Version 4.0.0.

.gitignore

@@ -1,9 +1,8 @@
 .idea
-/coverage
-/dist
-/node_modules
-/lib
-/sgp4_verification/lib/sgp4
+coverage
+dist
+node_modules
+lib
+sgp4_verification/lib/sgp4
 *.log
 package-lock.json
-

.npmignore

@@ -1,14 +1,17 @@
 .idea
-/commands
-/coverage
-/sgp4_verification
-/src
-/test
+commands
+coverage
+sgp4_verification
+src
+test
 .babelrc
 .eslintignore
 .eslintrc.json
 .npmignore
+.npmrc
 .travis.yml
+copyright-template.txt
 rollup.*
+package-lock.json
 yarn.lock
 *.log

.npmrc

@@ -0,0 +1 @@
+package-lock=false

.travis.yml

@@ -1,11 +1,9 @@
 language: node_js
 node_js:
+  - "13"
+  - "12"
   - "11"
   - "10"
-  - "9"
-  - "8"
-  - "7"
-  - "6"
 branches:
   only:
     - master

CHANGELOG.md

@@ -1,5 +1,11 @@
 ## Changelog
 
+### 4.0.0 (2020-01-21)
+
+- Node.js 12 support is added. Node.js 6 and Node.js 8 support is dropped (breaking change).
+- Mocha, Chai and Istanbul are replaced by [Jest](https://jestjs.io/).
+- Dependencies are upgraded.
+
 ### 3.0.1 (2019-03-14)
 
 - Unnecessary calculations in `sgp4` function are reduced (#47).
@@ -19,8 +25,7 @@
 
 ### 2.0.2 (2018-04-16)
 
-- [Wrong predictions for Molniya 3-47 orbits](https://github.com/shashwatak/satellite-js/issues/43) are fixed. Special
-thanks to [@nhamer](https://github.com/nhamer).
+- [Wrong predictions for Molniya 3-47 orbits](https://github.com/shashwatak/satellite-js/issues/43) are fixed. Special thanks to [@nhamer](https://github.com/nhamer).
 
 ### 2.0.1 (2018-03-01)
 
@@ -31,12 +36,10 @@ thanks to [@nhamer](https://github.com/nhamer).
 
 - Library became ES and Common.js compatible.
 - Source code is reorganized to match [original Python library](https://pypi.python.org/pypi/sgp4/).
-- `degreesLat` and `degreesLong` don't adjust input radians value and throw `RangeError` if it's out of bounds
-(breaking change).
+- `degreesLat` and `degreesLong` don't adjust input radians value and throw `RangeError` if it's out of bounds (breaking change).
 - `invjday` function is added.
 - [Julian day calculations take account of milliseconds](https://github.com/shashwatak/satellite-js/issues/31)
 ([#38](https://github.com/shashwatak/satellite-js/pull/38)).
-- [Incorrect position and velocity bug](https://github.com/shashwatak/satellite-js/issues/26) for times not close to
-TLE epoch is fixed ([#37](https://github.com/shashwatak/satellite-js/pull/37)).
+- [Incorrect position and velocity bug](https://github.com/shashwatak/satellite-js/issues/26) for times not close to TLE epoch is fixed ([#37](https://github.com/shashwatak/satellite-js/pull/37)).
 - Continuous integration and test coverage are provided.
 - [Bower support is dropped](https://github.com/shashwatak/satellite-js/issues/40).

