* Propagate 'undefined' instead of the optional type marker at an optional chain boundary
* Update src/compiler/types.ts
Co-Authored-By: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
* Fix alias naming and structure bugs in js declarations
* Add another test case and change condition for ns merge to require signature or export content
* Fix typo in comment
* Add isIntersectionConstituent to relation key
isIntersectionConstituent controls whether relation checking performs
excess property and common property checks. It is possible to fail a
relation check with excess property checks turned on, cache the result,
and then skip a relation check with excess property checks that would
have succeeded. #33133 provides an example of such a program.
Fixes#33133 the right way, so I reverted the fix at #33213Fixes#34762 (by reverting #33213)
Fixes#33944 -- I added the test from #34646
* Update comments in test
* resolve require with entity name postfix
For example, `require("x").c`. This is the value equivalent of
`import("x").a.b.c`, but the syntax tree is not as nicely designed for
this purpose.
Fixes#34802
* Add bug number to test
* Add optional chain test
The constructor function code path in the return type checking of
signatures needs to pass the *merged* symbol of the declaration to
getDeclaredTypeOfClassOrInterface. Other callers of
getDeclaredTypeOfClassOrInterface do this, or used an already-merged
symbol.
Fixes#33993
* Exclude ?? operator from true/false literal check in createFlowCondition
* Accept new API baselines
* Add tests
* Accept new baselines
* Address CR feedback
* Accept new API baselines
* Avoid a crash with `@typedef` in a script file.
Scripts (as opposed to modules) do not have a symbol object. If a script
contains a `@typdef` defined on a namespace called `exports`, TypeScript
crashes because it attempts to create an exported symbol on the
(non-existent) symbol of the SourceFile.
This change avoids the crash by explicitly checking if the source file
has a symbol object, i.e. whether it is a module.
* Add usage of exports.SomeName typedef.
* Fix bug at bind site rather than in declare func
* Fix expando handling in getTypeReferenceType
getExpandoSymbol looks for the initialiser of a symbol when it is an
expando value (IIFEs, function exprs, class exprs and empty object
literals) and returns the symbol.
Previously, however, it returned the symbol of the initialiser without
merging with the declaration symbol itself. This missed, in particular,
the prototype assignment in the following pattern:
```js
var x = function x() {
this.y = 1
}
x.prototype = {
z() { }
}
/** @type {x} */
var xx;
xx.z // missed!
```
getJSDocValueReference had weird try-again code that relied on calling
getTypeOfSymbol, which *does* correctly merge the symbols. This PR
re-removes that code and instead makes getExpandoSymbol call
mergeJSSymbols itself.
* Remove extra newline
* Restore delayed merge check to getTypeFromJSDocValueReference
This is needed when a function merges with a prototype assignment. The
resulting *merged* symbol is a constructor function marked with
SymbolFlags.Class. However, the merge doesn't happen until
getTypeOfFuncClassEnumModule is called, which, in the
getTypeReferenceType code path, doesn't happen until
getTypeFromJSDocValueReference. That means the check for
SymbolFlags.Class is missed.
Previously, getTypeFromJSDocValueReference had a weird check
`symbol !== getTypeOfSymbol(symbol).symbol`, which, if true, ran
getTypeReferenceType again on `getTypeOfSymbol(symbol).symbol`. For
JS "aliases", this had the effect of dereferencing the alias, and for
function-prototype merges, this had the effect of ... just trying again
after the merge had happened.
This is a confusing way to run things. getTypeReferenceType should
instead detect a function-prototype merge, cause it to happen, and
*then* run the rest of its code instead of relying on try-again logic at
the very end. However, for the RC, I want to fix this code by restoring
the old check, with an additional check to make sure that #33106 doesn't
break again:
```ts
const valueType = getTypeOfSymbol(symbol)
symbol !== valueType.symbol && getMergedSymbol(symbol) === valueType.symbol
```
I'll work on the real fix afterwards and put it into 3.8.
* Add bug number
* Fix crash in expando assignment to alias
This PR disallows expando assignments
Fixes#34493, but disallows the prototype assignment nonetheless.
* Revert mistaken changes
* Fix stack overflow in circular assignment declaration
It also needs to have multiple assignments so that it has a ValueModule
flag.
