81 lines
2.4 KiB
JavaScript
81 lines
2.4 KiB
JavaScript
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var path = require('path'); // if module is locally defined we path.resolve it
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var callsite = require('callsite');
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require.find = function (moduleName) {
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if (moduleName[0] === '.') {
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var stack = callsite();
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for (var i in stack) {
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var filename = stack[i].getFileName();
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if (filename !== module.filename) {
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moduleName = path.resolve(path.dirname(filename), moduleName);
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break;
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}
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}
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}
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try {
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return require.resolve(moduleName);
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} catch (e) {
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return;
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}
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};
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/**
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* Removes a module from the cache. We need this to re-load our http_request !
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* see: http://stackoverflow.com/a/14801711/1148249
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*/
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require.decache = function (moduleName) {
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moduleName = require.find(moduleName);
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if(!moduleName) {return;}
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// Run over the cache looking for the files
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// loaded by the specified module name
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require.searchCache(moduleName, function (mod) {
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delete require.cache[mod.id];
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});
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// Remove cached paths to the module.
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// Thanks to @bentael for pointing this out.
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Object.keys(module.constructor._pathCache).forEach(function(cacheKey) {
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if (cacheKey.indexOf(moduleName)>0) {
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delete module.constructor._pathCache[cacheKey];
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}
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});
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};
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/**
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* Runs over the cache to search for all the cached
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* files
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*/
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require.searchCache = function (moduleName, callback) {
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// Resolve the module identified by the specified name
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var mod = require.resolve(moduleName);
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var visited = {};
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// Check if the module has been resolved and found within
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// the cache no else so #ignore else http://git.io/vtgMI
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/* istanbul ignore else */
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if (mod && ((mod = require.cache[mod]) !== undefined)) {
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// Recursively go over the results
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(function run(current) {
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visited[current.id] = true;
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// Go over each of the module's children and
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// run over it
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current.children.forEach(function (child) {
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// ignore .node files, decachine native modules throws a
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// "module did not self-register" error on second require
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if (path.extname(child.filename) !== '.node' && !visited[child.id]) {
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run(child);
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}
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});
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// Call the specified callback providing the
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// found module
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callback(current);
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})(mod);
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}
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};
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module.exports = require.decache;
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