This PR allows legacy decorators to work with strict class fields, which
are now stage 3 and have shipped in a number of browsers. Allowing this will
allow users of the legacy transform (which is currently recommended by the
champions of the decorator proposal) to use the proper class field semantics
for non-decorated fields, which should help prevent breakage later on.
This change is not a breaking change, since users had to explicitly opt into
loose mode in class fields before. This just gives them the option to remove
that opt-in.
* fix: typo
* declare name for flow interface
* add test case for export overload function, typescript
* test: add test
Fixes#10044
* test: update test
* test(flow): add multiple declarations regression test
* re-enable flow test case
# Conflicts:
# packages/babel-plugin-transform-flow-strip-types/test/fixtures/strip-types/def-site-variance/input.js
# packages/babel-plugin-transform-flow-strip-types/test/fixtures/strip-types/strip-declare-statements/input.js
# packages/babel-plugin-transform-flow-strip-types/test/fixtures/strip-types/strip-interfaces-module-and-script/input.js
# packages/babel-plugin-transform-flow-strip-types/test/fixtures/strip-types/strip-iterator/input.js
* test: disable two flow dupl-decl test
* fix: do not declare name for declare function until we figure out a better way
* test: duplicate declare function and function would not throw
This also fixes enum not adding the respective declaration to the scope
during the typescript visitation.
Rewrites:
2080042808b18b005fb54aeaf9ab708f64cb1005 #9944
a6392bd636d07c41579ea5ab443152a09943e096 #10019
* fix(typescript): erase type exports
* use Set instead of array for tracking and checking TS type declarations
* add a test for an interface exported before its declaration
This PR fixes a bug in support of JSX pragma in Typescript (introduced in https://github.com/babel/babel/pull/9095).
We've noticed this bug while building a large codebase with webpack+babel+typescript. Some files from our projects are using `/** @jsx h*/` to use a custom function for JSX syntax; and some others are using the React syntax.
We've noticed that our react imports were being removed by babel because the plugin instance was being reused by `babel-loader` and webpack; and it was causing an error :
```
ReferenceError: React is not defined
```
This PR resets the `jsxPragma` being used to the initial value for each new file being processed.
I can't add a unit test for this bug because it requires processing 2 files (one with `/** @jsx something */` then one with the react syntax).
I've tested a build of this PR and it correctly fixes the issue for us.
### `@babel/runtime`
- Added `@babel/runtime-corejs3` package and `corejs: 3` options to `@babel/plugin-transform-runtime`.
- Added support of instance methods, fixes#8928.
- Added flag `proposals` (in `corejs: { version: 3, proposals: true }` format) for support all proposals polyfills from `core-js`.
- Used separate directories in runtime for `core-js` entry points with proposals and without.
- Used `get-iterator-method` helper for getting iterators, fixes#2500.
- As a cheap bonus, added support of IE8- (except some cases of `regenerator`).
### `@babel/polyfill`
- Should be deprecated in favor of separate usage required features from `core-js` and `regenerator-runtime` with an informative message.
### `@babel/preset-env`
- Uses for built-ins data from [`core-js-compat`](https://github.com/zloirock/core-js/tree/master/packages/core-js-compat) instead of `compat-table` since information from `compat-table` [is not enough](https://github.com/zloirock/core-js/tree/master/packages/core-js-compat).
- `useBuilIns` now requires direct setting of `corejs` version option, without it will be used `2` by default and shown deprecation warning.
- Added support of minor `core-js` versions for simplify updating in the future.
- For preventing some order-related problems, polyfills in the both `core-js@3` plugins added on `post` stage in the order of `core-js-compat` data.
- Divided plugins and polyfills parts of `preset-env`, instead of 2 internal plugins for adding polyfills, we have 6: usage and entry versions of plugins for `core-js@2`, ### Current state:
`core-js@3`, `regenerator-runtime`.
- Added support `samsung` target (for Samsung Internet) since `core-js-compat` and `compat-table` now contains mapping for this, fixes#6602.
#### `useBuilIns: entry` with `corejs: 3`
- No longer transforms `@babel/polyfill`.
- Transforms **all possible** `core-js` entry points to import of related modules (based on data from [`core-js-compat`](https://unpkg.com/core-js-compat@3.0.0-beta.15/entries.json)).
- Since of this, we no longer need `shippedProposals` / `proposals` flags with `useBuilIns: entry`.
- Removes `regenerator-runtime/runtime` import where it's not required.
#### `useBuilIns: usage` with `corejs: 3`
- In addition to `shippedProposals`, added flag `proposals` (in `corejs: { version: 3, proposals: true }` format) for polyfill all proposals from `core-js`.
- Fixed list of dependencies in built-in definitions.
- Improved the way of determination method / built-in name and source of this method.
- Adds import of required polyfills on `MemberExpression`, `ObjectPattern`, `in` operator.
- Adds import of required polyfills on access to global object properties.
- Adds import of all required common iterators on all syntax features which use iterators protocol (`for-of`, destructuring, spread, `yield` delegation, etc.).
- Adds import of promises on syntax features which use promises (async functions/generators, dynamic import, etc.), fixes#9250, #7402, etc.
### `core-js@2` stuff
I didn't want to tough `core-js@2`-related stuff, however
- Fixed some serious errors in definitions which breaks `Object.getOwnPropertySymbols`, `Symbol.toStringTag` logic, `Promise#finally`, `Array#forEach`, etc.
- `Array#flatMap` and trim methods moved to stable features as a part of ES2019 and loaded by deprecated `@babel/polyfill` and `@babel/preset-env` with `corejs: 2` option.
Usage of "@babel/plugin-proposal-decorators" with legacy
support causes "abstract" keyword to be preserved.
This fixes it by moving "abstract" node property removal
from "ClassDeclaration" visitor to "Class". Resolves#8172
* fix: strip type imports used in Enums and object types
* chore: update failing snapshot
* docs: correct TSPropertySignature comment
* fix: enum value should be considered a reference
* chore: add tests for TSPropertySignature and TSEnumMember
* Remove types on program exit in typescript transform
* Revert changes to typescript transform
* Correctly add visitors for param decorators
* Fix plugin for node 6
