9935 Commits

Author SHA1 Message Date
Anders Hejlsberg
27a80c1d9f Merge branch 'master' into fixGenericSignatureRelation
# Conflicts:
#	src/compiler/checker.ts
#	tests/baselines/reference/keyofAndIndexedAccess2.errors.txt
#	tests/baselines/reference/keyofAndIndexedAccess2.symbols
2020-03-05 17:31:13 -08:00
Nathan Shively-Sanders
061338e82b
Don't inferFromIndexTypes() twice (#34501)
* Don't inferFromIndexTypes() twice

* Add tests
2020-03-04 13:19:35 -08:00
Eli Barzilay
5c8def9a06 Fix emitting ?.
Use `emit()` for writing `questionDotToken`, leading to properly calling
the emit hooks (which `emitTokenWithComment` doesn't) and printing the
comments.  This fixes #35372 by calling its hooks to set the `.__pos`
and `.__end` fields.

Also, remove `getDotOrQuestionDotToken` which was used only here --
mainly because it seems likely to encourage misusing the
`questionDotToken` again.

Also, fix a bunch of `visitor` -> `tokenVisiton` calls in
`visitorPublic.ts`.
2020-03-04 14:52:33 -05:00
Ryan Cavanaugh
67930fc163
Don't crash when there's no class type to derive a 'this' type from (#37164)
Fixes #37161
2020-03-04 09:34:28 -08:00
Wesley Wigham
dfc0b58fe7
Preserve arity for preserving js optional parameters (#37173) 2020-03-04 00:48:53 -08:00
Nathan Shively-Sanders
b481dd4d4b
More precise property-overwritten-by-spread errors (#37192)
* More precise property-overwritten-by-spread errors

Trying to do this check in getSpreadType just doesn't have enough
information, so I moved it to checkObjectLiteral, which is a better
place for issuing errors anyway.

Unfortunately, the approach is kind of expensive in that it

1. creates a new map for each property and
2. iterates over all properties of the spread type, even if it's a
union.

I have some ideas to improve (1) that might work out. I'm not sure how
bad (2) is since we're going to iterate over all properties of all
constituents of a union.

Fixes #36779

* another test and rename
2020-03-03 15:10:19 -08:00
Alexander T
176241cca9
fix(36238): allow aliases in spelling suggestions (#37168) 2020-03-03 10:58:29 -08:00
Wesley Wigham
5941c6e1b1
Emit an any for namepath types (#37176) 2020-03-03 10:55:21 -08:00
Wesley Wigham
b9c0999a2a
Thread host.useCaseSensitiveFileNames through program and node builder into specifier generation (#37170) 2020-03-03 10:50:01 -08:00
Wesley Wigham
67c6cebfc8
Reinterpret a type parameter constrained to any as an upper bound constraint (#29571)
* Reinterpret a type parameter constrained to any as an upper bound constraint

* Use real constraqint in alias in test

Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
2020-03-03 09:51:15 -08:00
Wesley Wigham
af4201ff51
Retain reexports in js emit even when they export nothing (#37124) 2020-03-02 14:33:53 -08:00
Wesley Wigham
d209092ccc
Use merged symbol to pick up js-alias-merged members on export assignments (#37162) 2020-03-02 12:57:00 -08:00
Nathan Shively-Sanders
392fd0ac0b
Remove bogus @implements errors (#37114)
* Remove bogus @implements errors

Make the search for the actual host more comprehensive by reusing the
code that previously only searched for functions. I don't know what to
call this function now, since the old name wasn't accurate either.

* undo gratuitous name change

* Improve name and make calling more uniform

It's slightly less efficient but I think worthwhile for readability.
2020-03-02 09:48:53 -08:00
Anders Hejlsberg
a5796cf3b2
Remove ordering restrictions in control flow analysis (#37134)
* Don't reset CFA type for x.y when x is narrowed

* Add tests

* Accept new baselines

* Remove unnecessary type assertion
2020-02-29 12:03:09 -08:00
Anders Hejlsberg
be4b814a4c
Reduce intersections by discriminants (#36696)
* Treat never-like intersections as never

* Accept new baselines

* Fix compiler issues revealed by increased intersection correctness

* Delete fourslash tests that are no longer applicable

* Include isNeverLikeIntersection check in getNormalizedType

* Erase never-like types in several more places

* Check that base types are not never-like

* Add comments

* Revert isNeverLikeType check in getIndexType (keyof shouldn't resolve member types)