README.md

@@ -137,8 +137,8 @@ var positionAndVelocity = satellite.sgp4(satrec, time);
 
 ```js
 // Sample TLE
-var tleLine1 = '1 25544U 98067A   13149.87225694  .00009369  00000-0  16828-3 0  9031',
-    tleLine2 = '2 25544 051.6485 199.1576 0010128 012.7275 352.5669 15.50581403831869';
+var tleLine1 = '1 25544U 98067A   19156.50900463  .00003075  00000-0  59442-4 0  9992',
+    tleLine2 = '2 25544  51.6433  59.2583 0008217  16.4489 347.6017 15.51174618173442';    
 
 // Initialize a satellite record
 var satrec = satellite.twoline2satrec(tleLine1, tleLine2);

package.json

@@ -1,6 +1,6 @@
 {
   "name": "satellite.js",
-  "version": "3.0.1",
+  "version": "4.0.0",
   "description": "SGP4/SDP4 calculation library",
   "main": "lib/index.js",
   "jsnext:main": "dist/satellite.es.js",
@@ -15,11 +15,11 @@
     "dist:umd:prod": "cross-env NODE_ENV=production npm run dist:umd && node --require @babel/register commands/add-copyright.js 'dist/**/satellite.min.js'",
     "watch:es": "node --require @babel/register rollup.watch.es.js",
     "copy": "copyfiles -u 1 'dist/**/*' sgp4_verification/lib/sgp4",
-    "lint": "eslint ./src",
-    "lint:test": "eslint -c test/.eslintrc.json ./test",
-    "test": "mocha --recursive --require @babel/register test",
-    "test:coverage": "rimraf coverage && istanbul cover _mocha -- --recursive --require @babel/register test",
-    "test:coveralls": "npm run test:coverage && cat ./coverage/lcov.info | coveralls",
+    "lint": "eslint src",
+    "lint:test": "eslint test",
+    "test": "jest",
+    "test:coverage": "jest --coverage",
+    "test:coveralls": "npm run test:coverage && cat coverage/lcov.info | coveralls",
     "prepublishOnly": "npm run lint && npm run lint:test && npm test && npm run build"
   },
   "repository": {
@@ -40,30 +40,28 @@
   },
   "dependencies": {},
   "devDependencies": {
-    "@babel/cli": "^7.1.5",
-    "@babel/core": "^7.1.6",
-    "@babel/plugin-proposal-class-properties": "^7.1.0",
-    "@babel/plugin-proposal-json-strings": "^7.0.0",
-    "@babel/plugin-syntax-dynamic-import": "^7.0.0",
-    "@babel/plugin-syntax-import-meta": "^7.0.0",
-    "@babel/preset-env": "^7.1.6",
-    "@babel/register": "^7.0.0",
-    "chai": "^4.2.0",
-    "chokidar": "^2.0.4",
-    "copyfiles": "^2.1.0",
-    "coveralls": "^3.0.2",
-    "cross-env": "^5.2.0",
-    "eslint": "^5.9.0",
-    "eslint-config-airbnb-base": "^13.1.0",
-    "eslint-plugin-import": "^2.14.0",
-    "glob": "^7.1.3",
-    "istanbul": "^1.1.0-alpha.1",
-    "mocha": "^5.2.0",
+    "@babel/cli": "^7.8.3",
+    "@babel/core": "^7.8.3",
+    "@babel/plugin-proposal-class-properties": "^7.8.3",
+    "@babel/plugin-proposal-json-strings": "^7.8.3",
+    "@babel/plugin-syntax-dynamic-import": "^7.8.3",
+    "@babel/plugin-syntax-import-meta": "^7.8.3",
+    "@babel/preset-env": "^7.8.3",
+    "@babel/register": "^7.8.3",
+    "chokidar": "^3.3.1",
+    "copyfiles": "^2.2.0",
+    "coveralls": "^3.0.9",
+    "cross-env": "^6.0.3",
+    "eslint": "^6.8.0",
+    "eslint-config-airbnb-base": "^14.0.0",
+    "eslint-plugin-import": "^2.20.0",
+    "glob": "^7.1.6",
+    "jest": "^24.9.0",
     "prepend-file": "^1.3.1",
-    "rimraf": "^2.6.2",
-    "rollup": "^0.67.3",
-    "rollup-plugin-babel": "^4.0.3",
-    "rollup-plugin-uglify": "^6.0.0",
+    "rimraf": "^3.0.0",
+    "rollup": "^1.29.1",
+    "rollup-plugin-babel": "^4.3.3",
+    "rollup-plugin-uglify": "^6.0.4",
     "uglify-es": "^3.3.9"
   },
   "homepage": "https://github.com/shashwatak/satellite-js",

test/.eslintrc.json

@@ -1,9 +1,6 @@
 {
   "extends": "airbnb-base",
   "env": {
-    "mocha": true
-  },
-  "rules": {
-    "function-paren-newline": "off"
+    "jest": true
   }
 }

test/compareVectors.js

@@ -1,15 +1,11 @@
