Namespace generator for JavaScript using in website. Cut from the work project.

namespace-generator.js

var namespace = (function (global) {
    'use strict';

    const separator = '.';

    // Inner namespace class for containing the inner namespaces and values.
    function Namespace() {
    }

    return function (namespace) {
        const chunks = namespace.split(separator);
        var lastObjRef = global;

        for (let i = 0; i < chunks.length; ++i) {
            const chunk = chunks[i];

            if (typeof lastObjRef[chunk] === 'undefined') {
                lastObjRef[chunk] = new Namespace();
            } else if (lastObjRef[chunk] instanceof Namespace !== true) {
                throw new Error(`Namespace '${chunks.slice(0, i + 1).join(separator)}' has been used for storing value.`);
            }

            lastObjRef = lastObjRef[chunk];
        }

        return lastObjRef;
    };
}(window));