@datorama/akita/src/lib/deepFreeze.js

A Reactive State Management Tailored-Made for JS Applications

// @internal
export function deepFreeze(o) {
    Object.freeze(o);
    const oIsFunction = typeof o === 'function';
    const hasOwnProp = Object.prototype.hasOwnProperty;
    Object.getOwnPropertyNames(o).forEach(function (prop) {
        if (hasOwnProp.call(o, prop) &&
            (oIsFunction ? prop !== 'caller' && prop !== 'callee' && prop !== 'arguments' : true) &&
            o[prop] !== null &&
            (typeof o[prop] === 'object' || typeof o[prop] === 'function') &&
            !Object.isFrozen(o[prop])) {
            deepFreeze(o[prop]);
        }
    });
    return o;
}
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