Reload a node module by deleting the cache reference in require.

rerequire.js

'use strict';

/**
 * Re-require a module.
 * 
 * @param  {String} path - The module path.
 * @return {*}           - The module export.
 */
module.exports = function rerequire(path) {
    try {
        // the path in the cache key must be absolute
        // https://nodejs.org/docs/latest/api/globals.html#globals_require_cache
        delete require.cache[require.resolve(path)];
        return require(path);
    } catch(error) {
        throw error;
    }
};