migrate to Babel 7

.babelrc

@@ -1,21 +1,20 @@
 // vim:ft=javascript
 {
- sourceMaps: 'inline',
+ env: {
+ development: {
+ sourceMaps: 'inline',
+ }
+ },
 
  presets: [
- ['env', {
+ ['@babel/preset-env', {
+ // only include polyfills if they're used
+ useBuiltIns: 'usage',
 
- /*
- * add polyfills for Object.assign, Promise &c. to bring the supported
- * target up to ES2015 compatibility.
- *
- * set debug to true to see what's added.
- */
- useBuiltIns: true,
+ // set this to true to see the applied transforms and bundled polyfills
  debug: false,
 
- targets: { 'node': 4 },
- loose: false,
+ targets: { node: 4 }, // same as Babel 7
  }],
  ],
 }

.eslintrc.yml

@@ -6,15 +6,15 @@
 # eslint-plugin-import \
 # eslint-plugin-node \
 # eslint-plugin-promise
+#
+# (eslint-plugin-import, eslint-plugin-node, and eslint-plugin-promise
+# are peer dependencies of eslint-config-standard)
 
 env:
  browser: true
  commonjs: true
- jasmine: true
  jquery: true
  node: true
- phantomjs: true
- protractor: true
 
 parser: babel-eslint
 
@@ -31,24 +31,19 @@ rules:
  - error
  - 4
 
- # don't care either way about semi-colons
- semi: 0
-
  # don't care if multiple vars are initialised with
  # a single statement
  one-var: 0
 
- # only allow trailing commas in arrays and objects
- # (i.e. avoid using/keeping them in function parameters,
- # which aren't supported prior to ES7)
+ # only allow trailing commas in multi-line expressions
  comma-dangle:
  - error
  -
  arrays: only-multiline
  objects: only-multiline
+ functions: only-multiline
  imports: never
  exports: never
- functions: never
 
  # prefer
  #
@@ -68,21 +63,9 @@ rules:
  -
  allowArrowFunctions: true
 
- # prefer:
- #
- # foo ?
- # bar :
- # baz
- #
- # over:
- #
- # foo
- # ? bar
- # : baz
- #
- operator-linebreak:
- - error
- - after
+ # don't require operators to be consistently placed at the beginning/end
+ # of lines: it varies according to the lines
+ operator-linebreak: 0
 
  # prohibit multiple spaces unless they're used to align requires, imports,
  # or object literals

.travis.yml

@@ -5,3 +5,4 @@ node_js:
  - '4'
  - '6'
  - '8'
+ - '9'

CHANGELOG.md

@@ -1,3 +1,9 @@
+## 2.0.0 - TBC
+
+* **breaking change**:
+ * add support for Babel >= 7.x
+ * remove support for Babel 6.x
+
 ## 1.0.0 - 2017-07-27 14:42:25
 
 * **breaking change**:

README.md

@@ -29,7 +29,7 @@ A Babel plugin which automatically makes stack traces source-map aware
 import foo from 'foo';
 import bar from 'bar';
 
-test();
+foo(bar);
 ```
 
 `$ babel --plugins source-map-support test.js`
@@ -39,7 +39,7 @@ import 'source-map-support/register';
 import foo from 'foo';
 import bar from 'bar';
 
-test();
+foo(bar);
 ```
 
 # DESCRIPTION
@@ -62,6 +62,23 @@ though it's harmless in other environments.
 The source-map-support module only needs to be registered in the top-level file(s) of an application,
 but it no-ops if it has already been loaded, so there is no harm in registering it in every file.
 
+You probably don't want to use this plugin when compiling code for the web because you probably don't
+want to include inline source maps in minified code. An easy way to limit the plugin's use to
+development/test builds, is to use Babel's [`env` option](https://babeljs.io/docs/usage/babelrc/#env-option) e.g.:
+
+```javascript
+{
+ env: {
+ development: {
+ sourceMaps: 'inline',
+ plugins: ['source-map-support', ...]
+ }
+ },
+
+ presets: [ ... ]
+}
+```
+
 ## CAVEATS
 
 Source maps must currently be inline. While the source-map-support module provides a way
@@ -74,35 +91,35 @@ this plugin.
 
 The following NPM scripts are available:
 
-* build - compile the plugin and save it to the target directory
-* test - compile the plugin and run the test suite
-* test:debug - compile the plugin and run the test suite in debug mode (which dumps each transformed test case)
+* release - run the test script in production mode, which compiles the plugin for release
+* test - lint the codebase, compile the plugin, and run the test suite
+* test:debug - run the test script in debug mode, which dumps each transformed test case
 
 ## Gulp Tasks
 
 The following Gulp tasks are available:
 
 * build - compile the plugin and save it to the target directory
 * clean - remove the target directory and its contents
-* default - alias for the `build` task
+* default - run the `clean`, `lint` and `build` tasks
+* lint - check and report style and usage errors in the gulpfile, source file(s) and test file(s)
 
