       "requires": {
-        "@babel/helper-get-function-arity": "7.0.0",
-        "@babel/template": "7.2.2",
-        "@babel/types": "7.3.4"
+        "@babel/helper-get-function-arity": "^7.8.3",
+        "@babel/template": "^7.8.3",
+        "@babel/types": "^7.9.5"
       }
     },
     "@babel/helper-get-function-arity": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.0.0.tgz",
-      "integrity": "sha512-r2DbJeg4svYvt3HOS74U4eWKsUAMRH01Z1ds1zx8KNTPtpTL5JAsdFv8BNyOpVqdFhHkkRDIg5B4AsxmkjAlmQ==",
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.8.3.tgz",
+      "integrity": "sha512-FVDR+Gd9iLjUMY1fzE2SR0IuaJToR4RkCDARVfsBBPSP53GEqSFjD8gNyxg246VUyc/ALRxFaAK8rVG7UT7xRA==",
       "dev": true,
       "requires": {
-        "@babel/types": "7.3.4"
+        "@babel/types": "^7.8.3"
       }
     },
     "@babel/helper-split-export-declaration": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.0.0.tgz",
-      "integrity": "sha512-MXkOJqva62dfC0w85mEf/LucPPS/1+04nmmRMPEBUB++hiiThQ2zPtX/mEWQ3mtzCEjIJvPY8nuwxXtQeQwUag==",
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.8.3.tgz",
+      "integrity": "sha512-3x3yOeyBhW851hroze7ElzdkeRXQYQbFIb7gLK1WQYsw2GWDay5gAJNw1sWJ0VFP6z5J1whqeXH/WCdCjZv6dA==",
       "dev": true,
       "requires": {
-        "@babel/types": "7.3.4"
+        "@babel/types": "^7.8.3"
       }
     },
+    "@babel/helper-validator-identifier": {
+      "version": "7.9.5",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.9.5.tgz",
+      "integrity": "sha512-/8arLKUFq882w4tWGj9JYzRpAlZgiWUJ+dtteNTDqrRBz9Iguck9Rn3ykuBDoUwh2TO4tSAJlrxDUOXWklJe4g==",
+      "dev": true
+    },
     "@babel/highlight": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.0.0.tgz",
-      "integrity": "sha512-UFMC4ZeFC48Tpvj7C8UgLvtkaUuovQX+5xNWrsIoMG8o2z+XFKjKaN9iVmS84dPwVN00W4wPmqvYoZF3EGAsfw==",
+      "version": "7.9.0",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.9.0.tgz",
+      "integrity": "sha512-lJZPilxX7Op3Nv/2cvFdnlepPXDxi29wxteT57Q965oc5R9v86ztx0jfxVrTcBk8C2kcPkkDa2Z4T3ZsPPVWsQ==",
       "dev": true,
       "requires": {
-        "chalk": "2.4.2",
-        "esutils": "2.0.2",
-        "js-tokens": "4.0.0"
+        "@babel/helper-validator-identifier": "^7.9.0",
+        "chalk": "^2.0.0",
+        "js-tokens": "^4.0.0"
       }
     },
     "@babel/parser": {
-      "version": "7.3.4",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.3.4.tgz",
-      "integrity": "sha512-tXZCqWtlOOP4wgCp6RjRvLmfuhnqTLy9VHwRochJBCP2nDm27JnnuFEnXFASVyQNHk36jD1tAammsCEEqgscIQ==",
+      "version": "7.9.6",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.9.6.tgz",
+      "integrity": "sha512-AoeIEJn8vt+d/6+PXDRPaksYhnlbMIiejioBZvvMQsOjW/JYK6k/0dKnvvP3EhK5GfMBWDPtrxRtegWdAcdq9Q==",
       "dev": true
     },
     "@babel/template": {
-      "version": "7.2.2",
-      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.2.2.tgz",
-      "integrity": "sha512-zRL0IMM02AUDwghf5LMSSDEz7sBCO2YnNmpg3uWTZj/v1rcG2BmQUvaGU8GhU8BvfMh1k2KIAYZ7Ji9KXPUg7g==",
+      "version": "7.8.6",
+      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.8.6.tgz",
+      "integrity": "sha512-zbMsPMy/v0PWFZEhQJ66bqjhH+z0JgMoBWuikXybgG3Gkd/3t5oQ1Rw2WQhnSrsOmsKXnZOx15tkC4qON/+JPg==",
