109 lines
2.9 KiB
JavaScript
109 lines
2.9 KiB
JavaScript
var Module = require('module').Module;
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var nodePath = require('path');
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var appModulePaths = [];
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var old_nodeModulePaths = Module._nodeModulePaths;
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var allowedDirs = {};
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function checkIfDirAllowed(from) {
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var currentDir = from;
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while (currentDir) {
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if (allowedDirs[currentDir]) {
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return true;
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}
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var basename = nodePath.basename(currentDir);
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if (basename === 'node_modules') {
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return false;
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}
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var parentDir = nodePath.dirname(currentDir);
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if (parentDir === currentDir) {
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break;
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}
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currentDir = parentDir;
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}
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return true;
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}
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Module._nodeModulePaths = function(from) {
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var paths = old_nodeModulePaths.call(this, from);
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// Only include the app module path for top-level modules
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// that were not installed or that were explicitly allowed
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if (checkIfDirAllowed(from)) {
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paths = paths.concat(appModulePaths);
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}
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return paths;
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};
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function enableForDir(dir) {
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allowedDirs[dir] = true;
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}
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function addPath(path, parent) {
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// Anable app-module-path to work under any directories that are explicitly added
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enableForDir(path);
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function addPathHelper(targetArray) {
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path = nodePath.normalize(path);
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if (targetArray && targetArray.indexOf(path) === -1) {
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targetArray.push(path);
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}
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}
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path = nodePath.normalize(path);
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if (appModulePaths.indexOf(path) === -1) {
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appModulePaths.push(path);
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// Enable the search path for the current top-level module
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if (require.main) {
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addPathHelper(require.main.paths);
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}
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parent = parent || module.parent;
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// Also modify the paths of the module that was used to load the app-module-paths module
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// and all of it's parents
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while(parent && parent !== require.main) {
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addPathHelper(parent.paths);
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parent = parent.parent;
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}
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}
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}
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function removePath(path) {
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function removePathHelper(targetArray) {
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path = nodePath.normalize(path);
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if (!targetArray) return;
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var index = targetArray.indexOf(path);
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if (index === -1) return;
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targetArray.splice(index, 1);
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}
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var parent;
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path = nodePath.normalize(path);
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var index = appModulePaths.indexOf(path);
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if (index > -1) {
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appModulePaths.splice(index, 1);
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// Enable the search path for the current top-level module
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if (require.main) removePathHelper(require.main.paths);
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parent = module.parent;
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// Also modify the paths of the module that was used to load the app-module-paths module
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// and all of it's parents
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while(parent && parent !== require.main) {
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removePathHelper(parent.paths);
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parent = parent.parent;
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}
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}
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}
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exports.addPath = addPath;
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exports.removePath = removePath;
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exports.enableForDir = enableForDir;
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