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5df09a514c99010d3126d8a9f11aa00ecbd0bd21
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3966 Commits

Author SHA1 Message Date
Andrew Branch
5df09a514c Use bidirectional comparability in narrowing (#50592) 
* Use bidirectional comparability (aka comparability) in narrowing

* Rename test, check other CFA branch, test without strictNullChecks
 2022-09-01 14:26:48 -07:00
Anders Hejlsberg
6db2c882f3 {} & null and {} & undefined should always be never (#50553) 
* {} & null and {} & undefined should be never in non-strictNullChecks mode

* Add tests

* Address code review feedback

* Accept new baselines
 2022-09-01 12:37:13 -07:00
Mateusz Burzyński
238c341701 Defer distributing index over generic object types (#50540) 
* Defer distributing index over generic object types

* Only check if the index type should be deferred for intersection types

* Add an additional test case
 2022-09-01 07:28:13 -07:00
Oleksandr T
a9797d218d fix(50340): typeof ... === "undefined" check on discriminated union of undefined and object type doesn't narrow correctly (#50344) 
* fix(50340): narrow type by discriminant in typeof

* add additional test cases
 2022-08-31 15:00:50 -07:00
Wesley Wigham
488d0eebd0 Retain name and propertyName in declaration emit copies of binding patterns if property name is a keyword (#50537) 
* Retain name and propertyName in declaration emit copies of binding patterns if property name is a keyword

* Accept baselines

* Remove out of date file
 2022-08-30 09:03:02 -07:00
Joost Koehoorn
71b2ba6111 Reuse computed type of condition expressions (#49881) 2022-08-27 01:40:13 -07:00
Oleksandr T
5969ae9ef7 fix(50075): do not strip undefined from the function class properties (#50169) 2022-08-19 09:34:42 -07:00
Wesley Wigham
05d7d6bb12 Unify default import resolution across specifier target codepaths (#49814) 
* Unify default import resolution across specifier target codepaths

* Use differing type aliases, per request
 2022-08-19 02:25:41 -07:00
DetachHead
3b80ddca21 fix first match in RegExpMatchArray being possibly undefined when noUncheckedIndexedAccess is enabled (#49682) 
* fix first match in `RegExpMatchArray` being possibly undefined when `noUncheckedIndexedAccess` is enabled

* fix tests

* add test

Co-authored-by: DetachHead <detachhead@users.noreply.github.com>
Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
 2022-08-16 10:12:12 -07:00
Andrew Branch
4e33e0eb6c Make literal types not comparable to weak object types without property overlap (#49865) 2022-08-15 17:10:11 -07:00
Andrew Branch
64ee1e88e0 Strip literal freshness of contextually typed literals (#49884) 
* Strip literal freshness of contextually typed literals

* Add more tests
 2022-08-15 17:04:09 -07:00
Wesley Wigham
e989d840f1 Forward intersectionState flag when comparing indexed access constraints (#50261) 2022-08-15 16:10:32 -07:00
Ryan Cavanaugh
adf26ffa4b Revert "Fixed an issue with contextual type for intersection properties (#48668)" (#50279) 
This reverts commit 9236e39374.
 2022-08-12 10:24:50 -07:00
Jake Bailey
5fbf3b04dc Don't treat object properties as potential JS contructors without JSDoc class tag (#49735) 2022-08-10 11:19:19 -07:00
Jack Works
382f0c3af3 fix: crashes when JSX.IntrinsicClassAttributes is an alias type close GH-50254 (#50257) 2022-08-10 10:41:12 -07:00
Nathan Shively-Sanders
dd98c17b10 Merge multiple symbols even when re-exported (#49987) 
* Merge multiple symbols even when re-exported

As far as I remember, the target of `mergeSymbol` needs to be a merged
symbol, not a symbol with a mergeId that points to mergedSymbol.
However, mergeSymbolTable didn't check for this.

I can't remember if symbol tables may contain
symbols-with-mergeId. If they can, then mergeSymbolTable needs to call
getMergedSymbol on the individual targets of the merge. That's what I
did in this PR.

* Call getMergeSymbol eagerly

On the source, not target, of mergeSymbolTable's contents
 2022-08-09 16:36:53 -07:00
magic-akari
abc2a350e6 Fix System module export import = (#49788) 
* Add more SystemJS test case

* Fix System module `export import =`

* Update test case
 2022-08-09 16:31:02 -07:00
Mateusz Burzyński
0e17dc7769 Fixed a false positive related to binding patterns and spread expressions (#49684) 
* Fixed a false positive related to binding patterns and spread expressions

* Improve ancestor lookup when checking if an expression is spread into an object

* Fixed ancestor lookup for more node types

* Remove equality check for contextual types

* Reformat code

* Use `isWithinSpreadAssignment` flag + `objectsWithinSpread` cache instead of ancestor traversal

* Revert "Use `isWithinSpreadAssignment` flag + `objectsWithinSpread` cache instead of ancestor traversal"

This reverts commit be387e3bbf.

