Initial commit of 001code-html Scratch frontend project.

Includes scratch-gui, scratch-vm, scratch-blocks, scratch-render, scratch-l10n, and deployment config.

Co-authored-by: Cursor <cursoragent@cursor.com>

scratch-vm/test/fixtures/make-test-storage.js

@@ -0,0 +1,47 @@
+const ScratchStorage = require('scratch-storage');
+
+const ASSET_SERVER = 'https://cdn.assets.scratch.mit.edu/';
+const PROJECT_SERVER = 'https://cdn.projects.scratch.mit.edu/';
+
+/**
+ * @param {Asset} asset - calculate a URL for this asset.
+ * @returns {string} a URL to download a project file.
+ */
+const getProjectUrl = function (asset) {
+    const assetIdParts = asset.assetId.split('.');
+    const assetUrlParts = [PROJECT_SERVER, 'internalapi/project/', assetIdParts[0], '/get/'];
+    if (assetIdParts[1]) {
+        assetUrlParts.push(assetIdParts[1]);
+    }
+    return assetUrlParts.join('');
+};
+
+/**
+ * @param {Asset} asset - calculate a URL for this asset.
+ * @returns {string} a URL to download a project asset (PNG, WAV, etc.)
+ */
+const getAssetUrl = function (asset) {
+    const assetUrlParts = [
+        ASSET_SERVER,
+        'internalapi/asset/',
+        asset.assetId,
+        '.',
+        asset.dataFormat,
+        '/get/'
+    ];
+    return assetUrlParts.join('');
+};
+
+/**
+ * Construct a new instance of ScratchStorage and provide it with default web sources.
+ * @returns {ScratchStorage} - an instance of ScratchStorage, ready to be used for tests.
+ */
+const makeTestStorage = function () {
+    const storage = new ScratchStorage();
+    const AssetType = storage.AssetType;
+    storage.addWebStore([AssetType.Project], getProjectUrl);
+    storage.addWebStore([AssetType.ImageVector, AssetType.ImageBitmap, AssetType.Sound], getAssetUrl);
+    return storage;
+};
+
+module.exports = makeTestStorage;