-import chai from 'chai';
-
-chai.should();
-
-export default function compareVectors(vector1, vector2, epsilon) {
-  if (!epsilon) {
-    vector1.x.should.equal(vector2.x);
-    vector1.y.should.equal(vector2.y);
-    vector1.z.should.equal(vector2.z);
+export default function compareVectors(vector1, vector2, numDigits) {
+  if (!numDigits) {
+    expect(vector1.x).toEqual(vector2.x);
+    expect(vector1.y).toEqual(vector2.y);
+    expect(vector1.z).toEqual(vector2.z);
   } else {
-    vector1.x.should.be.closeTo(vector2.x, epsilon);
-    vector1.y.should.be.closeTo(vector2.y, epsilon);
-    vector1.z.should.be.closeTo(vector2.z, epsilon);
+    expect(vector1.x).toBeCloseTo(vector2.x, numDigits);
+    expect(vector1.y).toBeCloseTo(vector2.y, numDigits);
+    expect(vector1.z).toBeCloseTo(vector2.z, numDigits);
   }
 }

test/dopplerFactor.spec.js → test/dopplerFactor.test.js

@@ -1,9 +1,5 @@
-import chai from 'chai';
-
 import dopplerFactor from '../src/dopplerFactor'; // eslint-disable-line
 
-chai.should();
-
 describe('Doppler factor', () => {
   it('doppler factor', () => {
     // TODO:

test/ext.spec.js → test/ext.test.js

@@ -1,5 +1,3 @@
-import chai from 'chai';
-
 import compareVectors from './compareVectors';
 
 import {
@@ -9,17 +7,15 @@ import {
 import twoline2satrec from '../src/io';
 import { propagate, gstime } from '../src/propagation';
 
-chai.should();
-
 describe('Julian date / time', () => {
   let now;
-  before(() => {
+  beforeAll(() => {
     now = new Date();
   });
 
   describe('jday & invjday', () => {
     it('gives the same result with different arguments describing the same time', () => {
-      jday(now).should.equal(jday(
+      expect(jday(now)).toEqual(jday(
         now.getUTCFullYear(),
         now.getUTCMonth() + 1,
         now.getUTCDate(),
@@ -52,7 +48,7 @@ describe('Julian date / time', () => {
         date.getUTCMilliseconds(),
       );
 
-      jdayNoMs.should.not.equal(jdayMs);
+      expect(jdayNoMs).not.toEqual(jdayMs);
     });
 
     it('outputs different results with millisecond precision', () => {
@@ -76,30 +72,30 @@ describe('Julian date / time', () => {
         now.getUTCMilliseconds(),
       );
 
-      jday1.should.not.equal(jday2);
+      expect(jday1).not.toEqual(jday2);
     });
 
     it('invjday gives the same result as date and array', () => {
       const jd = jday(now);
       const date = invjday(jd);
       const dateArray = invjday(jd, true);
-      date.getUTCFullYear().should.equal(dateArray[0]);
-      (date.getUTCMonth() + 1).should.equal(dateArray[1]);
-      date.getUTCDate().should.equal(dateArray[2]);
-      date.getUTCHours().should.equal(dateArray[3]);
-      date.getUTCMinutes().should.equal(dateArray[4]);
-      date.getUTCSeconds().should.equal(dateArray[5]);
+      expect(date.getUTCFullYear()).toEqual(dateArray[0]);
+      expect(date.getUTCMonth() + 1).toEqual(dateArray[1]);
+      expect(date.getUTCDate()).toEqual(dateArray[2]);
+      expect(date.getUTCHours()).toEqual(dateArray[3]);
+      expect(date.getUTCMinutes()).toEqual(dateArray[4]);
+      expect(date.getUTCSeconds()).toEqual(dateArray[5]);
     });
 
     it('date to jday and inverse conversion', () => {
       const jd = jday(now);
-      (invjday(jd).getTime() / 1000).should.be.closeTo(
-        ((now.getTime() - now.getMilliseconds()) / 1000), 1);
+      const expected = ((now.getTime() - now.getMilliseconds()) / 1000);
+      expect(invjday(jd).getTime() / 1000).toEqual(expected);
     });
   });
 
   it('gstime gives the same result with different arguments describing the same time', () => {
-    gstime(now).should.equal(gstime(
+    expect(gstime(now)).toEqual(gstime(
       now.getUTCFullYear(),
       now.getUTCMonth() + 1,
       now.getUTCDate(),