* 🔄 createUnionTypeAnnotation => createFlowUnionType
* ➕ add createFlowUnionType if it exists (in new versions only ⚠️)
* 🔄 use createFlowUnionType for createUnionTypeAnnotation
* ➕ add test fixture
* ➕ add removeTypeDuplicates for typescript
* ➕ add createTSUnionType for typescript
* 💊 fix ConditionalExpression for typescript
* 💊 fix ConditionalExpression
* 💊 fix added test case
* ➕ add new line at the end of the file
* 💊 types.every(f) => f(types[0])
* 🔄 bug => foo
* ➕ add TSBaseType
* ➕ add conditions NOT to break backward compatibility
* Bug replication test
* Simplify test
* Fixes#10896
* Merge path.crawl `ClassDeclaration` and `Declaration` visitors
Merged to avoid subtle assumption that `Declaration` is called before `ClassDeclaration`
* Move registartion of class id in crawl to BlockScoped
* Add some assertions to crawl test
* fix: parameter expression closure should not have access to the declaration inside function body
* fix: renameVisitor should skip when a pattern is a scope
* address review comments
* Don't use args rest/spread to hoist super method calls
* Hoist this in hoisted super method calls
* Make the code more readable
Review by edoardocavazza
* lint fix
* switch inside do expression
* review comments
* review comments
* make min diff
* adding more test
* review changes
* review changes
* handle block statement and added more test cases
* fix implementation and add more test cases
* fix last swtich case
* disable block fallthrough case
* fix nitpick reviews
* Better tdz tests
- Use jest's expect.toThrow/expect.not.toThrow
- Add input/output tests
* Fix basic tdz (a = 2; let a)
Fixes#6848
* Make _guessExecutionStatusRelativeTo more robust
* Add tests
* Return less "unkown" execution status
* "function" execution status does not exist
* Fix recursive functions
* Update helper version
* "finally" blocks are always executed
* Typo
* test case for insertBefore for jsx
* fix unshiftContainer and insertBefore
* use path.scope.push
* add test making sure computedKeys var declaration at the right block
* add comment
* nit [skip ci]
* @babel/traverse: Fix NodePath.getData
Currently, if the obtained value is `false`, it will be replaced by the given default value, which is invalid. This makes sure that we only set the default value when the value is `undefined`, instead of falsy.
* Add test and fix object protoype
* Allow false as default value
* Add parser createParenthesizedExpressions option …
When set to `true` we create `ParenthesizedExpression` nodes instead of
setting `extra.parenthesized`.
* Also update babel-parser.d.ts
In https://github.com/babel/babel/issues/9511 (and #9495 is another symptom), @PavelKastornyy reported a node crash becaue the JavaScript heap run out of memory. The problem was that their code was adding enumerable properties to `Object.prototype`: it is something that shouldn't be done, but Babel shouldn't make node crash if someone adds them.
I reduced down the problem to `for...in` loops in `@babel/traverse` that grew the memory consumption exponentially because of that unexpected properties.
* Add parser createParenthesizedExpressions option …
When set to `true` we create `ParenthesizedExpression` nodes instead of
setting `extra.parenthesized`.
* Also update babel-parser.d.ts
* Migrate try-catch duplicate error
* Remove exception for functions and let in the same scope
* Migrate duplicate bindings tests to traverse
* Add test for subscope and let/const
* Add more test cases
* [decorators] Correctly insert `_initialize(this)` after `super()`.
This commit fixes to problem:
1) After `super();` statements, `_initialize(this)` was inserted without
a trailing semicolon.
2) `(0, super())` causes an infinite recursion.
* Fix tests
* Add test
