Define unwritable property to the given object.

definePropertyFreeze.js

/**
 * Define unwritable property to the given object.
 * @example
 * var test = {};
 * test = definePropertyFreeze(test, 'foo', 'bar');
 * test = definePropertyFreeze(test, 'baz', {bat: 'bral'});
 * test = definePropertyFreeze(test, 'bot', [1, 2]);
 * // then
 * test.bat = 'ok'; // works
 * test.foo = 'nok'; // not working, test.foo return 'bar'
 * test.baz.ouch = 'nok'; // not working, test.baz return {bat: "bral"}
 * test.baz.bat = 'nok'; // not working, test.baz.bat return "bral"
 * test.bot.push(3); // not working, test.bot returns [1, 2]
 */
export default function definePropertyFreeze(obj, name, value) {
    if (Array.isArray(value) || typeof value === 'object' && value.constructor === Object) {
        const context = Array.isArray(value) ? [] : {};
        value = Object.entries(value).reduce((acc, [k, v]) => {
            acc[k] = definePropertyFreeze(acc, k, v);
            return acc;
        }, context);
        value = Object.freeze(value);
    }

    Object.defineProperty(obj, name, {
        configurable: true,
        enumerable: true,
        value: value,
        writable: false,
    });

    return obj;
}