Added type inference to Object.keys type definition. #25832
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Reason: https://stackoverflow.com/questions/51446585/type-array-of-keys-of-a-particular-interface In short, with the current type of Object.keys: `keys(o: {}): string[]`, typescript does not know what the values of `o` are, so if I pass Object.keys from a parent React.Component to a child and type definition of this particular child's prop is specified as `(keyof InterfaceOfO)[]`, I get a `TypeError: Type 'string[]' is not assignable to type '("whatever" | "keys" | "of" | "o" | "are")[].
Object.values has 2 type definitions: https://github.com/Microsoft/TypeScript/blob/master/lib/lib.es2017.object.d.ts This commit returns the current type definition of Object.keys, adding it in addition to the proposed one in attempt to resolve the "non-successful checks" reported by the bot.
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Reason: https://stackoverflow.com/questions/51446585/type-array-of-keys-of-a-particular-interface
In short, with the current type of Object.keys:
keys(o: {}): string[], typescript does not know what the values ofoare, so if I pass Object.keys from a parent React.Component to a child and type definition of this particular child's prop is specified as(keyof InterfaceOfO)[], I get a `TypeError: Type 'string[]' is not assignable to type '("whatever" | "keys" | "of" | "o" | "are")[].Fixes #