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fix: support record in Object.keys #28899

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fix: support record in Object.keys #28899

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65be5ae
fix: support record in Object.keys
christophehurpeau Dec 7, 2018
146ed2f
test: jake accept baseline
christophehurpeau Dec 7, 2018
2db95f6
fix: also add record in es5.d.ts
christophehurpeau Dec 9, 2018
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1 change: 1 addition & 0 deletions lib/lib.es5.d.ts
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Expand Up @@ -258,6 +258,7 @@ interface ObjectConstructor {
* Returns the names of the enumerable properties and methods of an object.
* @param o Object that contains the properties and methods. This can be an object that you created or an existing Document Object Model (DOM) object.
*/
keys<K extends string>(o: Record<K, any>): K[];
keys(o: {}): string[];
}

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3 changes: 2 additions & 1 deletion src/lib/es5.d.ts
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Expand Up @@ -238,6 +238,7 @@ interface ObjectConstructor {
* Returns the names of the enumerable properties and methods of an object.
* @param o Object that contains the properties and methods. This can be an object that you created or an existing Document Object Model (DOM) object.
*/
keys<K extends string>(o: Record<K, any>): K[];
keys(o: {}): string[];
}

Expand Down Expand Up @@ -577,7 +578,7 @@ interface TemplateStringsArray extends ReadonlyArray<string> {

/**
* The type of `import.meta`.
*
*
* If you need to declare that a given property exists on `import.meta`,
* this type may be augmented via interface merging.
*/
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4 changes: 2 additions & 2 deletions tests/baselines/reference/conditionalTypeDoesntSpinForever.symbols
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Expand Up @@ -403,9 +403,9 @@ export enum PubSubRecordIsStoredInRedisAsA {
fields: () => new Set(Object.keys(soFar) as (keyof SO_FAR)[]),
>fields : Symbol(fields, Decl(conditionalTypeDoesntSpinForever.ts, 94, 18))
>Set : Symbol(Set, Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --))
>Object.keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --))
>Object.keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>Object : Symbol(Object, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --))
>keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>soFar : Symbol(soFar, Decl(conditionalTypeDoesntSpinForever.ts, 92, 29))
>SO_FAR : Symbol(SO_FAR, Decl(conditionalTypeDoesntSpinForever.ts, 92, 21))

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6 changes: 3 additions & 3 deletions tests/baselines/reference/conditionalTypeDoesntSpinForever.types
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Expand Up @@ -409,10 +409,10 @@ export enum PubSubRecordIsStoredInRedisAsA {
>new Set(Object.keys(soFar) as (keyof SO_FAR)[]) : Set<keyof SO_FAR>
>Set : SetConstructor
>Object.keys(soFar) as (keyof SO_FAR)[] : (keyof SO_FAR)[]
>Object.keys(soFar) : string[]
>Object.keys : (o: {}) => string[]
>Object.keys(soFar) : never[]
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why did this changed to never ?

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{} has no properties, so keyof will return the empty union (i.e. `never)

>Object.keys : { <K extends string>(o: Record<K, any>): K[]; (o: {}): string[]; }
>Object : ObjectConstructor
>keys : (o: {}) => string[]
>keys : { <K extends string>(o: Record<K, any>): K[]; (o: {}): string[]; }
>soFar : SO_FAR

hasField: (fieldName: string | number | symbol) => fieldName in soFar
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4 changes: 2 additions & 2 deletions tests/baselines/reference/contextualExpressionTypecheckingDoesntBlowStack.symbols
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Expand Up @@ -21,9 +21,9 @@ export default class Operation {

for(const parameterLocation of Object.keys(parameterValues)) {
>parameterLocation : Symbol(parameterLocation, Decl(contextualExpressionTypecheckingDoesntBlowStack.ts, 8, 17))
>Object.keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --))
>Object.keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>Object : Symbol(Object, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --))
>keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>parameterValues : Symbol(parameterValues, Decl(contextualExpressionTypecheckingDoesntBlowStack.ts, 6, 23))

const parameter: any = (this as any).getParameter();;
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4 changes: 2 additions & 2 deletions tests/baselines/reference/contextualExpressionTypecheckingDoesntBlowStack.types
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Expand Up @@ -21,9 +21,9 @@ export default class Operation {
for(const parameterLocation of Object.keys(parameterValues)) {
>parameterLocation : string
>Object.keys(parameterValues) : string[]
>Object.keys : (o: {}) => string[]
>Object.keys : { <K extends string>(o: Record<K, any>): K[]; (o: {}): string[]; }
>Object : ObjectConstructor
>keys : (o: {}) => string[]
>keys : { <K extends string>(o: Record<K, any>): K[]; (o: {}): string[]; }
>parameterValues : any