* Expand on the existing comment
 2022-08-08 17:01:50 -07:00
Gabriela Araujo Britto
bdb8514b82 Fix contextual typing on yield and return expressions in generator function (#49736) 
* add tests and initial fix

* fix contextual return type in generator funcs

* fix return statement contextual typing

* filter using getiterationtypeofgeneratorfunctionreturntype

* update baselines
 2022-08-05 11:24:43 -07:00
Jack Bates
040c1216ff Better typings for Promise.resolve(), like #31117 (#33074) 
* Better typings for Promise.resolve(), like #31117

* Add tests

* Update to Awaited<T>

* Fix issue with Awaited affecting jQuery, additional tests

Co-authored-by: Ron Buckton <ron.buckton@microsoft.com>
 2022-08-02 13:39:50 -04:00
Ron Buckton
55f2c0cb49 No synthetic Awaited for unconstrained type when not a type variable (#50100) 2022-08-01 17:19:15 -04:00
Mateusz Burzyński
5374fd924e Add an additional test for favoring the asserted type in type predicate narrowing (#50065) 
* Add an additional test for favoring the asserted type in type predicate narrowing

* Add requested test cases
 2022-07-29 12:12:33 -07:00
Sheetal Nandi
5b0eea48e9 Report error only on local declaration with additional related information (#49746) 
* Add test where the errors are reported in different file
Test for #49739

* Report error only on local declaration with additional related information
Fixes #49739

* Handle existing tests
 2022-07-27 15:31:45 -07:00
Jake Bailey
8d0c72d5e0 Normalize effective constraint intersection before checking if source is a part of it (#49956) 2022-07-27 10:06:01 -07:00
Jake Bailey
3afe2d654e Resolve parsingContextErrors TODO (#50011) 
* Add a test with broken code

* Resolve TODO
 2022-07-26 08:59:06 -07:00
Anders Hejlsberg
4026c6fd80 Properly handle null and undefined in getCommonSupertype (#50021) 
* Properly handle null and undefined in getCommonSupertype

* Add tests

* Add more tests
 2022-07-24 08:09:14 -07:00
Andrew Branch
6aefc1dcea More fixes to uncalled function checks in && expressions (#49868) 2022-07-22 16:06:16 -07:00
Oleksandr T
5d2e62a810 fix(49854): fix start index to emit statements after super (#49858) 2022-07-20 16:02:30 -07:00
Oleksandr T
5702941c2f fix(49719): Incorrect error 2301 when using ES standard class properties (#49725) 
* fix(49719): omit TS2301 error with enabled usedefineforclassfields

* show error for target lower than esnext with useddefineforclassfields enabled

* change target from esnext to es2022
 2022-07-20 14:36:35 -07:00
Jake Bailey
05d20760af Don't leak EvolvingArray out of code flow (#49943) 2022-07-18 19:00:18 -07:00
Zzzen
efbe03a33c check base constraint when checking operand of plus (#49918) 2022-07-18 09:42:50 -07:00
Anders Hejlsberg
2c68ded954 Improve narrowing logic for instanceof, type predicate functions, and assertion functions (#49625) 
* Improve narrowing logic for instanceof, type predicates, and assertions

* Accept new baselines

* Add tests

* Tweak algorithm

* Accept new baselines

* Optimize for discriminated unions
 2022-07-15 14:01:55 -10:00
Jake Bailey
cf3af3febd Properly propagate ObjectFlags.NonInferrableType, clean up non-inferrable code paths (#49887) 2022-07-14 18:33:09 -07:00
Mateusz Burzyński
2ef3901940 Fixed initializaiton-time inference for class properties assigned through element access (#49374) 2022-07-13 14:43:23 -07:00
Oleksandr T
8ae1e9e7c7 fix(49685): omit incorrect visibility error when setter precedes getter (#49697) 2022-07-06 15:59:05 -07:00
Wesley Wigham
9872184483 Remove dependence on module compiler option to consider mts/cts files always modules (#49815) 2022-07-06 13:26:36 -07:00
Jake Bailey
af70f240a1 Always resetErrorInfo if structuredTypeRelatedTo succeeds (#49718) 2022-07-06 12:57:01 -07:00
Mateusz Burzyński
8687940398 Add visible alias statements for non-visible binding patterns when emitting declaration (#48869) 2022-07-06 10:08:17 -07:00
Wesley Wigham
0f868035af Constrain infer type parameters made to preserver distributivity for inlined homomorphic mapped types (#49793) 2022-07-06 09:32:37 -07:00
Jake Bailey
641ab8eb97 Infer rest type without using assignContextualParameterTypes (#49740) 2022-07-06 08:27:56 -07:00
iamharbie
1f0d0f7c66 Set Error.prototype.cause type to unknown (#70) (#49639) 
Signed-off-by: Abdul-Azeez Lawal <abdul-azeez.lawal@outlook.com>
 2022-07-05 15:43:43 -07:00
Ron Buckton
c6ff5f3b52 Fix for Awaited<T> inference (#49748) 2022-07-01 15:00:54 -07:00
Andrew Branch
f8aa570b23 Get type arguments lazily for instantiating inferred type parameter constraint (#49744) 
* Get type arguments lazily for instantiating inferred constraint

* Use new deferred type mapper
 2022-06-30 16:23:07 -07:00
Wesley Wigham
4c34f2c792 Fix mapper used to instantiate distributive conditional manufactured in declaration emit (#49737) 2022-06-30 15:03:25 -07:00
Mateusz Burzyński
bd11ce2aeb Fixed an issue with self-referential awaited union (#49677) 2022-06-29 13:01:36 -07:00
Jake Bailey
b379e7fc79 Pass contextFlags when getting contextual type of JSX elements/attributes (#49707) 2022-06-28 14:40:26 -07:00
Sheetal Nandi
7e91485bec Use value meaning for computed property name for visibility check (#49678) 
* Test

* Use value meaning for computed property name
Fixes #49562
 2022-06-27 15:16:33 -07:00
Jake Bailey
569cdf1b07 Disallow expression with type parameters as left side of property access (#49464) 2022-06-24 15:54:21 -07:00
Lawrence Craft
ad6d08675c Add case to capture enum subtype reduction 
* Add case to capture enum subtype reduction
Signed-off-by: Lawrence Craft <lcraft6@bloomberg.net>
 2022-06-24 13:04:44 -07:00
Oleksandr T
8636adbbb9 fix(49449): change error location when passing objects/arrays to an argument of type (#49593) 2022-06-22 10:06:01 -07:00