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Generic type-safe implementation for Object.assign #30481

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Generic type-safe implementation for Object.assign #30481

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31 changes: 2 additions & 29 deletions src/lib/es2015.core.d.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -261,36 +261,9 @@ interface ObjectConstructor {
* Copy the values of all of the enumerable own properties from one or more source objects to a
* target object. Returns the target object.
* @param target The target object to copy to.
* @param source The source object from which to copy properties.
* @param sources The source objects from which to copy properties.
*/
assign<T, U>(target: T, source: U): T & U;

/**
* Copy the values of all of the enumerable own properties from one or more source objects to a
* target object. Returns the target object.
* @param target The target object to copy to.
* @param source1 The first source object from which to copy properties.
* @param source2 The second source object from which to copy properties.
*/
assign<T, U, V>(target: T, source1: U, source2: V): T & U & V;

/**
* Copy the values of all of the enumerable own properties from one or more source objects to a
* target object. Returns the target object.
* @param target The target object to copy to.
* @param source1 The first source object from which to copy properties.
* @param source2 The second source object from which to copy properties.
* @param source3 The third source object from which to copy properties.
*/
assign<T, U, V, W>(target: T, source1: U, source2: V, source3: W): T & U & V & W;

/**
* Copy the values of all of the enumerable own properties from one or more source objects to a
* target object. Returns the target object.
* @param target The target object to copy to.
* @param sources One or more source objects from which to copy properties
*/
assign(target: object, ...sources: any[]): any;
assign<Source extends {}, Result extends Source>(target: Source, ...sources: Source[]): Pick<Result, keyof Source>;

/**
* Returns an array of all symbol properties found directly on object o.
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