microsoft / TypeScript

* Infer template literal types for template literal expressions

* Update test

* Update another test

* Accept new baselines

* Minor fixes

* Add tests

* Accept new baselines

* Make new TypeFlags internal

* Accept new API baselines

* Ensure template literals assignable to String, Object, {}, etc.

* Add tests

…lve to scripts (#41936)

* Support find-all-references on triple-slash references that resolve to scripts

* Rename terrible name

* Add test for <reference types="..." />

* Actually accept baselines

* Naive implementation enough to build and write a test

* Add simple test

* Add project references test

* Add deduplication test, accept baselines

* Add test for referencing a script (doesn’t do anything)

* Update API baselines

* Use refFileMap for non-module references

* Fix find-all-refs on module specifier

* Remove unused util

* Don’t store text range on ts.RefFile

* Ensure string literal could itself be a file reference

* Remove unused utilities

* Improve baseline format

* Preserve old behavior of falling back to string literal references

* Update baselines from master

* Fix old RefFileMap code after merge

* Add test for additional response info

* Undo test change

…41364)

* Watch extended configs if present

* Address code review comments

Added new `WatchType` for extended config files. Refactored watch map
update to separate function, relocated call sites. Removed unnecessary
test cases and relocated with new tests in programUpdates.

* Unify extended config file watching between tsc/tsserver

Update `updateExtendedConfigFilesWatch` to read from a
`TsConfigSourceFile` to get `extendedSourceFiles`. Add watcher map to
`ConfiguredProject` in the server. New test cases to verify correct
events triggered and extended files are being watched properly.

* Simplify watcher callback, fix tests

Removes unnecessary actions in extended config watcher callback
function. Updates tests to match.

* Share extended config watchers across projects in server

New shared watcher map in ProjectService that stores callbacks per
project to be invoked when the file watcher is triggered. The
FileWatcher is created with the watch options of the first Project to
watch the extended config.

* Refactor shared extended config map and watchers

Remove all server-related utility functions/types from
watchUtilities. Store config-project mapping and config file watchers
inside ProjectService with new private methods to add or remove
projects.

* Store projects in extended config file watcher

Creates SharedExtendedConfigFileWatcher in both editorServices
(tsserver) and tsbuildPublic. The file watcher is responsible for
triggering a full project reload for the contained projects. Upon
reload, any configs that are no longer related to a project have their
watchers updated to match. New test cases to confirm that the file
watchers for extended configs are closed when the project is closed.

* Apply suggestions from code review

Co-authored-by: Sheetal Nandi <[email protected]>

* Map extended config files by path

* Move shared watcher into utilities and add more tests

Co-authored-by: Sheetal Nandi <[email protected]>

* Detect comparisons between large unions or intersections

If their multiplied size is greater than 1E6 (chosen based on the repro
in #41517), then we'll expend a large amount of time and memory
comparing them, so record a trace event.

Related to #41517

* Make an exception for primitive union comparisons

* Address PR feedback

* Pick up baseline change from master

* Eliminate diagnostic and only trace

* Don't check reportErrors

* Only mark aliases that resolve to values referenced

* Update other affected baselines

* Remove redundant check

LEGO: Merge pull request 41908

…ption (#41873)

LEGO: Merge pull request 41900

LEGO: Merge pull request 41892

LEGO: Merge pull request 41884

* --explainFiles currently hardcoded

* Move configFileSpecs to configFile so it can be used in program later

* Explain root file inclusion reason and explain include files in the log

* Baseline explainFiles

* Fix incorrectly reporting of file list two times in --b mode

* Fix unnecessary new lines in output represented incorretly in the baseline

* More tests

* More cleaning up

* Keep listing files in same order as list files, just add explaination

* Fix double listing of file names when the program has errors

* Make diagnostic chains for file include reason

* Add explaination for the file include to diagnostics for program

* Harness ls incorrectly adding tsconfig as the root file

* Fix incorrect use of path for calculating absolute path

* Fix the root file in fourslash

* Test project service options merge

* Add config file name to matched by include explaination

* Add test for when the file changes and program is reused completely but related file information is reattached to correct location

* Handle file preprocessing diagnostics updates when program is reused and related information location changes

* Moved types to types.ts

* Refactoring and cleanup

* More cleanup

* More refatoring

* Handle synthetic imports

* Baselines after merge

* Adds experimental support for running TS Server in a web worker

This change makes it possible to run a syntax old TS server in a webworker. This is will let serverless versions of VS Code web run the TypeScript extension with minimal changes.