       "dev": true,
       "requires": {
-        "@babel/code-frame": "7.0.0",
-        "@babel/parser": "7.3.4",
-        "@babel/types": "7.3.4"
+        "@babel/code-frame": "^7.8.3",
+        "@babel/parser": "^7.8.6",
+        "@babel/types": "^7.8.6"
       }
     },
     "@babel/traverse": {
-      "version": "7.3.4",
-      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.3.4.tgz",
-      "integrity": "sha512-TvTHKp6471OYEcE/91uWmhR6PrrYywQntCHSaZ8CM8Vmp+pjAusal4nGB2WCCQd0rvI7nOMKn9GnbcvTUz3/ZQ==",
+      "version": "7.9.6",
+      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.9.6.tgz",
+      "integrity": "sha512-b3rAHSjbxy6VEAvlxM8OV/0X4XrG72zoxme6q1MOoe2vd0bEc+TwayhuC1+Dfgqh1QEG+pj7atQqvUprHIccsg==",
       "dev": true,
       "requires": {
-        "@babel/code-frame": "7.0.0",
-        "@babel/generator": "7.3.4",
-        "@babel/helper-function-name": "7.1.0",
-        "@babel/helper-split-export-declaration": "7.0.0",
-        "@babel/parser": "7.3.4",
-        "@babel/types": "7.3.4",
-        "debug": "4.1.1",
-        "globals": "11.11.0",
-        "lodash": "4.17.11"
+        "@babel/code-frame": "^7.8.3",
+        "@babel/generator": "^7.9.6",
+        "@babel/helper-function-name": "^7.9.5",
+        "@babel/helper-split-export-declaration": "^7.8.3",
+        "@babel/parser": "^7.9.6",
+        "@babel/types": "^7.9.6",
+        "debug": "^4.1.0",
+        "globals": "^11.1.0",
+        "lodash": "^4.17.13"
       }
     },
     "@babel/types": {
-      "version": "7.3.4",
-      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.3.4.tgz",
-      "integrity": "sha512-WEkp8MsLftM7O/ty580wAmZzN1nDmCACc5+jFzUt+GUFNNIi3LdRlueYz0YIlmJhlZx1QYDMZL5vdWCL0fNjFQ==",
+      "version": "7.9.6",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.9.6.tgz",
+      "integrity": "sha512-qxXzvBO//jO9ZnoasKF1uJzHd2+M6Q2ZPIVfnFps8JJvXy0ZBbwbNOmE6SGIY5XOY6d1Bo5lb9d9RJ8nv3WSeA==",
       "dev": true,
       "requires": {
-        "esutils": "2.0.2",
-        "lodash": "4.17.11",
-        "to-fast-properties": "2.0.0"
+        "@babel/helper-validator-identifier": "^7.9.5",
+        "lodash": "^4.17.13",
+        "to-fast-properties": "^2.0.0"
       }
     },
     "@polymer/font-roboto": {
@@ -125,30 +130,30 @@
       "integrity": "sha512-tx5TauYSmzsIvmSqepUPDYbs4/Ejz2XbZ1IkD7JEGqkdNUJlh+9KU85G56Tfdk/xjEZ8zorFfN09OSwiMrIQWA=="
     },
     "@polymer/gen-typescript-declarations": {
-      "version": "1.6.1",
-      "resolved": "https://registry.npmjs.org/@polymer/gen-typescript-declarations/-/gen-typescript-declarations-1.6.1.tgz",
-      "integrity": "sha512-8CtIwwhxfMCdvtKuR/IphH9bvJGBIVP0dQdKA8Tua1oCTOBkGgG/fVY890hWCL2tz5CursQGq37UKY0+89Ot2g==",
+      "version": "1.6.2",
+      "resolved": "https://registry.npmjs.org/@polymer/gen-typescript-declarations/-/gen-typescript-declarations-1.6.2.tgz",
+      "integrity": "sha512-uXhwmPtnp2W4VQdBidHxadlZaW/Tahf1BxDwCpV0YwFPcH7BAD3WSW3cLvktFtOPPPTwKQoGU4HcMRzTlVYk9A==",
       "dev": true,
       "requires": {
-        "@babel/types": "7.3.4",
-        "@types/command-line-args": "5.0.0",
-        "@types/command-line-usage": "5.0.1",
+        "@babel/types": "^7.0.0-beta.42",
+        "@types/command-line-args": "^5.0.0",