const parameter: any = (this as any).getParameter();;
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2 changes: 1 addition & 1 deletion tests/baselines/reference/destructuringParameterDeclaration4.errors.txt
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Expand Up @@ -41,7 +41,7 @@ tests/cases/conformance/es6/destructuring/destructuringParameterDeclaration4.ts(
a1(...array2); // Error parameter type is (number|string)[]
~~~~~~
!!! error TS2552: Cannot find name 'array2'. Did you mean 'Array'?
!!! related TS2728 /.ts/lib.es5.d.ts:1358:15: 'Array' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:1359:15: 'Array' is declared here.
a5([1, 2, "string", false, true]); // Error, parameter type is [any, any, [[any]]]
~~~~~~~~
!!! error TS2322: Type 'string' is not assignable to type '[[any]]'.
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8 changes: 4 additions & 4 deletions tests/baselines/reference/externModule.errors.txt
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Expand Up @@ -69,20 +69,20 @@ tests/cases/compiler/externModule.ts(37,3): error TS2552: Cannot find name 'XDat
var d=new XDate();
~~~~~
!!! error TS2552: Cannot find name 'XDate'. Did you mean 'Date'?
!!! related TS2728 /.ts/lib.es5.d.ts:897:15: 'Date' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:898:15: 'Date' is declared here.
d.getDay();
d=new XDate(1978,2);
~~~~~
!!! error TS2552: Cannot find name 'XDate'. Did you mean 'Date'?
!!! related TS2728 /.ts/lib.es5.d.ts:897:15: 'Date' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:898:15: 'Date' is declared here.
d.getXDate();
var n=XDate.parse("3/2/2004");
~~~~~
!!! error TS2552: Cannot find name 'XDate'. Did you mean 'Date'?
!!! related TS2728 /.ts/lib.es5.d.ts:897:15: 'Date' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:898:15: 'Date' is declared here.
n=XDate.UTC(1964,2,1);
~~~~~
!!! error TS2552: Cannot find name 'XDate'. Did you mean 'Date'?
!!! related TS2728 /.ts/lib.es5.d.ts:897:15: 'Date' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:898:15: 'Date' is declared here.


4 changes: 2 additions & 2 deletions tests/baselines/reference/genericIndexedAccessMethodIntersectionCanBeAccessed.symbols
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Expand Up @@ -45,9 +45,9 @@ export const createService = <T>(
) => {
Object.keys(ServiceCtr).forEach(key => {
>Object.keys(ServiceCtr).forEach : Symbol(Array.forEach, Decl(lib.es5.d.ts, --, --))
>Object.keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --))
>Object.keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>Object : Symbol(Object, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --))
>keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>ServiceCtr : Symbol(ServiceCtr, Decl(genericIndexedAccessMethodIntersectionCanBeAccessed.ts, 11, 33))
>forEach : Symbol(Array.forEach, Decl(lib.es5.d.ts, --, --))
>key : Symbol(key, Decl(genericIndexedAccessMethodIntersectionCanBeAccessed.ts, 14, 36))
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4 changes: 2 additions & 2 deletions tests/baselines/reference/genericIndexedAccessMethodIntersectionCanBeAccessed.types
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Expand Up @@ -32,9 +32,9 @@ export const createService = <T>(
>Object.keys(ServiceCtr).forEach(key => { const method = (ServiceCtr)[key as keyof T]; const {__$daemonMode, __$action, id} = method; }) : void
>Object.keys(ServiceCtr).forEach : (callbackfn: (value: string, index: number, array: string[]) => void, thisArg?: any) => void
>Object.keys(ServiceCtr) : string[]
>Object.keys : (o: {}) => string[]
>Object.keys : { <K extends string>(o: Record<K, any>): K[]; (o: {}): string[]; }
>Object : ObjectConstructor
>keys : (o: {}) => string[]
>keys : { <K extends string>(o: Record<K, any>): K[]; (o: {}): string[]; }
>ServiceCtr : ExtendedService<T> & Service<T>
>forEach : (callbackfn: (value: string, index: number, array: string[]) => void, thisArg?: any) => void
>key => { const method = (ServiceCtr)[key as keyof T]; const {__$daemonMode, __$action, id} = method; } : (key: string) => void
Expand Down
2 changes: 1 addition & 1 deletion tests/baselines/reference/invalidTypeOfTarget.errors.txt
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Expand Up @@ -36,7 +36,7 @@ tests/cases/conformance/types/specifyingTypes/typeQueries/invalidTypeOfTarget.ts
var x7: typeof function f() { };
~~~~~~~~
!!! error TS2552: Cannot find name 'function'. Did you mean 'Function'?
!!! related TS2728 /.ts/lib.es5.d.ts:316:15: 'Function' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:317:15: 'Function' is declared here.
~
!!! error TS1005: ',' expected.
~
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4 changes: 2 additions & 2 deletions tests/baselines/reference/literalTypeWidening.symbols
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Expand Up @@ -366,9 +366,9 @@ export function keys<K extends string, V>(obj: Record<K, V>): K[] {
>K : Symbol(K, Decl(literalTypeWidening.ts, 118, 21))

return Object.keys(obj) as K[]
>Object.keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --))
>Object.keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>Object : Symbol(Object, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --))
>keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>obj : Symbol(obj, Decl(literalTypeWidening.ts, 118, 42))
>K : Symbol(K, Decl(literalTypeWidening.ts, 118, 21))
}
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6 changes: 3 additions & 3 deletions tests/baselines/reference/literalTypeWidening.types
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Expand Up @@ -390,10 +390,10 @@ export function keys<K extends string, V>(obj: Record<K, V>): K[] {

return Object.keys(obj) as K[]
>Object.keys(obj) as K[] : K[]
>Object.keys(obj) : string[]
>Object.keys : (o: {}) => string[]
>Object.keys(obj) : K[]
>Object.keys : { <K extends string>(o: Record<K, any>): K[]; (o: {}): string[]; }
>Object : ObjectConstructor
>keys : (o: {}) => string[]
>keys : { <K extends string>(o: Record<K, any>): K[]; (o: {}): string[]; }
>obj : Record<K, V>
}

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2 changes: 1 addition & 1 deletion .../baselines/reference/modularizeLibrary_ErrorFromUsingES6FeaturesWithOnlyES5Lib.errors.txt
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Expand Up @@ -41,7 +41,7 @@ tests/cases/compiler/modularizeLibrary_ErrorFromUsingES6FeaturesWithOnlyES5Lib.t
Math.sign(1);
~~~~
!!! error TS2551: Property 'sign' does not exist on type 'Math'. Did you mean 'sin'?
!!! related TS2728 /.ts/lib.es5.d.ts:703:5: 'sin' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:704:5: 'sin' is declared here.