As the diff on `server.ts` is difficult to parse, here's an overview of the changes:

- Introduce the concept of a `Runtime`. Valid values are `Node` and `Web`.
- Move calls to `require` into the functions that use these modules
- Wrap existing server logic into `startNodeServer`
- Introduce web server with `startWebServer`. This uses a `WorkerSession`
- Add a custom version of `ts.sys` for web
- Have the worker server start when it is passed an array of arguments in a message

In order to make the server logic more clear, this change also tries to reduce the reliance on closures and better group function declarations vs the server spawning logic.

**Next Steps**
I'd like someone from the TS team to help get these changes into a shippable state. This will involve:

- Adddress todo comments
- Code cleanup
- Make sure these changes do not regress node servers
- Determine if we should add a new `tsserver.web.js` file instead of having the web worker logic all live in `tsserver.js`

* Shim out directoryExists

* Add some regions

* Remove some inlined note types

Use import types instead

* Use switch case for runtime

* Review and updates

* Enable loading std library d.ts files

This implements enough of `ServerHost` that we can load the standard d.ts files using synchronous XMLHttpRequests.

I also had to patch some code in `editorServices`. I don't know if these changes are correct and need someone on the TS team to review

* Update src/tsserver/webServer.ts

* Update src/tsserver/webServer.ts

Co-authored-by: Sheetal Nandi <[email protected]>

* Addressing feedback

* Allow passing in explicit executingFilePath

This is required for cases where `self.location` does not point to the directory where all the typings are stored

* Adding logging support

* Do not create auto import provider in partial semantic mode

* Handle lib files by doing path mapping instead

* TODO

* Add log message

This replaces the console based logger with a logger that post log messages back to the host. VS Code will write these messages to its output window

* Move code around so that exported functions are set on namespace

* Log response

* Map the paths back to https:
// TODO: is this really needed or can vscode take care of this
How do we handle when opening lib.d.ts as response to goto def in open files

* If files are not open dont schedule open file project ensure

* Should also check if there are no external projects before skipping scheduling
Fixes failing tests

* Revert "Map the paths back to https:"

This reverts commit 0edf650.

* Revert "TODO"

This reverts commit 04a4fe7.

* Revert "Should also check if there are no external projects before skipping scheduling"

This reverts commit 7e49390.

* Refactoring so we can test the changes out

* Feedback

Co-authored-by: Sheetal Nandi <[email protected]>

* Loosen author tag parsing

Also make the code more efficient and easier to read.

1. Arbitrary text, except for newline and @, is allowed for the author name.
2. Arbirtrary text, except for newline, is allowed for the email
address.
3. Newline is treated as a match for an open <

I tried to allow newlines in the author and email, but it was ambiguous
with the end of the tag.

I also got rid of the two lookaheads and unified the trailing comment
handling.

Fixes #41804

* remove hardmode test since it did not reveal anything new

…auses (#41783)

* Reuse input nodes where possible when serializing jsdoc implements clauses

* Whitespace changes, per PR feedback

LEGO: Merge pull request 41878

…41841)

* Preserve substitution types in check types of conditional types

* Undo changes from #32093

* Add regression tests

* Accept new baselines

…am emit file path calculation (#41811)

* Baseline showing #41801 and other issues with output path calculation

* Add a way to note descripencies between clean and incremental build

* Add descripency when no rootDir is specified but project is composite

* if rootDir is specified, irrespective of whether all files belong to rootDir, the paths should be calculated from rootDir

* Fix the output file names api to use the correct common source directory

* Tests for #41780

* Spelling

…declaration path. (#41816)

* fix #41800

* add test

* fix test