+        "@types/command-line-usage": "^5.0.1",
         "@types/doctrine": "0.0.3",
-        "@types/fs-extra": "5.0.5",
-        "@types/glob": "5.0.36",
-        "@types/parse5": "2.2.34",
-        "babylon": "7.0.0-beta.47",
-        "command-line-args": "5.0.2",
-        "command-line-usage": "5.0.5",
-        "doctrine": "2.1.0",
-        "escodegen": "1.11.1",
-        "fs-extra": "6.0.1",
-        "glob": "7.1.3",
-        "minimatch": "3.0.4",
-        "polymer-analyzer": "3.2.2",
-        "source-map-support": "0.5.10",
-        "typescript": "3.3.3333",
-        "vscode-uri": "1.0.6"
+        "@types/fs-extra": "^5.0.0",
+        "@types/glob": "^5.0.35",
+        "@types/parse5": "^2.2.34",
+        "babylon": "^7.0.0-beta.42",
+        "command-line-args": "^5.0.1",
+        "command-line-usage": "^5.0.2",
+        "doctrine": "^2.0.0",
+        "escodegen": "^1.9.0",
+        "fs-extra": "^6.0.1",
+        "glob": "^7.1.2",
+        "minimatch": "^3.0.4",
+        "polymer-analyzer": "^3.0.2",
+        "source-map-support": "^0.5.9",
+        "typescript": "^3.0.1",
+        "vscode-uri": "=1.0.6"
       }
     },
     "@polymer/iron-a11y-announcer": {
@@ -156,7 +161,7 @@
       "resolved": "https://registry.npmjs.org/@polymer/iron-a11y-announcer/-/iron-a11y-announcer-3.0.2.tgz",
       "integrity": "sha512-LqnMF39mXyxSSRbTHRzGbcJS8nU0NVTo2raBOgOlpxw5yfGJUVcwaTJ/qy5NtWCZLRfa4suycf0oAkuUjHTXHQ==",
       "requires": {
-        "@polymer/polymer": "3.2.0"
+        "@polymer/polymer": "^3.0.0"
       }
     },
     "@polymer/iron-a11y-keys-behavior": {
@@ -164,7 +169,7 @@
       "resolved": "https://registry.npmjs.org/@polymer/iron-a11y-keys-behavior/-/iron-a11y-keys-behavior-3.0.1.tgz",
       "integrity": "sha512-lnrjKq3ysbBPT/74l0Fj0U9H9C35Tpw2C/tpJ8a+5g8Y3YJs1WSZYnEl1yOkw6sEyaxOq/1DkzH0+60gGu5/PQ==",
       "requires": {
-        "@polymer/polymer": "3.2.0"
+        "@polymer/polymer": "^3.0.0"
       }
     },
     "@polymer/iron-ajax": {
@@ -172,18 +177,18 @@
       "resolved": "https://registry.npmjs.org/@polymer/iron-ajax/-/iron-ajax-3.0.1.tgz",
       "integrity": "sha512-7+TPEAfWsRdhj1Y8UeF1759ktpVu+c3sG16rJiUC3wF9+woQ9xI1zUm2d59i7Yc3aDEJrR/Q8Y262KlOvyGVNg==",
       "requires": {
-        "@polymer/polymer": "3.2.0"
+        "@polymer/polymer": "^3.0.0"
       }
     },
     "@polymer/iron-autogrow-textarea": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/@polymer/iron-autogrow-textarea/-/iron-autogrow-textarea-3.0.1.tgz",
-      "integrity": "sha512-FgSL7APrOSL9Vu812sBCFlQ17hvnJsBAV2C2e1UAiaHhB+dyfLq8gGdGUpqVWuGJ50q4Y/49QwCNnLf85AdVYA==",
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/@polymer/iron-autogrow-textarea/-/iron-autogrow-textarea-3.0.3.tgz",
+      "integrity": "sha512-5r0VkWrIlm0JIp5E5wlnvkw7slK72lFRZXncmrsLZF+6n1dg2rI8jt7xpFzSmUWrqpcyXwyKaGaDvUjl3j4JLA==",
       "requires": {
-        "@polymer/iron-behaviors": "3.0.1",
-        "@polymer/iron-flex-layout": "3.0.1",
-        "@polymer/iron-validatable-behavior": "3.0.1",
-        "@polymer/polymer": "3.2.0"
+        "@polymer/iron-behaviors": "^3.0.0-pre.26",
+        "@polymer/iron-flex-layout": "^3.0.0-pre.26",
+        "@polymer/iron-validatable-behavior": "^3.0.0-pre.26",