// Using ES6 object
var o = {
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2 changes: 1 addition & 1 deletion tests/baselines/reference/narrowExceptionVariableInCatchClause.errors.txt
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Expand Up @@ -24,7 +24,7 @@ tests/cases/conformance/types/any/narrowExceptionVariableInCatchClause.ts(16,17)
err.massage; // ERROR: Property 'massage' does not exist on type 'Error'
~~~~~~~
!!! error TS2551: Property 'massage' does not exist on type 'Error'. Did you mean 'message'?
!!! related TS2728 /.ts/lib.es5.d.ts:964:5: 'message' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:965:5: 'message' is declared here.
}

else {
Expand Down
4 changes: 2 additions & 2 deletions tests/baselines/reference/narrowFromAnyWithInstanceof.errors.txt
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Expand Up @@ -22,14 +22,14 @@ tests/cases/conformance/types/any/narrowFromAnyWithInstanceof.ts(22,7): error TS
x.mesage;
~~~~~~
!!! error TS2551: Property 'mesage' does not exist on type 'Error'. Did you mean 'message'?
!!! related TS2728 /.ts/lib.es5.d.ts:964:5: 'message' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:965:5: 'message' is declared here.
}

if (x instanceof Date) {
x.getDate();
x.getHuors();
~~~~~~~~
!!! error TS2551: Property 'getHuors' does not exist on type 'Date'. Did you mean 'getHours'?
!!! related TS2728 /.ts/lib.es5.d.ts:753:5: 'getHours' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:754:5: 'getHours' is declared here.
}

4 changes: 2 additions & 2 deletions tests/baselines/reference/narrowFromAnyWithTypePredicate.errors.txt
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Expand Up @@ -39,14 +39,14 @@ tests/cases/conformance/types/any/narrowFromAnyWithTypePredicate.ts(33,7): error
x.mesage;
~~~~~~
!!! error TS2551: Property 'mesage' does not exist on type 'Error'. Did you mean 'message'?
!!! related TS2728 /.ts/lib.es5.d.ts:964:5: 'message' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:965:5: 'message' is declared here.
}

