jumbo-core/utils/require.js

Modern lightweight fast enterprise level MVW framework for Node.js

/**
 * This file is part of Jumbo framework for Node.js
 * Written by Roman Jámbor ©
 */

/**
 * Removes a module from the cache
 * @author Ben Barkay
 * @link http://stackoverflow.com/questions/9210542/node-js-require-cache-possible-to-invalidate
 * @memberOf Jumbo.Utils.Require
 */
function uncache(moduleName) {
	// Run over the cache looking for the files
	// loaded by the specified module name
	searchCache(moduleName, function (mod) {
		delete require.cache[mod.id];
	});

	// Remove cached paths to the module.
	// Thanks to @bentael for pointing this out.
	Object.keys(module.constructor._pathCache).forEach(function (cacheKey) {
		if (cacheKey.indexOf(moduleName) > 0) {
			delete module.constructor._pathCache[cacheKey];
		}
	});
}

exports.uncache = uncache;

/**
 * Runs over the cache to search for all the cached files
 * @author Ben Barkay
 * @link http://stackoverflow.com/questions/9210542/node-js-require-cache-possible-to-invalidate
 */
function searchCache(moduleName, callback) {
	// Resolve the module identified by the specified name
	let mod = require.resolve(moduleName);

	// Check if the module has been resolved and found within
	// the cache
	if (mod && ((mod = require.cache[mod]) !== undefined)) {
		// Recursively go over the results
		(function run(mod) {
			// Go over each of the module's children and
			// run over it
			mod.children.forEach(function (child) {
				if (child.id != mod.id) {
					// console.log(mod.id, child.id);
					run(child);
				}
			});

			// Call the specified callback providing the
			// found module
			callback(mod);
		})(mod);
	}
}

exports.searchCache = searchCache;