* Revert "Revert "Explicitly typed special assignments are context sensitive (#25619)""
This reverts commit 16676f27071721f846369d5a0c0edae676d41cee.
* Revert "Revert "Explicitly typed prototype assignments are context sensitive (#25688)""
This reverts commit ff8c30d636510cd62ae654d659bd80fb7bed3324.
* Initial, wasteful, solution
It burns a check flags. Probably necessary, but perhaps not.
I haven't accepted baselines, but they are a bit questionable. I'm not
sure the synthetic type is right, because I expected to see
{ "exports": typeof import("x") } but instead see { "x": typeof
import("x") }.
* Update some baselines
* module.exports= always uses lhs type
Conflicts between exports property assignments and exports assignments
should get a union type instead of an error.
* Fix lint and accept good user baselines
* Add tests based on user tests.
These currently fail.
* Fix all but 1 of user test bugs found by typing module.exports
Still quite messy and full of notes
* Follow merged symbols+allow any object type
This allows exports like `module.exports = new EE` to have properties
added to them.
Still messy, but I'm going to run user tests and look for regressions.
* Update improved user baselines
* Fix infinite recursion when checking module.exports
* Fix bogus use-before-def error
getExportSymbolOfValueSymbolIfExported should always merge its returned
symbol, whether it's symbol.exportSymbol or just symbol.
* Update user test baselines
* Cleanup
* More small cleanup
* Bind `module` of `module.exports` as a special symbol
Previously it was also special, but created during name resolution in
the checker. It made sense when there was only one special symbol for
all files, but now there is one `module` symbol per file.
* Fix parsing of parenthesized JSDoc parameters
Parenthesis can start a jsdoc function parameter since it is just a
type, and parenthesis can start a type:
```js
/** @type {function(((string))): void} */
```
However, this is not legal in other parameter lists:
```ts
function x((((a))): string) { }
```
This change makes jsdoc function parameter lists parse differently than
normal parameter lists by allowing parenthesis as a start character of
jsdoc parameters.
* Parse nested uses of jsdoc function types
* Fix test
* add grammar check for labeled function declaration
* fix debug failed on labeled class declaration
* move labeled statement check to binder and add more pattern for check
* update diagnostic message
* update baseline