if (isDate(x)) {
x.getDate();
x.getHuors();
~~~~~~~~
!!! error TS2551: Property 'getHuors' does not exist on type 'Date'. Did you mean 'getHours'?
!!! related TS2728 /.ts/lib.es5.d.ts:753:5: 'getHours' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:754:5: 'getHours' is declared here.
}

13 changes: 13 additions & 0 deletions tests/baselines/reference/objectKeysWithRecord.js
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@@ -0,0 +1,13 @@
//// [objectKeysWithRecord.ts]
type K = 'foo' | 'bar'
const record: Record<K, boolean> = { foo: true, bar: false };

Object.keys(record).forEach((key: K) => {

});


//// [objectKeysWithRecord.js]
var record = { foo: true, bar: false };
Object.keys(record).forEach(function (key) {
});
23 changes: 23 additions & 0 deletions tests/baselines/reference/objectKeysWithRecord.symbols
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@@ -0,0 +1,23 @@
=== tests/cases/compiler/objectKeysWithRecord.ts ===
type K = 'foo' | 'bar'
>K : Symbol(K, Decl(objectKeysWithRecord.ts, 0, 0))

const record: Record<K, boolean> = { foo: true, bar: false };
>record : Symbol(record, Decl(objectKeysWithRecord.ts, 1, 5))
>Record : Symbol(Record, Decl(lib.es5.d.ts, --, --))
>K : Symbol(K, Decl(objectKeysWithRecord.ts, 0, 0))
>foo : Symbol(foo, Decl(objectKeysWithRecord.ts, 1, 36))
>bar : Symbol(bar, Decl(objectKeysWithRecord.ts, 1, 47))

Object.keys(record).forEach((key: K) => {
>Object.keys(record).forEach : Symbol(Array.forEach, Decl(lib.es5.d.ts, --, --))
>Object.keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>Object : Symbol(Object, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>keys : Symbol(ObjectConstructor.keys, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>record : Symbol(record, Decl(objectKeysWithRecord.ts, 1, 5))
>forEach : Symbol(Array.forEach, Decl(lib.es5.d.ts, --, --))
>key : Symbol(key, Decl(objectKeysWithRecord.ts, 3, 29))
>K : Symbol(K, Decl(objectKeysWithRecord.ts, 0, 0))

});

26 changes: 26 additions & 0 deletions tests/baselines/reference/objectKeysWithRecord.types
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@@ -0,0 +1,26 @@
=== tests/cases/compiler/objectKeysWithRecord.ts ===
type K = 'foo' | 'bar'
>K : K

const record: Record<K, boolean> = { foo: true, bar: false };
>record : Record<K, boolean>
>{ foo: true, bar: false } : { foo: true; bar: false; }
>foo : true
>true : true
>bar : false
>false : false

Object.keys(record).forEach((key: K) => {
>Object.keys(record).forEach((key: K) => {}) : void
>Object.keys(record).forEach : (callbackfn: (value: K, index: number, array: K[]) => void, thisArg?: any) => void
>Object.keys(record) : K[]
>Object.keys : { <K extends string>(o: Record<K, any>): K[]; (o: {}): string[]; }
>Object : ObjectConstructor
>keys : { <K extends string>(o: Record<K, any>): K[]; (o: {}): string[]; }
>record : Record<K, boolean>
>forEach : (callbackfn: (value: K, index: number, array: K[]) => void, thisArg?: any) => void
>(key: K) => {} : (key: K) => void
>key : K

});

2 changes: 1 addition & 1 deletion tests/baselines/reference/parserMemberAccessAfterPostfixExpression1.errors.txt
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Expand Up @@ -11,4 +11,4 @@ tests/cases/conformance/parser/ecmascript5/Expressions/parserMemberAccessAfterPo
!!! error TS1005: ';' expected.
~~~~~~~~
!!! error TS2552: Cannot find name 'toString'. Did you mean 'String'?
!!! related TS2728 /.ts/lib.es5.d.ts:517:15: 'String' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:518:15: 'String' is declared here.
4 changes: 2 additions & 2 deletions tests/baselines/reference/parserS7.2_A1.5_T2.errors.txt
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Expand Up @@ -19,7 +19,7 @@ tests/cases/conformance/parser/ecmascript5/parserS7.2_A1.5_T2.ts(20,3): error TS
$ERROR('#1: eval("\\u00A0var x\\u00A0= 1\\u00A0"); x === 1. Actual: ' + (x));
~~~~~~
!!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
!!! related TS2728 /.ts/lib.es5.d.ts:974:15: 'Error' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:975:15: 'Error' is declared here.
}

//CHECK#2
Expand All @@ -28,7 +28,7 @@ tests/cases/conformance/parser/ecmascript5/parserS7.2_A1.5_T2.ts(20,3): error TS
$ERROR('#2:  var x = 1 ; x === 1. Actual: ' + (x));
~~~~~~
!!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
!!! related TS2728 /.ts/lib.es5.d.ts:974:15: 'Error' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:975:15: 'Error' is declared here.
}


Expand Down
2 changes: 1 addition & 1 deletion tests/baselines/reference/parserS7.3_A1.1_T2.errors.txt
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Expand Up @@ -21,7 +21,7 @@ tests/cases/conformance/parser/ecmascript5/parserS7.3_A1.1_T2.ts(17,3): error TS
$ERROR('#1: var\\nx\\n=\\n1\\n; x === 1. Actual: ' + (x));
~~~~~~
!!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
!!! related TS2728 /.ts/lib.es5.d.ts:974:15: 'Error' is declared here.
!!! related TS2728 /.ts/lib.es5.d.ts:975:15: 'Error' is declared here.
}


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