33 lines
1.4 KiB
JavaScript
33 lines
1.4 KiB
JavaScript
const require_isEqualsSameValueZero = require("../../_internal/isEqualsSameValueZero.js");
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require("../util/eq.js");
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const require_keysIn = require("./keysIn.js");
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//#region src/compat/object/assignIn.ts
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/**
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* Assigns properties from multiple source objects to a target object.
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*
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* This function merges the properties of the source objects into the target object,
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* including properties from the prototype chain. If a property in the source objects
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* is equal to the corresponding property in the target object, it will not be overwritten.
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*
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* @param object - The target object to which properties will be assigned.
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* @param sources - The source objects whose properties will be assigned to the target object.
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* @returns The updated target object with properties from the source objects assigned.
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*
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* @example
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* const target = { a: 1 };
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* const result = assignIn(target, { b: 2 }, { c: 3 });
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* console.log(result); // Output: { a: 1, b: 2, c: 3 }
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*/
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function assignIn(object, ...sources) {
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for (let i = 0; i < sources.length; i++) assignInImpl(object, sources[i]);
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return object;
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}
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function assignInImpl(object, source) {
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const keys = require_keysIn.keysIn(source);
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for (let i = 0; i < keys.length; i++) {
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const key = keys[i];
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if (!(key in object) || !require_isEqualsSameValueZero.isEqualsSameValueZero(object[key], source[key])) object[key] = source[key];
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}
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}
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//#endregion
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exports.assignIn = assignIn;
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