* Introduce getReducedType for union and intersection types

* Don't reduce in getApparentType

* Avoid relationship check in resolveMappedTypeMembers

* Accept new baselines

* Don't call getReducedType in getIndexType

* Ensure reduced and unreduced forms of a type can compare identical

* Reduce types before converting them to string representation

* Accept new baselines

* Reduce intersections before obtaining keyof X

* Add tests

* Accept new baselines

* Fix comment in tests

* Don't infer from empty intersection types

* Add tests

* Accept new baselines

* Defer instantiation of mapped type property types

* Accept new baselines

* Include more precise type in diagnostic

* Accept new baselines

* Minor optimization

* Improve error message

* Optional properties in intersections are never discriminants
2020-02-28 17:06:44 -08:00
Andrew Branch
f9945f5acf
Full support for CommonJS auto-imports in JS (#37027)
* Support add new requires

* Always use destructuring for requiring default exports

* Add more tests

* Update existing fourslash tests

* Use `getExportsAndPropertiesOfModule`

* Add UMD test

* Apply suggestions from code review

Fix typos

Co-Authored-By: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>

Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
2020-02-28 14:34:20 -08:00
Wesley Wigham
c6c2c4c8d5
Hoist initial assignment to exported names in cjs to they are not blocked by bindings made by __exportStar (#37093)
* Hoist initial assignment to exported names in cjs to they are not blocked by bindings made by __exportStar

* Copy hoisted identifiers so they do not create sourcemaps

* Accept updated baselines
2020-02-28 13:25:28 -08:00
Andrew Branch
0a6ee7753d
Grammar error on export type * (#37064)
* Recognize `export type *` syntax, but disallow it

* Add more comments to test

* Revert recognizing invalid forms as type-only

* Revert more
2020-02-27 16:35:15 -08:00
Nathan Shively-Sanders
f1457c1c47 office-ui-fabric: silence progress counter again 2020-02-27 15:29:09 -08:00
Ryan Cavanaugh
f4e371c731
Harden findAllReferences.ts against symbol.declarations = undefined cases (#37088)
Fixes #37086
2020-02-27 14:55:49 -08:00
Wesley Wigham
241b3b942a
Forcibly remove _the other_ submodules 2020-02-27 14:36:08 -08:00
Wesley Wigham
a792fbb1a1
Forcibly remove submodules 2020-02-27 14:30:50 -08:00
Pathurs
5c85febb0c
Fix Get/Set being enumerable (#32264)
* Fix Get/Set being enumerable

fixes #3610

* fix tests

Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
2020-02-27 14:08:20 -08:00
Wesley Wigham
e7c578a67d
Reapply contextual type when recalculating array literals as tuples (#37071) 2020-02-27 14:02:28 -08:00
Eli Barzilay
e71614a185 Proper treatment of splicing tuples in array literals
Fixes #32465.

After this was done, I continued to extend the implementation to handle
TupleLike types but it'ss broken since JS doesn't allow splicing
TupleLike values into array literals so pulled that out, and instead
keeping it for reference below.  (It Includes tests, which are broken
too.)

