62 lines
2.2 KiB
JavaScript
62 lines
2.2 KiB
JavaScript
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import { isPrimitive } from "../predicate/isPrimitive.mjs";
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import { isTypedArray } from "../predicate/isTypedArray.mjs";
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//#region src/object/clone.ts
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/**
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* Creates a shallow clone of the given object.
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*
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* @template T - The type of the object.
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* @param {T} obj - The object to clone.
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* @returns {T} - A shallow clone of the given object.
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*
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* @example
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* // Clone a primitive values
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* const num = 29;
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* const clonedNum = clone(num);
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* console.log(clonedNum); // 29
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* console.log(clonedNum === num); // true
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*
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* @example
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* // Clone an array
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* const arr = [1, 2, 3];
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* const clonedArr = clone(arr);
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* console.log(clonedArr); // [1, 2, 3]
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* console.log(clonedArr === arr); // false
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*
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* @example
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* // Clone an object
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* const obj = { a: 1, b: 'es-toolkit', c: [1, 2, 3] };
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* const clonedObj = clone(obj);
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* console.log(clonedObj); // { a: 1, b: 'es-toolkit', c: [1, 2, 3] }
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* console.log(clonedObj === obj); // false
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*/
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function clone(obj) {
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if (isPrimitive(obj)) return obj;
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if (Array.isArray(obj) || isTypedArray(obj) || obj instanceof ArrayBuffer || typeof SharedArrayBuffer !== "undefined" && obj instanceof SharedArrayBuffer) return obj.slice(0);
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const prototype = Object.getPrototypeOf(obj);
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if (prototype == null) return Object.assign(Object.create(prototype), obj);
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const Constructor = prototype.constructor;
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if (obj instanceof Date || obj instanceof Map || obj instanceof Set) return new Constructor(obj);
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if (obj instanceof RegExp) {
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const newRegExp = new Constructor(obj);
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newRegExp.lastIndex = obj.lastIndex;
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return newRegExp;
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}
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if (obj instanceof DataView) return new Constructor(obj.buffer.slice(0));
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if (obj instanceof Error) {
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let newError;
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if (obj instanceof AggregateError) newError = new Constructor(obj.errors, obj.message, { cause: obj.cause });
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else newError = new Constructor(obj.message, { cause: obj.cause });
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newError.stack = obj.stack;
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Object.assign(newError, obj);
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return newError;
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}
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if (typeof File !== "undefined" && obj instanceof File) return new Constructor([obj], obj.name, {
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type: obj.type,
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lastModified: obj.lastModified
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});
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if (typeof obj === "object") return Object.assign(Object.create(prototype), obj);
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return obj;
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}
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//#endregion
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export { clone };
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