[react-packager] implement /assets endpoint to serve assets

packager/react-packager/src/DependencyResolver/haste/DependencyGraph/__mocks__/fs.js

@@ -1,109 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-'use strict';
-
-var fs = jest.genMockFromModule('fs');
-
-fs.realpath.mockImpl(function(filepath, callback) {
-  var node;
-  try {
-    node = getToNode(filepath);
-  } catch (e) {
-    return callback(e);
-  }
-  if (node && typeof node === 'object' && node.SYMLINK != null) {
-    return callback(null, node.SYMLINK);
-  }
-  callback(null, filepath);
-});
-
-fs.readdir.mockImpl(function(filepath, callback) {
-  var node;
-  try {
-    node = getToNode(filepath);
-    if (node && typeof node === 'object' && node.SYMLINK != null) {
-      node = getToNode(node.SYMLINK);
-    }
-  } catch (e) {
-    return callback(e);
-  }
-
-  if (!(node && typeof node === 'object' && node.SYMLINK == null)) {
-    return callback(new Error(filepath + ' is not a directory.'));
-  }
-
-  callback(null, Object.keys(node));
-});
-
-fs.readFile.mockImpl(function(filepath, encoding, callback) {
-  try {
-    var node = getToNode(filepath);
-    // dir check
-    if (node && typeof node === 'object' && node.SYMLINK == null) {
-      callback(new Error('Trying to read a dir, ESIDR, or whatever'));
-    }
-    return callback(null, node);
-  } catch (e) {
-    return callback(e);
-  }
-});
-
-fs.lstat.mockImpl(function(filepath, callback) {
-  var node;
-  try {
-    node = getToNode(filepath);
-  } catch (e) {
-    return callback(e);
-  }
-
-  if (node && typeof node === 'object' && node.SYMLINK == null) {
-    callback(null, {
-      isDirectory: function() {
-        return true;
-      },
-      isSymbolicLink: function() {
-        return false;
-      }
-    });
-  } else {
-    callback(null, {
-      isDirectory: function() {
-        return false;
-      },
-      isSymbolicLink: function() {
-        if (typeof node === 'object' && node.SYMLINK) {
-          return true;
-        }
-        return false;
-      }
-    });
-  }
-});
-
-var filesystem;
-
-fs.__setMockFilesystem = function(object) {
-  filesystem = object;
-  return filesystem;
-};
-
-function getToNode(filepath) {
-  var parts = filepath.split('/');
-  if (parts[0] !== '') {
-    throw new Error('Make sure all paths are absolute.');
-  }
-  var node = filesystem;
-  parts.slice(1).forEach(function(part) {
-    node = node[part];
-  });
-
-  return node;
-}
-
-module.exports = fs;

packager/react-packager/src/DependencyResolver/haste/DependencyGraph/__tests__/DependencyGraph-test.js

@@ -14,6 +14,7 @@ jest
   .dontMock('absolute-path')
   .dontMock('../docblock')
   .dontMock('../../replacePatterns')
+  .dontMock('../../../../lib/extractAssetResolution')
   .setMock('../../../ModuleDescriptor', function(data) {return data;});
 
 describe('DependencyGraph', function() {

packager/react-packager/src/DependencyResolver/haste/DependencyGraph/index.js

@@ -18,6 +18,7 @@ var isAbsolutePath = require('absolute-path');
 var debug = require('debug')('DependecyGraph');
 var util = require('util');
 var declareOpts = require('../../../lib/declareOpts');
+var extractAssetResolution = require('../../../lib/extractAssetResolution');
 
 var readFile = Promise.promisify(fs.readFile);
 var readDir = Promise.promisify(fs.readdir);
@@ -421,7 +422,7 @@ DependecyGraph.prototype._processModule = function(modulePath) {
   var module;
 
   if (this._assetExts.indexOf(extname(modulePath)) > -1) {
-    var assetData = extractResolutionPostfix(this._lookupName(modulePath));
+    var assetData = extractAssetResolution(this._lookupName(modulePath));
     moduleData.id = assetData.assetName;
     moduleData.resolution = assetData.resolution;
     moduleData.isAsset = true;
@@ -772,28 +773,6 @@ function extname(name) {
   return path.extname(name).replace(/^\./, '');
 }
 
-function extractResolutionPostfix(filename) {
-  var ext = extname(filename);
-  var re = new RegExp('@([\\d\\.]+)x\\.' + ext + '$');
-
-  var match = filename.match(re);
-  var resolution;
-
-  if (!(match && match[1])) {
-    resolution = 1;
-  } else {
-    resolution = parseFloat(match[1], 10);
-    if (isNaN(resolution)) {
-      resolution = 1;
-    }
-  }
-
-  return {
-    resolution: resolution,
-    assetName: match ? filename.replace(re, '.' + ext) : filename,
-  };
-}
-
 function NotFoundError() {
   Error.call(this);
   Error.captureStackTrace(this, this.constructor);