+        "@polymer/polymer": "^3.0.0"
       }
     },
     "@polymer/iron-behaviors": {
@@ -191,8 +196,8 @@
       "resolved": "https://registry.npmjs.org/@polymer/iron-behaviors/-/iron-behaviors-3.0.1.tgz",
       "integrity": "sha512-IMEwcv1lhf1HSQxuyWOUIL0lOBwmeaoSTpgCJeP9IBYnuB1SPQngmfRuHKgK6/m9LQ9F9miC7p3HeQQUdKAE0w==",
       "requires": {
-        "@polymer/iron-a11y-keys-behavior": "3.0.1",
-        "@polymer/polymer": "3.2.0"
+        "@polymer/iron-a11y-keys-behavior": "^3.0.0-pre.26",
+        "@polymer/polymer": "^3.0.0"
       }
     },
     "@polymer/iron-checked-element-behavior": {
@@ -200,23 +205,23 @@
       "resolved": "https://registry.npmjs.org/@polymer/iron-checked-element-behavior/-/iron-checked-element-behavior-3.0.1.tgz",
       "integrity": "sha512-aDr0cbCNVq49q+pOqa6CZutFh+wWpwPMLpEth9swx+GkAj+gCURhuQkaUYhIo5f2egDbEioR1aeHMnPlU9dQZA==",
       "requires": {
-        "@polymer/iron-form-element-behavior": "3.0.1",
-        "@polymer/iron-validatable-behavior": "3.0.1",
-        "@polymer/polymer": "3.2.0"
+        "@polymer/iron-form-element-behavior": "^3.0.0-pre.26",
+        "@polymer/iron-validatable-behavior": "^3.0.0-pre.26",
+        "@polymer/polymer": "^3.0.0"
       }
     },
     "@polymer/iron-demo-helpers": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/@polymer/iron-demo-helpers/-/iron-demo-helpers-3.0.2.tgz",
-      "integrity": "sha512-VqGEIOEXPgx9G6uLfvnzXVib6sE6lJENV3gywoBTstrMCrFCSGpmTMVAovpHyoDw8Ceu6LeoVuMsxaT1mCEirg==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@polymer/iron-demo-helpers/-/iron-demo-helpers-3.1.0.tgz",
+      "integrity": "sha512-C+U9ghRnjluJNLIga7r30YGNuQeCu7E7mOOcjgWOL/bMfWvrnbr2TcYoO4DXHO6NdUfV6daGtRA1VwG3d8H39g==",
       "dev": true,
       "requires": {
-        "@polymer/font-roboto": "3.0.2",
-        "@polymer/iron-flex-layout": "3.0.1",
-        "@polymer/iron-location": "3.0.1",
-        "@polymer/marked-element": "3.0.1",
-        "@polymer/polymer": "3.2.0",
-        "@polymer/prism-element": "3.0.1"
+        "@polymer/font-roboto": "^3.0.0-pre.25",
+        "@polymer/iron-flex-layout": "^3.0.0-pre.25",
+        "@polymer/iron-location": "^3.0.0-pre.25",
+        "@polymer/marked-element": "^3.0.0-pre.25",
+        "@polymer/polymer": "^3.0.0",
+        "@polymer/prism-element": "^3.0.0-pre.25"
       }
     },
     "@polymer/iron-flex-layout": {
@@ -224,7 +229,7 @@
       "resolved": "https://registry.npmjs.org/@polymer/iron-flex-layout/-/iron-flex-layout-3.0.1.tgz",
       "integrity": "sha512-7gB869czArF+HZcPTVSgvA7tXYFze9EKckvM95NB7SqYF+NnsQyhoXgKnpFwGyo95lUjUW9TFDLUwDXnCYFtkw==",
       "requires": {
-        "@polymer/polymer": "3.2.0"
+        "@polymer/polymer": "^3.0.0"
       }
     },
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@@ -232,7 +237,7 @@
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+          }
+        },
+        "typical": {
+          "version": "2.6.1",
+          "resolved": "https://registry.npmjs.org/typical/-/typical-2.6.1.tgz",
+          "integrity": "sha1-XAgOXWYcu+OCWdLnCjxyU+hziB0=",
+          "dev": true
+        }
       }
     },
     "text-table": {
@@ -14479,7 +16907,7 @@
     },
     "through": {
       "version": "2.3.8",