Fixes#33006
* remove errant comment
* Remove other possible circularity
* Restore fallback with additional condition
* global module:Fix crash when exporting+aliasing globalThis
* Fix another globalThis crash
find-all-refs assumed that an export inside a `declare x` was always an
ambient module, but it is not -- `declare global` does not allow
`export`, so find-all-refs shouldn't return any refs for this error case.
* migrate nullish coalescing commit
* add more test case
* add branch type check test
* add more tests
* fix nullish precedence
* update public api
* add rescan question question token to fix regression
* update public api baseline
* Added tests that emit for nullish coalescing operator conforming with grammar restrictions when assertions are used.
* Fixed emit to hoist temporary variables (they previously went undeclared).
Added tests to ensure calls and property accesses are only called once.
* use not equal to null
* rename factory
* add grammar check
* fix more cases
* Fix handling of nullish coalescing oprator in expando objects.
* Fixed classifier to support ?? operator.
* update baseline
* accept baseline
* fix review
* update emitter and more testcase
* update control flow
* make linter happy
* update libs
* avoid unnecessary assert
* fix typooo
* Fixes for control-flow analysis
* Start enabling element access special assignment
* Treat element access assignment as special assignment in JS
* Make declarations for bindable element access expressions
* Fix navigationBar crash
* Add multi-level test for JS
* Propagate element access expressions to more code paths
* Fix property access on `this`
* Add quick info test
* Uhhh I guess this is fine
* Fix module["exports"] and property access chained off element access
* Add test for this property assignment
* Add test for and fix prototype property assignment
* Fix teeeest???
* Update APIs
* Fix element access declarations on `this`
* Fix go-to-definition
* Add declaration emit to tests
* Reconcile with late-bound symbol element access assignment
* Fix baselines
* Add JS declaration back to tests
* Fix JS declaration emit of non-late-bound string literal property names
* Revert accidental auto-format
* Use `isAccessExpression`
* Add underscore escaping member to test
* Fix and test navBar changes
* Add support for Optional Chaining
* Add grammar error for invalid tagged template, more tests
* Prototype
* PR feedback
* Add errors for invalid assignments and a trailing '?.'
* Add additional signature help test, fix lint warnings
* Fix to insert text for completions
* Add initial control-flow analysis for optional chains
* PR Feedback and more tests
* Update to control flow
* Remove mangled smart quotes in comments
* Fix lint, PR feedback
* Updates to control flow
* Switch to FlowCondition for CFA of optional chains
* Fix ?. insertion for completions on type variables
* Accept API baseline change
* Clean up types
* improve control-flow debug output
* Revert Debug.formatControlFlowGraph helper
* Support some late-bound special property assignments
* Integrate PR feedback
* PR feedback
* Enable declaration on core tests
* Specialize type of binary expression used for late binding, speculative fix to navigation bar, merge check and type for elem/property accesses
* Add test showing current nav bar behavior (specifically the lack thereof)
* Support template literals in enum declarations
* Support template literals in const enum access
* Support template literals in swith with typeof narrowing
* Support template literals in element access discriminant
* Support template literals in ambient module declaration
* Unify symbols for template literals in computed properties
* Unify expression position checks for template literals
* Support template literals in rename and find all references
* Mark computed properties with template literals as write access
* Inline startsWithQuote
* Allow allowJs and declaration to be used together
This intorduces a new symbol-based declaration emitter - currently this
is only used for JSON and JavaScript, as the output is likely worse than
what the other declaration emitter is capable of. In addition, it is
still incomplete - it does not yet support serializaing namespaces.
