Specify import require paths (continuation of #1941) (#1962)

* Add `.js` extension to source file imports

* Specify package `exports` in `package.json`

Specify package type as `commonjs` (It's good to be specific)

* Move all compiled scripts into `lib` directory

Remove ./number.js (You can use the compiled ones in `./lib/*`)

Tell node that the `esm` directory is type `module` and enable tree shaking.

Remove unused files from packages `files` property

* Allow importing of package.json

* Make library ESM first

* - Fix merge conflicts
- Refactor `bundleAny` into `defaultInstance.js` and `browserBundle.cjs`
- Refactor unit tests to be able to run with plain nodejs (no transpiling)
- Fix browser examples

* Fix browser and browserstack tests

* Fix running unit tests on Node 10 (which has no support for modules)

* Fix node.js examples (those are still commonjs)

* Remove the need for `browserBundle.cjs`

* Generate minified bundle only

* [Security] Bump node-fetch from 2.6.0 to 2.6.1 (#1963)

Bumps [node-fetch](https://github.com/bitinn/node-fetch) from 2.6.0 to 2.6.1. **This update includes a security fix.**
- [Release notes](https://github.com/bitinn/node-fetch/releases)
- [Changelog](https://github.com/node-fetch/node-fetch/blob/master/docs/CHANGELOG.md)
- [Commits](node-fetch/node-fetch@v2.6.0...v2.6.1)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

* Cleanup console.log

* Add integration tests to test the entry points (commonjs/esm, full/number only)

* Create backward compatibility error messages in the files moved/removed since v8

* Describe breaking changes in HISTORY.md

* Bump karma from 5.2.1 to 5.2.2 (#1965)

Bumps [karma](https://github.com/karma-runner/karma) from 5.2.1 to 5.2.2.
- [Release notes](https://github.com/karma-runner/karma/releases)
- [Changelog](https://github.com/karma-runner/karma/blob/master/CHANGELOG.md)
- [Commits](karma-runner/karma@v5.2.1...v5.2.2)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Co-authored-by: Lee Langley-Rees <[email protected]>
Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

.babelrc

@@ -4,8 +4,6 @@
   ],
   "plugins": ["@babel/plugin-transform-object-assign"],
   "ignore": [
-    "dist/*.js",
-    "lib/**/*.js",
-    "es/**/*.js"
+    "lib/**/*.js"
   ]
-}
+}

.gitignore

@@ -2,13 +2,13 @@
 .vscode
 .c9
 _site
-coverage
 *swp
-node_modules
 *.log
-dist
-lib
-es
-.nyc_output
 *.bak
+
+node_modules
+.nyc_output
+/coverage
+
+lib
 *.generated.js

.travis.yml

@@ -1,6 +1,5 @@
 language: node_js
 node_js:
-  - 10
   - 12
   - 14
 
@@ -12,6 +11,9 @@ jobs:
       script: npm run lint
       node_js: lts/*
       name: Lint
+    - script: npm run test:src:transpile
+      node_js: 10
+      name: Node 10
     - script: 'if [ "$TRAVIS_PULL_REQUEST" = "false" ]; then npm run test:browserstack; else npm run test:browser; fi'
       node_js: lts/*
       name: Browser Test

HISTORY.md

@@ -2,6 +2,16 @@
 
 # not yet published, version 8.0.0
 
+!!! BE CAREFUL: BREAKING CHANGES !!!
+
+- You can now use mathjs directly in node.js using ES modules without need for 
+  a transpiler (see #1928, #1941, #1962). 
+  Automatically loading either commonjs code or ES modules code is improved.
+  All generated code is moved under `/lib`: the browser bundle is moved from 
+  `/dist` to `/lib/browser`, ES module files are moved to `/lib/esm`, 
+  and commonjs files are moved to `/lib/cjs`. Thanks @GreenImp.
+- Non-minified bundle `dist/math.js` is no longer provided. Either use the
+  minified bundle, or create a bundle yourself.
 - Replaced random library `seed-random` with `seedrandom`, see #1955. 
   Thanks @poppinlp.
 

README.md

@@ -102,8 +102,8 @@ Then, the project can be build by executing the build script via npm:
 
     npm run build
 
-This will build the library math.js and math.min.js from the source files and
-put them in the folder dist.
+This will build ESM output, CommonJS output, and the bundle math.js 
+from the source files and put them in the folder lib.
 
