66 lines
2.1 KiB
JavaScript
66 lines
2.1 KiB
JavaScript
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import { isUnsafeProperty } from "../../_internal/isUnsafeProperty.mjs";
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import { isDeepKey } from "../_internal/isDeepKey.mjs";
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import { toKey } from "../_internal/toKey.mjs";
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import { toPath } from "../util/toPath.mjs";
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//#region src/compat/object/get.ts
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/**
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* Retrieves the value at a given path from an object. If the resolved value is undefined, the defaultValue is returned instead.
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*
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* @param {any} object - The object to query.
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* @param {PropertyKey | readonly PropertyKey[]} path - The path of the property to get.
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* @param {any} [defaultValue] - The value returned if the resolved value is undefined.
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* @returns {any} Returns the resolved value.
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*
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* @example
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* const object = { a: { b: { c: 1 } } };
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* get(object, 'a.b.c');
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* // => 1
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*
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* get(object, ['a', 'b', 'c']);
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* // => 1
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*
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* get(object, 'a.b.d', 'default');
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* // => 'default'
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*/
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function get(object, path, defaultValue) {
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if (object == null) return defaultValue;
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switch (typeof path) {
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case "string": {
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if (isUnsafeProperty(path)) return defaultValue;
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const result = object[path];
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if (result === void 0) if (isDeepKey(path)) return get(object, toPath(path), defaultValue);
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else return defaultValue;
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return result;
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}
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case "number":
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case "symbol": {
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if (typeof path === "number") path = toKey(path);
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const result = object[path];
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if (result === void 0) return defaultValue;
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return result;
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}
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default: {
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if (Array.isArray(path)) return getWithPath(object, path, defaultValue);
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if (Object.is(path?.valueOf(), -0)) path = "-0";
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else path = String(path);
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if (isUnsafeProperty(path)) return defaultValue;
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const result = object[path];
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if (result === void 0) return defaultValue;
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return result;
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}
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}
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}
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function getWithPath(object, path, defaultValue) {
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if (path.length === 0) return defaultValue;
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let current = object;
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for (let index = 0; index < path.length; index++) {
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if (current == null) return defaultValue;
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if (isUnsafeProperty(path[index])) return defaultValue;
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current = current[path[index]];
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}
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if (current === void 0) return defaultValue;
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return current;
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}
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//#endregion
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export { get };
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