* Add tests for various import/export forms, add notes on export as namespace and fix export * from
* Tests & fixes for computed names
* Add test with current @enum tag behavior
* fix declaration emit for jsdoc @enum tags
* Small adjustments to base class serialization to fix bugs in it
* Guard against type/type parameter confusion when using typeParameterToName a bit
* Integrate feedback from PR
* Fix issue with export= declarations visibility calculation and type declaration emit that impacted all forms of declaration emit
* Only make one merged getCommonJsExportEquals symbol for a symbol
* Support preserving type reference directives in js declarations
* Skip declare mdoifiers for namespace members in ambient contexts
* FAKE ALIASES AND NAMESPACES EVERYWHERE
* Dont do namespace sugar when type members contain keyword names
* Fix json source file export modifier under new output
* Such clean nested aliasing, very wow
* Fix lint
* Add visibility errors, reuse type nodes where possible
* Suppoer having correctly named import types in bundled js declaration emit & adjust binding to allow namespaces with aliases to merge when the aliases look to be type-only
* Better support for module.exports = class expression
* Fix discovered crash bug
* Allow export assigned class expressions to be reachable symbols from external declarations
* Add missing semicolon
* Support @enum tag post-merge
* preserve comments on signatures and declarations where possible
* Basic support for js classy functions
* Add example we should do better with
* Prototype assignments make things a bit wonky, but the example from the PR seems OK
* Make a ton of changes to support the new way js classes are bound
* Remove some old comments, fix import and export default names
* Fix bug in object define handling and add tests for object define property declaration emit
* Fix organization nits from PR comments
* Preserve comments from jsdoc declarations on properties and js declaration type aliases
* Merge export declarations with identical specifiers
* Remove completed TODO comment
* Split lint
* Remove now-unused function
* PR feedback
* Add some project references tests, remove some checks from project refs codepaths that are now invalid
* Update project references tests again
* Merge and update project references tests
* Rename case
* Update test to include declaration output
* Remove yet another project refernces redirect extension check
* Update comment
* Add additional import ref to test
* Add shorthand prop to test
* Fix comment text
* Extract var to temp
* Simplify function and add whitespace
* Update project refs test to use incremental edit entry
* Stylistic refactors in the symbol serializer
* Another round of PR feedback, mostly style, small bugfix with constructors, and test showing bug in export assigned class expression name shadowing
* Use x instead of index
* Disallow property/accessor overrides
Unless the base property or accessor is abstract
* Disallow uninitialised property overrides
This causes quite a few test breaks. We'll probably want to revert many
of them by switching to the upcoming `declare x: number` syntax.
* Updates from design review + fix ancient bug
1. Don't error when overriding properties from interfaces.
2. Fix error when overriding methods with other things. This had no
tests so I assume that the code was always dead and never worked.
* Need to add a couple of errors and squash one
Will update after checking out other branch for a minute
* Everything works so far
Need to test properties initialised in constructor
* Check for constructor initialisation
* change error wording
* Improve error wording
* Add codefix to add missing 'declare'
* Always emit accessors in .d.ts files
* Allow 'declare' on any uninitialised property decl
* Undo code moves
* Let sleeping dogs lie
* Correctly set NodeFlags.Ambient
And simplify redundant parts of check.
* Remove more unneeded code
* Update baselines
* Update baselines
* Update baselines
* Ignore this-property assignments
* Fix base-in-interface check
* Do not error when base parent is interface
* Fix base interface check
* Add missed baselines
* Fix check
* Fix new errors in services
* Fix new errors in services
* Fix errors in testRunner
* Add flag and turn off errors when on
* Structure of new emit is correct, fake content
It is 'hi'.
* Basically right emit
* Fix one last unitialised property declaration
* Haha no I missed another one
* Fix whitespace back to CRLF
* Minor fix and code cleanup
* New test case
* Fix bug in isInitializedProperty
* Updates from design meeting.
1. Change flag name to useDefineForClassFields (and flip polarity).
2. Forbid ES3 + useDefineForClassFields (since there is no
defineProperty).
3. Forbid overriding an abstract property-with-initializer with an
accessor.
* Update baselines
* Object.defineProperty for methods too
Using code from Ron from his upcoming refactor of the factory functions.
* Update slow baselines
* Improve error message
* Update src/compiler/transformers/utilities.ts
Co-Authored-By: Andrew Branch <andrewbranch@users.noreply.github.com>
* Add test of computed properties
* Remove done TODO
* Hoist and distribute type parameter constraints over type parameters when comparing against union targets when fetching union constraints
* Fix PR nits
Switches the error message emitted by the parser to the more specific _"An enum member name must be followed by a ',' or '='."_ when the expected comma doesn't follow the member.
* Fix constructor function type reference lookup
I knew I missed some code in the constructor-functions-as-classes PR.
This simplifies the type reference resolution code as well.
* Simplify and document js alias type resolution
* Cache JS inferred class type symbol
Note that many sources merge into a single target, so the *source*
[links] is the one that caches the merged target.
