Initial commit.

Author: toddbc

README.md

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+# requirejs-resolver
+
+Allows using `import` to find modules based on requirejs config path mapping.
+
+This is specifically useful for Magento 2, which extensively uses requirejs.
+
+## Config parsing
+
+The config file is executed to find all calls to `require.config()`.
+
+## Usage
+
+    const RequireJsResolverPlugin = require('@sdinteractive/requirejs-resolver');
+
+    module.exports = {
+      resolve: {
+        plugins: [
+          new RequireJsResolverPlugin({
+            configPath: path.resolve(__dirname, 'requirejs-config.js'),
+          }),
+        ],
+      },
+    };

index.js

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+'use strict';
+
+const vm = require('vm');
+
+function RequireJsResolverPlugin(options) {
+    this.configPath = options.configPath;
+}
+
+RequireJsResolverPlugin.prototype.getConfig = function(fs) {
+    return new Promise((resolve, reject) => {
+        if (this.configData) {
+            return resolve(this.configData);
+        }
+
+        fs.readFile(this.configPath, function(err, buffer) {
+            if (err) {
+                reject(err);
+            } else {
+                resolve(buffer.toString('utf8'));
+            }
+        });
+    }).then(code => {
+        if (this.configData) {
+            return this.configData;
+        }
+
+        var sandbox = {
+            paths: {},
+            require: function() {
+            },
+        };
+        sandbox.require.addPaths = function(paths) {
+            for (var path in paths) {
+                sandbox.paths[path] = paths[path];
+            }
+        };
+        sandbox.require.config = function(config) {
+            if (config.paths) {
+                this.addPaths(config.paths);
+            }
+
+            // Used by Magento.
+            if (config.map && config.map['*']) {
+                this.addPaths(config.map['*']);
+            }
+        };
+        vm.runInNewContext(code, sandbox, {
+            filename: this.configPath,
+            displayErrors: true,
+        });
+
+        this.configData = sandbox.paths;
+        return this.configData;
+    });
+};
+
+RequireJsResolverPlugin.prototype.apply = function(resolver) {
+    resolver.plugin('module', (request, callback) => {
+        this.getConfig(resolver.fileSystem).then(config => {
+            if (config[request.request]) {
+                var nextRequest = Object.assign({}, request, { request: config[request.request] });
+                return resolver.doResolve('resolve', nextRequest, 'mapping via requirejs-config', function(err, result) {
+                    callback(err, result);
+                });
+            } else {
+                callback();
+            }
+        })
+    });
+};
+
+module.exports = RequireJsResolverPlugin;

package.json

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+{
+  "name": "@sdinteractive/requirejs-resolver",
+  "version": "1.0.0",
+  "description": "webpack resolver to find requirejs modules via requirejs config.",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/sdinteractive/webpack-requirejs-resolver.git"
+  },
+  "keywords": [
+    "webpack",
+    "requirejs"
+  ],
+  "author": "Something Digital",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/sdinteractive/webpack-requirejs-resolver/issues"
+  },
+  "homepage": "https://github.com/sdinteractive/webpack-requirejs-resolver#readme"
+}