update

node_modules/resolve-dependency-path/index.js

@@ -0,0 +1,68 @@
+var path = require('path');
+
+/**
+ * @param  {Object} options
+ * @param  {String} options.dependency - The dependency name to resolve
+ * @param  {String} options.filename - Filename that contains the dependency
+ * @param  {String} options.directory - Root of all files
+ * @return {String} Absolute/resolved path of the dependency
+ */
+module.exports = function({dependency: dep, filename, directory} = {}) {
+  if (!dep) { throw new Error('dependency path not given'); }
+  if (!filename) { throw new Error('filename not given'); }
+  if (!directory) { throw new Error('directory not given'); }
+
+  var filepath = getDependencyPath(dep, filename, directory);
+  var ext = getDependencyExtension(dep, filename);
+
+  return filepath + ext;
+};
+
+/**
+ * @param  {String}  dep
+ * @return {Boolean}
+ */
+function isRelative(dep) {
+  return dep.indexOf('..') === 0 || dep.indexOf('.') === 0;
+}
+
+/**
+ * @param  {String} dep
+ * @param  {String} filename
+ * @param  {String} directory
+ * @return {String} Absolute path for the dependency
+ */
+function getDependencyPath(dep, filename, directory) {
+  if (isRelative(dep)) {
+    return path.resolve(path.dirname(filename), dep);
+  }
+
+  return path.resolve(directory, dep);
+}
+
+/**
+ * @param  {String} dep
+ * @param  {String} filename
+ * @return {String} The determined extension for the dependency (or empty if already supplied)
+ */
+function getDependencyExtension(dep, filename) {
+  var depExt = path.extname(dep);
+  var fileExt = path.extname(filename);
+
+  if (!depExt) {
+    return fileExt;
+  }
+
+  // If a dependency starts with a period AND it doesn't already end
+  // in .js AND doesn't use a custom plugin, add .js back to path
+  if (fileExt === '.js' && depExt !== '.js' && dep.indexOf('!') < 0) {
+    return fileExt;
+  }
+
+  // If using a SystemJS style plugin
+  if (depExt.indexOf('!') > -1) {
+    return depExt.substring(0, depExt.indexOf('!'));
+  }
+
+  return '';
+}