The reason this is a problem is not that many sources merge into a
single target, but that both getTypeOfSymbol and getDeclaredTypeOfSymbol
end up calling mergeJSSymbols with the same [source,target] pair. The
merge should not happen twice.
* Remove more verbose debug assertion message
* Fix isJSConstructor check + update baselines
* inferClassSymbol cache now track multiple targets
* Initial implementation
The original test passes but I haven't run any other tests yet, so I
assume the world is now broken.
* Append constructor function construct sigs
Instead of overwriting them
* Grab bag of improvements.
1. Mark @class-tagged functions with Class too.
2. Only gather local type parameters of constructor functions.
3. Remove getJSClassType calls with getDeclaredTypeOfSymbol.
4. Add a couple more failing tests.
getDeclaredTypeOfClassOrInterface now needs to understand prototype
assignment. That's next, I think.
* Prototype assignments work now
1. Binder marks prototype assignments as Class now.
2. Checker merges prototype assignments using the same merge code as for
functions and their declarations. No more intersections.
Many fewer failing tests now.
* Mark prototype-property assignments as Class
Even if there are no this-property assignments in them. (Then why are
you using a class?).
* Simplify getJSClassType, remove calls to its guts
It's probably not needed because now it's just a conditional call to
getDeclaredTypeOfSymbol, and I think most callers already know whether
they have a JS constructor function beforehand.
* isJSDocConstructor doesn't need to check prototype anymore
Because all the properties are merged during getDeclaredTypeOfSymbol.
* outer type parameter lookup follow prototype assignment
* this-type and -expression support in ctor funcs
Pretty cool!
* Fix remaining tests
* Fix minor lint
* Delete now-unused code
* Add class flag to nested class declarations
Also remove old TODOs
* Add error message for keywords with escapes in them
* Move check into parser during advance to next token to utilize context for contextual keywords
* git add .
* Add tests for extended escapes
* Better error courtesy of @DanielRossenwaser
* Add test of browser-inconsistent case and alter condition to match spec
* Merge adjacent conditions
* Use seperate functions for checking keywords vs not
* Use flags to track unicode escape presence
* Adjust error text
* Remove error on invalid jsdoc tokens
In JSDoc:
1. In the scanner, don't issue an error, even for invalid identifiers.
2. In the binder, don't issue an error for reserved (but otherwise valid)
identifiers.
/**
* Example of 1: "\"
* Example of 2: @private
*/
* Update baselines
* Add invalid unicode escape test for JSDoc
* Add quotes around invalid unicode escape
* Add another unicode escape JSDoc test
* Property assignment uses parent type annotation
First draft, will write full explanation later.
Also makes sure that jsdoc is ignored in TS. It was not before.
* Update baselines
* Control flow for element access expressions
Draft version, just want to see how performance is
* Add baselines
* Fix cast lint
* Cleanup to share code path
* Fix errant diffs
* Parse quoted constructors as constructors, not methods
* Update baselines
* Fix disambiguation between quoted constructor and property named constructor
* Clean up parsing a bit
* Support escapes in constructor name
* Update baselines
* Improve typing for Generators and Async Generators
* Add TReturn and TNext to Iterator, IterableIterator, etc.
* Update ts internal Iterator to be assignable from global Iterator
* Make 'done' optional in IteratorYieldResult
* Revert Iterable and IterableIterator to simpler versions plus other fixes
* Add additional inference tests
* Added additional tests
* PR cleanup and minor async iteration type fix
* Updated diagnostics message and added non-strict tests
* Fix expected arity of Iterator/AsyncIterator
* Add this-parameter workaround to Array.filter
Allows anys.filter(Boolean) to once again return any[], not unknown[].
* Add any constraint to Boolean factory function
I want to test how well this works.
* Remove Boolean factory type guard
* Remove typeGuardBoolean test
* Fix infinite loop: module.exports alias detection
Previously, module.exports alias detection in the binder could enter an
infinite recursion. Now it does not.
Notably, there are *two* safeguards: a counter limiter that I set at
100, and an already-seen set. I actually prefer the counter limiter code
because it's foolproof and uses less memory. But it takes 100
iterations to escape from loops.
* fix space lint
* Remove already-seen map