 
 ## Test

bin/cli.js

@@ -58,7 +58,7 @@ const PRECISION = 14 // decimals
  * @return {*}
  */
 function getMath () {
-  return require('../lib/bundleAny')
+  return require('../lib/cjs/defaultInstance.js').default
 }
 
 /**

bin/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "commonjs"
+}

bin/repl.js

@@ -4,7 +4,7 @@
  * This simply preloads mathjs and drops you into a REPL to
  * help interactive debugging.
  **/
-global.math = require('../lib/bundleAny')
+global.math = require('../lib/cjs/defaultInstance.js').default
 const repl = require('repl')
 
 repl.start({ useGlobal: true })

dist/math.js

@@ -0,0 +1,3 @@
+// TODO: deprecated since v8, remove this deprecation warning in v9
+throw new Error('The non-minified file "mathjs/dist/math.js" has removed since [email protected]. ' +
+  'Please use the minified bundle "mathjs/lib/browser/math.js" instead.')

dist/math.min.js

@@ -0,0 +1,3 @@
+// TODO: deprecated since v8, remove this deprecation warning in v9
+throw new Error('The file "mathjs/dist/math.min.js" has been moved to "mathjs/lib/browser/math.js" since [email protected]. ' +
+  'Please load the bundle via the new path.')

dist/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "commonjs"
+}

examples/browser/angle_configuration.html

@@ -15,7 +15,7 @@
     }
   </style>
 
-  <script src="../../dist/math.js"></script>
+  <script src="../../lib/browser/math.js"></script>
 </head>
 <body>
 

examples/browser/basic_usage.html

@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8">
   <title>math.js | basic usage</title>
-  <script src="../../dist/math.js"></script>
+  <script src="../../lib/browser/math.js"></script>
 </head>
 <body>
 

examples/browser/currency_conversion.html

@@ -4,7 +4,7 @@
   <meta charset="utf-8">
   <title>math.js | currency conversion</title>
 
-  <script src="../../dist/math.js"></script>
+  <script src="../../lib/browser/math.js"></script>
 
   <style>
     body,

examples/browser/custom_separators.html

@@ -15,7 +15,7 @@
     }
   </style>
 
-  <script src="../../dist/math.js"></script>
+  <script src="../../lib/browser/math.js"></script>
 </head>
 <body>
 

examples/browser/plot.html

@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8">
   <title>math.js | plot</title>
-  <script src="../../dist/math.js"></script>
+  <script src="../../lib/browser/math.js"></script>
 
   <script src="https://cdn.plot.ly/plotly-1.35.2.min.js"></script>
 

examples/browser/pretty_printing_with_mathjax.html

@@ -4,7 +4,7 @@
   <meta charset="utf-8">
   <title>math.js | pretty printing with MathJax</title>
 
-  <script src="../../dist/math.js"></script>
+  <script src="../../lib/browser/math.js"></script>
   <script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.3/MathJax.js?config=TeX-AMS-MML_HTMLorMML.js"></script>
 
   <style>

examples/browser/printing_html.html

@@ -4,7 +4,7 @@
 	<meta charset="utf-8">
 	<title>math.js | printing HTML</title>
 
-	<script src="../../dist/math.js"></script>
+	<script src="../../lib/browser/math.js"></script>
 
 	<style>
 		body {

examples/browser/requirejs_loading.html

@@ -9,7 +9,7 @@
 
 <script>
   // load math.js using require.js
-  require(['../../dist/math.js'], function (math) {
+  require(['../../lib/browser/math.js'], function (math) {
     // evaluate some expression
     const result = math.evaluate('1.2 * (2 + 4.5)')
     document.write(result)

examples/browser/rocket_trajectory_optimization.html

@@ -4,7 +4,7 @@
   <meta charset="utf-8">
   <title>math.js | rocket trajectory optimization</title>
 
-  <script src="../../dist/math.js"></script>
+  <script src="../../lib/browser/math.js"></script>
   <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.5.0/Chart.min.js"></script>
 
   <style>

examples/browser/webworkers/worker.js

@@ -1,4 +1,4 @@
-importScripts('../../../dist/math.js')
+importScripts('../../../lib/browser/math.js')
 
 // create a parser
 const parser = self.math.parser()

examples/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "commonjs"
+}