This node module will consume another module and promisify all of its functions.

promisifyModule.js

const {promisify} = require('util');

const promisifyModuleFunctions = (inModule) => Object
	.entries(inModule)
	.reduce((outModule, [key, property]) => {
		outModule[key] = (typeof property === 'function')
			? promisify(property)
			: property;

		return outModule;
	}, {});

module.exports = {
	promisifyModuleFunctions,
	requireWithPromises: (moduleName) => promisifyModuleFunctions(require(moduleName))
};

module.exports = (inModule) => Object.entries(inModule).reduce((outModule, [name, method]) => {
	outModule[name] = (typeof method === 'function')
		? promisify(method)
		: method;

	return outModule;
}, {});