-      "resolved": "http://registry.npmjs.org/through/-/through-2.3.8.tgz",
+      "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
       "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=",
       "dev": true
     },
@@ -14496,7 +16924,7 @@
       "integrity": "sha512-jRCJlojKnZ3addtTOjdIqoRuPEKBvNXcGYqzO6zWZX8KfKEpnGY5jfggJQ3EjKuu8D4bJRr0y+cYJFmYbImXGw==",
       "dev": true,
       "requires": {
-        "os-tmpdir": "1.0.2"
+        "os-tmpdir": "~1.0.2"
       }
     },
     "to-fast-properties": {
@@ -14511,7 +16939,7 @@
       "integrity": "sha1-qLE/1r/SSJUZZ0zN5VujaTtwbQk=",
       "dev": true,
       "requires": {
-        "punycode": "2.1.1"
+        "punycode": "^2.1.0"
       }
     },
     "trim-right": {
@@ -14521,9 +16949,9 @@
       "dev": true
     },
     "tslib": {
-      "version": "1.9.3",
-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.9.3.tgz",
-      "integrity": "sha512-4krF8scpejhaOgqzBEcGM7yDIEfi0/8+8zDRZhNZZ2kjmHJ4hv3zCbQWxoJGz1iw5U0Jl0nma13xzHXcncMavQ==",
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.11.1.tgz",
+      "integrity": "sha512-aZW88SY8kQbU7gpV19lN24LtXh/yD4ZZg6qieAJDDg+YBsJcSmLGK9QpnUjAKVG/xefmvJGd1WUmfpT/g6AJGA==",
       "dev": true
     },
     "type-check": {
@@ -14532,7 +16960,7 @@
       "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
       "dev": true,
       "requires": {
-        "prelude-ls": "1.1.2"
+        "prelude-ls": "~1.1.2"
       }
     },
     "type-detect": {
@@ -14542,21 +16970,21 @@
       "dev": true
     },
     "type-fest": {
-      "version": "0.5.2",
-      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.5.2.tgz",
-      "integrity": "sha512-DWkS49EQKVX//Tbupb9TFa19c7+MK1XmzkrZUR8TAktmE/DizXoaoJV6TZ/tSIPXipqNiRI6CyAe7x69Jb6RSw==",
+      "version": "0.8.1",
+      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.8.1.tgz",
+      "integrity": "sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA==",
       "dev": true
     },
     "typescript": {
-      "version": "3.3.3333",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.3.3333.tgz",
-      "integrity": "sha512-JjSKsAfuHBE/fB2oZ8NxtRTk5iGcg6hkYXMnZ3Wc+b2RSqejEqTaem11mHASMnFilHrax3sLK0GDzcJrekZYLw==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "typical": {
-      "version": "2.6.1",
-      "resolved": "https://registry.npmjs.org/typical/-/typical-2.6.1.tgz",
-      "integrity": "sha1-XAgOXWYcu+OCWdLnCjxyU+hziB0=",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/typical/-/typical-4.0.0.tgz",
+      "integrity": "sha512-VAH4IvQ7BDFYglMd7BPRDfLgxZZX4O4TFcRDA6EN5X7erNJJq+McIEp8np9aVtxrCJ6qx4GTYVfOWNjcqwZgRw==",
       "dev": true
     },
     "universalify": {
@@ -14571,24 +16999,23 @@
       "integrity": "sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==",
       "dev": true,
       "requires": {
-        "punycode": "2.1.1"
+        "punycode": "^2.1.0"
       }
     },
     "util": {
-      "version": "0.11.1",
-      "resolved": "https://registry.npmjs.org/util/-/util-0.11.1.tgz",
-      "integrity": "sha512-HShAsny+zS2TZfaXxD9tYj4HQGlBezXZMZuM/S5PKLLoZkShZiGk9o5CzukI1LVHZvjdvZ2Sj1aW/Ndn2NB/HQ==",
+      "version": "0.12.3",
+      "resolved": "https://registry.npmjs.org/util/-/util-0.12.3.tgz",
