immutable-path/dist/util/unset.js

Immutable `get`, `set`, `has`, `unset` deep path operations libraray for object, array and `Map`.

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const has_1 = __importDefault(require("./has"));
/**
 * Deletes immutably given key/index from object/array/Map. Original value is not changed.
 *
 * @ignore
 * @param source is the source object/array/Map.
 * @param key is the key to delete.
 * @returns new object/array/Map.
 */
function _unset(source, key) {
    if (!has_1.default(source, key))
        return source;
    if (source instanceof Map) {
        const newSource = new Map(source);
        newSource.delete(key);
        return newSource;
    }
    if (Array.isArray(source)) {
        const index = Number(key);
        return [...source.slice(0, index), ...source.slice(index + 1)];
    }
    const { [key]: deleted, ...newSource } = source; // eslint-disable-line @typescript-eslint/no-unused-vars
    return newSource;
}
exports.default = _unset;
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