Migrate from "master" branch to "main" (#11715)
* Remove dead link * Use consistent "homepage" url in package.json * Update md links * Update comment link in parser d.ts * Add comment in gitpod config * Update circleci config * Update PULL_REQUEST_TEMPLATE * Update badges * Trigger CI * Update 404 link
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committed by
Huáng Jùnliàng
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e498bee10f
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eea156b2cb
@@ -16,15 +16,15 @@
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# Contributing
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Contributions are always welcome, no matter how large or small! Before contributing, please read the [code of conduct](https://github.com/babel/babel/blob/master/CODE_OF_CONDUCT.md).
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Contributions are always welcome, no matter how large or small! Before contributing, please read the [code of conduct](https://github.com/babel/babel/blob/main/CODE_OF_CONDUCT.md).
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If you want an already configured online IDE to contribute to Babel, you can use [Gitpod](https://gitpod.io/#https://github.com/babel/babel)!
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## Not sure where to start?
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- If you aren't just making a documentation change, you'll probably want to learn a bit about a few topics.
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- [ASTs](https://en.wikipedia.org/wiki/Abstract_syntax_tree) (Abstract Syntax Tree): The Babel AST [spec](https://github.com/babel/babel/blob/master/packages/babel-parser/ast/spec.md) is a bit different from [ESTree](https://github.com/estree/estree). The differences are listed [here](https://babeljs.io/docs/en/next/babel-parser.html#output).
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- Check out [`/doc`](https://github.com/babel/babel/tree/master/doc) for information about Babel's internals
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- [ASTs](https://en.wikipedia.org/wiki/Abstract_syntax_tree) (Abstract Syntax Tree): The Babel AST [spec](https://github.com/babel/babel/blob/main/packages/babel-parser/ast/spec.md) is a bit different from [ESTree](https://github.com/estree/estree). The differences are listed [here](https://babeljs.io/docs/en/next/babel-parser.html#output).
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- Check out [`/doc`](https://github.com/babel/babel/tree/main/doc) for information about Babel's internals
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- Check out [the Babel Plugin Handbook](https://github.com/thejameskyle/babel-handbook/blob/master/translations/en/plugin-handbook.md#babel-plugin-handbook) - core plugins are written the same way as any other plugin!
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- Check out [AST Explorer](http://astexplorer.net/#/scUfOmVOG5) to learn more about ASTs or make your own plugin in the browser
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- When you feel ready to jump into the Babel source code, a good place to start is to look for issues tagged with [help wanted](https://github.com/babel/babel/labels/help%20wanted) and/or [good first issue](https://github.com/babel/babel/labels/good%20first%20issue).
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@@ -106,7 +106,7 @@ If you just want to run all tests:
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$ make test-only
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```
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When working on an issue, you will most likely want to focus on a particular [packages](https://github.com/babel/babel/tree/master/packages). Using `TEST_ONLY` will only run tests for that specific package.
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When working on an issue, you will most likely want to focus on a particular [packages](https://github.com/babel/babel/tree/main/packages). Using `TEST_ONLY` will only run tests for that specific package.
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```sh
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$ TEST_ONLY=babel-cli make test
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@@ -137,7 +137,7 @@ To enable the Node.js debugger added in v6.3.0, set the `TEST_DEBUG` environment
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$ TEST_DEBUG=true make test
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```
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You can combine `TEST_DEBUG` with `TEST_GREP` or `TEST_ONLY` to debug a subset of tests. If you plan to stay long in the debugger (which you'll likely do!), you may increase the test timeout by editing [test/mocha.opts](https://github.com/babel/babel/blob/master/test/mocha.opts).
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You can combine `TEST_DEBUG` with `TEST_GREP` or `TEST_ONLY` to debug a subset of tests. If you plan to stay long in the debugger (which you'll likely do!), you may increase the test timeout by editing [test/testSetupFile.js](https://github.com/babel/babel/blob/main/test/testSetupFile.js).
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To overwrite any test fixtures when fixing a bug or anything, add the env variable `OVERWRITE=true`
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@@ -165,26 +165,26 @@ In case you're locally getting errors which are not on the CI, it may be due to
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### Writing tests
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Most packages in [`/packages`](https://github.com/babel/babel/tree/master/packages) have a `test` folder, however some tests might be in other packages or in [`/packages/babel-core`](https://github.com/babel/babel/tree/master/packages/babel-core/test/fixtures).
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Most packages in [`/packages`](https://github.com/babel/babel/tree/main/packages) have a `test` folder, however some tests might be in other packages or in [`/packages/babel-core`](https://github.com/babel/babel/tree/main/packages/babel-core/test/fixtures).
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#### `@babel/plugin-x`
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All the Babel plugins (and other packages) that have a `/test/fixtures` are written in a similar way.
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For example, in [`@babel/plugin-transform-exponentiation-operator/test`](https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-exponentiation-operator/test):
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For example, in [`@babel/plugin-transform-exponentiation-operator/test`](https://github.com/babel/babel/tree/main/packages/babel-plugin-transform-exponentiation-operator/test):
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- There is an `index.js` file. It imports our [test helper](https://github.com/babel/babel/tree/master/packages/babel-helper-plugin-test-runner). (You don't have to worry about this).
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- There can be multiple folders under [`/fixtures`](https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-exponentiation-operator/test/fixtures)
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- There is an `index.js` file. It imports our [test helper](https://github.com/babel/babel/tree/main/packages/babel-helper-plugin-test-runner). (You don't have to worry about this).
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- There can be multiple folders under [`/fixtures`](https://github.com/babel/babel/tree/main/packages/babel-plugin-transform-exponentiation-operator/test/fixtures)
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- There is an [`options.json`](https://github.com/babel/babel/blob/master/packages/babel-plugin-transform-exponentiation-operator/test/fixtures/exponentian-operator/options.json) file whose function is similar to a `.babelrc` file, allowing you to pass in the plugins and settings you need for your tests.