+      "integrity": "sha512-I8XkoQwE+fPQEhy9v012V+TSdH2kp9ts29i20TaaDUXsg7x/onePbhFJUExBfv/2ay1ZOp/Vsm3nDlmnFGSAog==",
       "dev": true,
       "requires": {
-        "inherits": "2.0.3"
+        "inherits": "^2.0.3",
+        "is-arguments": "^1.0.4",
+        "is-generator-function": "^1.0.7",
+        "is-typed-array": "^1.1.3",
+        "safe-buffer": "^5.1.2",
+        "which-typed-array": "^1.1.2"
       }
     },
-    "util-deprecate": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
-      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
-      "dev": true
-    },
     "v8-compile-cache": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.1.0.tgz",
@@ -14607,32 +17034,32 @@
       "integrity": "sha512-23rbZwBh/DxWU36htJN9lsyBq3NxgVbuyMUq7fgFP6ZVTel+uFWO6LPXPoZQ6VyvXvlUYLE5PxY+ZdJ88a4COw==",
       "dev": true,
       "requires": {
-        "@polymer/polymer": "3.2.0",
-        "@polymer/sinonjs": "1.17.1",
-        "@polymer/test-fixture": "3.0.0-pre.21",
-        "@webcomponents/webcomponentsjs": "2.2.7",
-        "accessibility-developer-tools": "2.12.0",
-        "async": "1.5.2",
-        "chai": "3.5.0",
-        "lodash": "3.10.1",
-        "mocha": "3.5.3",
-        "sinon": "1.17.7",
-        "sinon-chai": "2.14.0",
-        "stacky": "1.3.1"
+        "@polymer/polymer": "^3.0.0",
+        "@polymer/sinonjs": "^1.14.1",
+        "@polymer/test-fixture": "^3.0.0-pre.1",
+        "@webcomponents/webcomponentsjs": "^2.0.0",
+        "accessibility-developer-tools": "^2.12.0",
+        "async": "^1.5.2",
+        "chai": "^3.5.0",
+        "lodash": "^3.10.1",
+        "mocha": "^3.4.2",
+        "sinon": "^1.17.1",
+        "sinon-chai": "^2.10.0",
+        "stacky": "^1.3.1"
       },
       "dependencies": {
         "lodash": {
           "version": "3.10.1",
-          "resolved": "http://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
           "integrity": "sha1-W/Rejkm6QYnhfUgnid/RW9FAt7Y=",
           "dev": true
         }
       }
     },
     "web-animations-js": {
-      "version": "2.3.1",
-      "resolved": "https://registry.npmjs.org/web-animations-js/-/web-animations-js-2.3.1.tgz",
-      "integrity": "sha1-Om2bwVGWN3qQ+OKAP6UmIWWwRRA="
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/web-animations-js/-/web-animations-js-2.3.2.tgz",
+      "integrity": "sha512-TOMFWtQdxzjWp8qx4DAraTWTsdhxVSiWa6NkPFSaPtZ1diKUxTn4yTix73A1euG1WbSOMMPcY51cnjTIHrGtDA=="
     },
     "webidl-conversions": {
       "version": "4.0.2",
@@ -14646,9 +17073,9 @@
       "integrity": "sha512-rhRZRqx/TLJQWUpQ6bmrt2UV4f0HCQ463yQuONJqC6fO2VoEb1pTYddbe59SkYq87aoM5A3bdhMZiUiVws+fzQ==",
       "dev": true,
       "requires": {
-        "lodash.sortby": "4.7.0",
-        "tr46": "1.0.1",
-        "webidl-conversions": "4.0.2"
+        "lodash.sortby": "^4.7.0",
+        "tr46": "^1.0.1",
+        "webidl-conversions": "^4.0.2"
       }
     },
     "which": {
@@ -14657,13 +17084,27 @@
       "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
       "dev": true,
       "requires": {
-        "isexe": "2.0.0"
+        "isexe": "^2.0.0"
       }
     },
-    "wordwrap": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
-      "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