 # SEE ALSO
 
 * [babel](https://www.npmjs.com/package/babel)
-* [babel-plugin-transform-es2015-modules-commonjs-simple](https://www.npmjs.com/package/babel-plugin-transform-es2015-modules-commonjs-simple)
 * [source-map-support](https://www.npmjs.com/package/source-map-support)
 
 # VERSION
 
-1.0.0
+2.0.0
 
 # AUTHOR
 
 [chocolateboy](mailto:[email protected])
 
 # COPYRIGHT AND LICENSE
 
-Copyright © 2015-2017 by chocolateboy
+Copyright © 2015-2018 by chocolateboy
 
 This module is free software; you can redistribute it and/or modify it under the
 terms of the [Artistic License 2.0](http:https://www.opensource.org/licenses/artistic-license-2.0.php).

gulpfile.js

@@ -1,32 +1,35 @@
 const del = require('del')
 const gulp = require('gulp')
 const babel = require('gulp-babel')
+const eslint = require('gulp-eslint')
 
-const config = (function () {
- const srcDir = 'src'
-
- return {
- isDev: process.env.NODE_ENV === 'development',
- paths: {
- srcDir,
- destDir: 'dist',
- src: {
- js: `${srcDir}/**/*.js`
- }
- }
+const config = {
+ isDev: process.env.NODE_ENV === 'development',
+ paths: {
+ destDir: 'dist',
+ src: `src/**/*.js`,
+ test: `test/*.js`,
  }
-})()
+}
+
+// compile the plugin and save it to the target directory
+gulp.task('build', () => {
+ return gulp.src(config.paths.src)
+ .pipe(babel())
+ .pipe(gulp.dest(config.paths.destDir))
+})
 
 // delete the target directory
 gulp.task('clean', () => {
  return del(config.paths.destDir)
 })
 
-// compile the plugin and save it to the target directory
-gulp.task('build', () => {
- return gulp.src(config.paths.src.js)
- .pipe(babel())
- .pipe(gulp.dest(config.paths.destDir))
+// check for violations of style and usage rules
+gulp.task('lint', () => {
+ return gulp.src([__filename, config.paths.src, config.paths.test])
+ .pipe(eslint())
+ .pipe(eslint.format()) // dump invalid code
+ .pipe(eslint.failAfterError()) // exit with an error code on lint errors
 })
 
-gulp.task('default', gulp.task('build'))
+gulp.task('default', gulp.series('clean', 'lint', 'build'))

package.json

@@ -1,35 +1,39 @@
 {
  "name": "babel-plugin-source-map-support",
- "version": "1.0.0",
+ "version": "2.0.0",
  "description": "A Babel plugin which automatically makes stack traces source-map aware",
  "repository": "chocolateboy/babel-plugin-source-map-support",
  "license": "Artistic-2.0",
- "main": "dist/plugin.js",
+ "main": "dist/index.js",
  "files": [
- "package.json",
- "CHANGELOG.md",
- "README.md",
- "dist/plugin.js"
+ "dist/index.js"
  ],
  "scripts": {
- "build": "gulp build",
+ "release": "cross-env NODE_ENV=production npm run test",
  "test:debug": "cross-env NODE_ENV=development npm run test",
- "test": "gulp build && ava --verbose test/*.js"
+ "test": "gulp && ava --verbose test/*.js"
  },
  "dependencies": {
- "babel-core": "^6.4.5",
- "lodash.ismatch": "^4.4.0"
+ "@babel/core": "^7.0.0-beta.40",
+ "@babel/helper-module-imports": "^7.0.0-beta.40"
  },
  "devDependencies": {
- "ava": "^0.21.0",
- "babel-preset-env": "^1.6.0",
+ "@babel/preset-env": "^7.0.0-beta.40",
+ "ava": "^0.25.0",
+ "babel-eslint": "^8.2.1",
  "cross-env": "^5.0.1",
  "del": "^3.0.0",
- "globby": "^6.1.0",
- "grunt-babel": "^6.0.0",
- "gulp": "gulpjs/gulp.git#4.0",
- "gulp-babel": "^6.1.2",
- "root-path": "^0.2.0"
+ "eslint": "^4.3.0",
+ "eslint-config-standard": "^11.0.0",
+ "eslint-plugin-import": "^2.7.0",
+ "eslint-plugin-node": "^6.0.0",
+ "eslint-plugin-promise": "^3.5.0",
+ "eslint-plugin-standard": "^3.0.1",
+ "globby": "^8.0.1",
+ "gulp": "^4.0.0",
+ "gulp-babel": "^8.0.0-beta.1",
+ "gulp-eslint": "^4.0.2",
+ "root-path": "^0.2.1"
  },
  "keywords": [
  "babel-plugin",

src/index.js

@@ -0,0 +1,13 @@
+import { addSideEffect } from '@babel/helper-module-imports'
+
+const IMPORT = 'source-map-support/register'
+
+export default function babelPluginSourceMapSupport () {
+ return {
+ visitor: {
+ Program (path) {
+ addSideEffect(path, IMPORT)
+ }
+ }
+ }
+}