modified   src/compiler/checker.ts
@@ -22268,6 +22268,21 @@ namespace ts {
                         else hasNonEndingSpreadElement = true;
                     }
                 }
+                else if (spreadType && isTupleLikeType(spreadType)) {
+                    let i = 0, tupleEltType: Type | undefined;
+                    while (tupleEltType = getTypeOfPropertyOfType(spreadType, "" + i as __String)) {
+                        elementTypes.push(tupleEltType);
+                        i++;
+                    }
+                    const stringIndexInfo = getIndexInfoOfType(spreadType, IndexKind.String);
+                    const numberIndexInfo = getIndexInfoOfType(spreadType, IndexKind.Number);
+                    if (stringIndexInfo || numberIndexInfo) {
+                        if (stringIndexInfo) elementTypes.push(stringIndexInfo.type);
+                        if (numberIndexInfo) elementTypes.push(numberIndexInfo.type);
+                        if (i === elementCount - 1) hasEndingSpreadElement = true;
+                        else hasNonEndingSpreadElement = true;
+                    }
+                }
                 else {
                     if (inDestructuringPattern && spreadType) {
                         // Given the following situation:
new file   tests/cases/compiler/spliceTupleLikesWIntegers.ts
@@ -0,0 +1,23 @@
+declare const sb: { [0]: string, [1]: boolean };
+
+let k1: [number, string, boolean];
+k1 = [1, ...sb];
+
+let k2: [number, string, boolean, number];
+k2 = [1, ...sb, 1];
+
+// declare const sb_: [string, ...boolean[]];
+
+// let k3: [number, string, ...boolean[]];
+// k3 = [1, ...sb_];
+
+// declare const sbb_: [string, boolean, ...boolean[]];
+
+// let k4: [number, string, ...boolean[]];
+// k4 = [1, ...sbb_];
+
+// let k5: [number, string, boolean, ...boolean[]];
+// k5 = [1, ...sbb_];
+
+// let k6: [number, string, boolean, boolean, ...boolean[]];
+// k6 = [1, ...sbb_];
new file   tests/cases/compiler/spliceTupleLikesWStrings.ts
@@ -0,0 +1,23 @@
+declare const sb: { 0: string, 1: boolean };
+
+let k1: [number, string, boolean];
+k1 = [1, ...sb];
+
+let k2: [number, string, boolean, number];
+k2 = [1, ...sb, 1];
+
+declare const sb_: { 0: string, [s: string]: (boolean|string) };
+
+let k3: [number, string, ...(boolean|string)[]];
+k3 = [1, ...sb_];
+
+declare const sbb_: { 0: string, 1: boolean, [s: string]: (boolean|string) };
+
+let k4: [number, string, boolean, ...(boolean|string)[]];
+k4 = [1, ...sbb_];
+
+// let k5: [number, string, boolean, ...(boolean|string)[]];
+// k5 = [1, ...sbb_];
+
+// let k6: [number, string, boolean, boolean, ...(boolean|string)[]];
+// k6 = [1, ...sbb_];
2020-02-27 16:43:29 -05:00
Nathan Shively-Sanders
6c5c48c74c
Exempt ambient [#]private from unused error (#37050)
* Exempt ambient [#]private from unused error

These declarations exist to create nominality so they _must_ be unused.
There should be no error for them.

* Switch to fourslash test

I don't know how to baseline suggestion diagnostics in the compiler
tests.
2020-02-27 13:18:43 -08:00
Ryan Cavanaugh
35aea8bbfa
Remove crashing diagnostic code that wasn't helping us (#36913) 2020-02-27 12:45:28 -08:00
Titian Cernicova-Dragomir
f883bf3acb
Adding support for @implements. (#36292)
* Adding support for @implements.

* Fixed code review issues for @implements, added some more tests.

* Fixed declaration emit for @interface

* Improved getImplementsTypes to not cache the results since it is only used once.

* Removed unnecessary checks from getImplementsTypes
2020-02-27 09:27:37 -08:00
Alexander T
baff821594
fix(36989): 'async' modifier cannot be used in an ambient context.ts (#37010)
* fix(36989): omit 'async' modifier for methods in declaration files.

* remove useless condition
2020-02-27 00:11:29 -08:00
Ryan Cavanaugh
c4e96856ac
Detect circularities when removing 'undefined' from defaulted params (#37023)
Fixes #37008

Note that referencing a variable in its initializer is a TDZ error;
the OP report had OOB logic that prevented this in practice (?)
2020-02-26 14:59:04 -08:00
Nathan Shively-Sanders
af901ba911
No error on this exprs in static property inits (#36781)
No error on `this` expressions in static property declaration
initialisers when targetting ESNext and with useDefineForClassFields. In
this case the emit is correct and the types are correct, so the error
should not be issued.
2020-02-26 09:07:45 -08:00
Wesley Wigham
15dd0002ef
Unwrap substitutions both before _and_ after potential simplification (#32116)
* Unwrap substitutions both before _and_ after potential simplification

* Repeatedly unwrap/simplify until no more can be performed

* Use seperate loops for source and target to reduce redundant calls

* Move loop into function

* Inline worker
2020-02-25 17:36:56 -08:00
Wesley Wigham
4d5464e1f9
Revert "Support declaration emit for late bound element accesses assigned to functions in both TS and JS (#36593)" (#37034)
This reverts commit 3e4ce4777d382f2f2b49bd2c7a279b068278552a.
2020-02-25 16:40:38 -08:00
Anders Hejlsberg
9ed73ebbbf
Properly handle control flows from returns in try/catch within IIFE (#36901)
* Properly handle control flows from returns in try/catch within IIFE

* Accept new baselines

* Add tests

* Accept new baselines

* When end of finally is unreachable, end of try statement is too

* Add additional test case
2020-02-25 16:14:00 -08:00
Sheetal Nandi
e89df5ce6f
Handle getScriptVersion correctly to ensure program structure is checked correctly (#36808)
* Fix tests when there are project references but has disableSourceOfProjectReferenceRedirect