+    "which-typed-array": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/which-typed-array/-/which-typed-array-1.1.2.tgz",
+      "integrity": "sha512-KT6okrd1tE6JdZAy3o2VhMoYPh3+J6EMZLyrxBQsZflI1QCZIxMrIYLkosd8Twf+YfknVIHmYQPgJt238p8dnQ==",
+      "dev": true,
+      "requires": {
+        "available-typed-arrays": "^1.0.2",
+        "es-abstract": "^1.17.5",
+        "foreach": "^2.0.5",
+        "function-bind": "^1.1.1",
+        "has-symbols": "^1.0.1",
+        "is-typed-array": "^1.1.3"
+      }
+    },
+    "word-wrap": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",
+      "integrity": "sha512-Hz/mrNwitNRh/HUAtM/VT/5VH+ygD6DV7mYKZAtHOrbs8U7lvPS6xf7EJKMF0uW1KJCl0H701g3ZGus+muE5vQ==",
       "dev": true
     },
     "wordwrapjs": {
@@ -14672,8 +17113,16 @@
       "integrity": "sha512-mO8XtqyPvykVCsrwj5MlOVWvSnCdT+C+QVbm6blradR7JExAhbkZ7hZ9A+9NUtwzSqrlUo9a67ws0EiILrvRpw==",
       "dev": true,
       "requires": {
-        "reduce-flatten": "1.0.1",
-        "typical": "2.6.1"
+        "reduce-flatten": "^1.0.1",
+        "typical": "^2.6.1"
+      },
+      "dependencies": {
+        "typical": {
+          "version": "2.6.1",
+          "resolved": "https://registry.npmjs.org/typical/-/typical-2.6.1.tgz",
+          "integrity": "sha1-XAgOXWYcu+OCWdLnCjxyU+hziB0=",
+          "dev": true
+        }
       }
     },
     "wrappy": {
@@ -14688,7 +17137,7 @@
       "integrity": "sha512-/lg70HAjtkUgWPVZhZcm+T4hkL8Zbtp1nFNOn3lRrxnlv50SRBv7cR7RqR+GMsd3hUXy9hWBo4CHTbFTcOYwig==",
       "dev": true,
       "requires": {
-        "mkdirp": "0.5.1"
+        "mkdirp": "^0.5.1"
       }
     }
   }
diff --git a/package.json b/package.json
index ab59a27..7fadcf2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@unicef-polymer/etools-upload",
-  "version": "3.1.7",
+  "version": "3.1.10",
   "homepage": "https://github.com/unicef-polymer/etools-upload",
   "repository": {
     "type": "git",
@@ -26,20 +26,21 @@
     "@polymer/paper-input": "^3.0.2",
     "@polymer/paper-spinner": "^3.0.2",
     "@polymer/polymer": "^3.2.0",
-    "@unicef-polymer/etools-ajax": "^4.1.2",
+    "@unicef-polymer/etools-ajax": "^4.1.4",
     "@webcomponents/webcomponentsjs": "^2.0.3",
     "dexie": "^2.0.4",
     "web-animations-js": "^2.3.1"
   },
   "devDependencies": {
+    "@polymer/gen-typescript-declarations": "^1.6.0",
+    "@polymer/iron-demo-helpers": "^3.0.0",
+    "acorn": "^7.2.0",
     "babel-eslint": "^8.2.6",
     "eslint": "^6.6.0",
     "eslint-config-google": "^0.14.0",
     "eslint-plugin-html": "^6.0.0",
     "polymer-cli": "^1.7.7",
-    "wct-browser-legacy": "^1.0.0",
-    "@polymer/iron-demo-helpers": "^3.0.0",
-    "@polymer/gen-typescript-declarations": "^1.6.0"
+    "wct-browser-legacy": "^1.0.0"
   },
   "engines": {
     "node": ">=8.0"
diff --git a/request-helper-mixin.d.ts b/request-helper-mixin.d.ts
index 2fdb4ed..fcc6182 100644
--- a/request-helper-mixin.d.ts
+++ b/request-helper-mixin.d.ts
@@ -12,6 +12,6 @@
 // tslint:disable:variable-name Describing an API that's defined elsewhere.
 // tslint:disable:no-any describes the API as best we are able today
 
-export {RequestHelper};
+export {RequestHelperMixin};
 
-declare function RequestHelper(): any;
+declare function RequestHelperMixin(): any;