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- There is an [`options.json`](https://github.com/babel/babel/blob/main/packages/babel-plugin-transform-exponentiation-operator/test/fixtures/exponentian-operator/options.json) file whose function is similar to a `.babelrc` file, allowing you to pass in the plugins and settings you need for your tests.
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- For this test, we only need the relevant plugin, so it's just `{ "plugins": ["@babel/plugin-transform-exponentiation-operator"] }`.
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- If necessary, you can have an `options.json` with different options in each subfolder.
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- In each subfolder, you can organize your directory structure by categories of tests. (Example: these folders can be named after the feature you are testing or can reference the issue number they fix)
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- Generally, there are two kinds of tests for plugins
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- The first is a simple test of the input and output produced by running Babel on some code. We do this by creating an [`input.js`](https://github.com/babel/babel/blob/master/packages/babel-plugin-transform-exponentiation-operator/test/fixtures/exponentian-operator/binary/input.js) file and an [`output.js`](https://github.com/babel/babel/blob/master/packages/babel-plugin-transform-exponentiation-operator/test/fixtures/exponentian-operator/binary/output.js) file. This kind of test only works in sub-subdirectories of `/fixtures`, i.e. `/fixtures/exponentian-operator/binary/input.js` and **not** `/fixtures/exponentian-operator/input.js`.
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- The first is a simple test of the input and output produced by running Babel on some code. We do this by creating an [`input.js`](https://github.com/babel/babel/blob/main/packages/babel-plugin-transform-exponentiation-operator/test/fixtures/exponentian-operator/binary/input.js) file and an [`output.js`](https://github.com/babel/babel/blob/main/packages/babel-plugin-transform-exponentiation-operator/test/fixtures/exponentian-operator/binary/output.js) file. This kind of test only works in sub-subdirectories of `/fixtures`, i.e. `/fixtures/exponentian-operator/binary/input.js` and **not** `/fixtures/exponentian-operator/input.js`.
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- If you need to expect an error, you can ignore creating the `output.js` file and pass a new `throws` key to the `options.json` that contains the error string that is created.
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- The second and preferred type is a test that actually evaluates the produced code and asserts that certain properties are true or false. We do this by creating an [`exec.js`](https://github.com/babel/babel/blob/master/packages/babel-plugin-transform-exponentiation-operator/test/fixtures/exponentian-operator/comprehensive/exec.js) file.
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- The second and preferred type is a test that actually evaluates the produced code and asserts that certain properties are true or false. We do this by creating an [`exec.js`](https://github.com/babel/babel/blob/main/packages/babel-plugin-transform-exponentiation-operator/test/fixtures/exponentian-operator/comprehensive/exec.js) file.
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In a fixture test, you simply write out the code you want to transform in `input.js`.
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@@ -310,16 +310,16 @@ Note that the code shown in Chrome DevTools is compiled code and therefore diffe
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- Create a new issue that describes the proposal (ex: [#538](https://github.com/babel/babylon/issues/538)). Include any relevant information like proposal repo/author, examples, parsing approaches, meeting notes, presentation slides, and more.
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- The pull request should include:
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- [ ] An update to the [plugins](https://github.com/babel/babel/tree/master/packages/babel-parser#plugins) part of the readme. Add a new entry to that list for the new plugin flag (and link to the proposal)
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- [ ] If any new nodes or modifications need to be added to the AST, update [ast/spec.md](https://github.com/babel/babel/blob/master/packages/babel-parser/ast/spec.md)
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- [ ] An update to the [plugins](https://github.com/babel/babel/tree/main/packages/babel-parser#plugins) part of the readme. Add a new entry to that list for the new plugin flag (and link to the proposal)
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- [ ] If any new nodes or modifications need to be added to the AST, update [ast/spec.md](https://github.com/babel/babel/blob/main/packages/babel-parser/ast/spec.md)
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- [ ] Make sure you use the `this.hasPlugin("plugin-name-here")` check in the babel parser so that your new plugin code only runs when that flag is turned on (not default behavior)
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- [ ] Add failing/passing tests according to spec behavior
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- Start working about the Babel transform itself!
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## Internals
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- AST spec ([babel-parser/ast/spec.md](https://github.com/babel/babel/blob/master/packages/babel-parser/ast/spec.md))
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- Versioning ([doc/design/versioning.md](https://github.com/babel/babel/blob/master/doc/design/versioning.md))
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- Monorepo ([doc/design/monorepo.md](https://github.com/babel/babel/blob/master/doc/design/monorepo.md))
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- Compiler environment support ([doc/design/compiler-environment-support.md](https://github.com/babel/babel/blob/master/doc/design/compiler-environment-support.md))
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- Compiler assumptions ([doc/design/compiler-assumptions.md](https://github.com/babel/babel/blob/master/doc/design/compiler-assumptions.md))
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- AST spec ([babel-parser/ast/spec.md](https://github.com/babel/babel/blob/main/packages/babel-parser/ast/spec.md))
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- Versioning ([doc/design/versioning.md](https://github.com/babel/babel/blob/main/doc/design/versioning.md))
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- Monorepo ([doc/design/monorepo.md](https://github.com/babel/babel/blob/main/doc/design/monorepo.md))
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- Compiler environment support ([doc/design/compiler-environment-support.md](https://github.com/babel/babel/blob/main/doc/design/compiler-environment-support.md))
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- Compiler assumptions ([doc/design/compiler-assumptions.md](https://github.com/babel/babel/blob/main/doc/design/compiler-assumptions.md))
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