* Handle getScriptVersion correctly to ensure program structure is checked correctly
Fixes #36748

* Harness's language service host doesnt have getProjectVersion.
This means earlier we were creating fresh program everytime we did LS operation
Now we reuse same program, so quick info depends on order of quickinfo demands

* Because same program is used, it unvails a bug that if `export=` is evaluated before finding references, it cant find all definitions from the merge

* Update src/server/project.ts

Co-Authored-By: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>

* Make clearSourceMapperCache required

Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
2020-02-25 16:11:21 -08:00
Wesley Wigham
e99173a6f9
Ignore data- props when excess property checking (#36952) 2020-02-25 15:52:24 -08:00
Wesley Wigham
d92aca2715
Reduce lerna loglevel (#37024)
* Reduce lerna loglevel

* Also add silent
2020-02-25 14:23:55 -08:00
Orta
8a797cad2b
Adds floating block comments to the outlining spans response (#36880)
* Adds floating block comments to the outlining spans response

* Only use one route for grabbing outline nodes, which now includes special casing the EOF token
2020-02-25 17:09:16 -05:00
Ryan Cavanaugh
43863cafe2
Check for undefined source.symbol (#37021)
Fixes #37014
2020-02-25 13:46:24 -08:00
Wesley Wigham
3e4ce4777d
Support declaration emit for late bound element accesses assigned to functions in both TS and JS (#36593) 2020-02-25 13:45:27 -08:00
Wesley Wigham
7d8dc730b7
Baseline arity checks for jsx sfc tags (#36643)
Finish comment

PR feedback
2020-02-25 13:44:22 -08:00
Wesley Wigham
e536c89872
Add js-equivalent test for the binary expression stress and introduce trampoline into getJSSyntacticDiagnosticsForFile (#36724)
* Add js-equivalent test for the binary expression stress and introduce trampiline into getJSSyntacticDiagnosticsForFile

* Update src/compiler/parser.ts

Comment text update

Co-Authored-By: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>

* Fix lint

Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
2020-02-25 13:29:34 -08:00
Wesley Wigham
6d1361c192 Add --force to vue-next dockerfile since latest image version errors without it 2020-02-24 17:38:16 -08:00
Nathan Shively-Sanders
3e3df8702c
Fix crash on aliased,exported @enum tag in jsdoc (#36996)
THe code to bind `@enum` and `@typedef` didn't handle the case that the
`@enum` was on a property assignment to an alias of module.exports.
Specifically, `x` needs to be correctly aliased to the file's symbol in
the example below:

```
var x = module.exports = {};
/** @enum {string} */
x.E = {
  A: "A"
};
```
2020-02-24 16:13:18 -08:00
Wesley Wigham
65e7acce58
Use getters to define live export bindings refresh (#35967)
* use getters to define live export bindings

* fix scoping in export* helper

* Object.defineProperty cannot be used in ES3 target

* Accept changed baselines

* Use function expression, not arrow function

* Update importStarHelper to match export helper in binding-making

* Fix whitespace

* Adjust whitespace in edited helpers

* Use new helper for setting bindings, use unscoped __exportStar helper for exports so helpers get reused more

* Accept updated baselines

* Use __createBinding for individual reexports when target is es3

* Remove unneeded type assertion

* Singeline the helpers

* Add check for createBinding helper, accept updated baselines with shortened helper

Co-authored-by: Michael Rawlings <mirawlings@ebay.com>
2020-02-24 15:36:14 -08:00
Ryan Cavanaugh
2b69b2281a
Properly handle both special export forms when renaming (#36914)
* Properly handle both special export forms when renaming

Fixes #36713

* Lint
2020-02-24 13:17:02 -08:00
Wesley Wigham
3bec9ad2c5
Set CI=true in the office-ui-fabric docker test so it doesnt use a progress indicator (#36982) 2020-02-24 12:45:14 -08:00
Ron Buckton
fd8000dd59
Fix class emit in converted loop body (#36795) 2020-02-24 10:55:13 -08:00
Wesley Wigham
ebca423a6e
Add elaboration & quickfix for async-able arrow function (#36342) 2020-02-21 15:51:02 -08:00
Nathan Shively-Sanders
6b645f582b
Fix find-refs crash on JSDocNamepath (#36941)
JSDocNamepaths span a lot of identifiers that we don't actually care
about, so it's incorrect for createChildren to add its children as
synthetic nodes.
2020-02-21 15:37:11 -08:00