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/integration/tw_import_sbx.js

@@ -0,0 +1,79 @@
+const Runtime = require('../../src/engine/runtime');
+const sb2 = require('../../src/serialization/sb2');
+const {test} = require('tap');
+
+test('importing ScratchX/.sbx project', async t => {
+    const rt = new Runtime();
+
+    const deserialized = await sb2.deserialize(
+        {
+            objName: 'Stage',
+            scripts: [
+                [0, 0, [['Text to Speech.speak_text', 'Hello!']]],
+                [788, 33, [['Spotify\u001feveryBar']]],
+                [100, 10, [['Weather extension\u001fgetWeather', 'temperature', 'Cambridge, MA']]],
+                [60, 40, [['Synth Extension.setEffect', 'glide', 10]]]
+            ],
+            sounds: [],
+            costumes: [],
+            children: [],
+            info: {
+                savedExtensions: [
+                    {
+                        menus: {
+                            // not important for this test
+                        },
+                        extensionName: 'Spotify',
+                        javascriptURL: 'https://ericrosenbaum.github.io/spotify-extension/extension.js',
+                        blockSpecs: [
+                            // not important for this test
+                        ]
+                    },
+                    {
+                        extensionName: 'Weather extension',
+                        javascriptURL: 'http://khanning.github.io/scratch-weather-extension/weather_extension.js'
+                    }
+                ]
+            }
+        },
+        rt
+    );
+
+    const extensionIDs = deserialized.extensions.extensionIDs;
+    t.equal(extensionIDs.size, 4);
+    t.ok(extensionIDs.has('sbxtexttospeech'));
+    t.ok(extensionIDs.has('sbxspotify'));
+    t.ok(extensionIDs.has('sbxweatherextension'));
+    t.ok(extensionIDs.has('sbxsynthextension'));
+
+    const extensionURLs = deserialized.extensions.extensionURLs;
+    t.equal(extensionURLs.size, 2);
+    t.equal(extensionURLs.get('sbxspotify'), 'https://ericrosenbaum.github.io/spotify-extension/extension.js');
+    t.equal(extensionURLs.get('sbxweatherextension'), 'http://khanning.github.io/scratch-weather-extension/weather_extension.js');
+
+    const stage = deserialized.targets[0];
+    const blocks = Object.values(stage.blocks._blocks);
+
+    const textToSpeech = blocks.find(i => i.opcode === 'sbxtexttospeech_speak_text');
+    t.type(textToSpeech, 'object');
+    t.type(textToSpeech.inputs['0'], 'object');
+    t.type(textToSpeech.inputs['1'], 'undefined');
+
+    const spotify = blocks.find(i => i.opcode === 'sbxspotify_everyBar');
+    t.type(spotify, 'object');
+    t.type(spotify.inputs['0'], 'undefined');
+
+    const weather = blocks.find(i => i.opcode === 'sbxweatherextension_getWeather');
+    t.type(weather, 'object');
+    t.type(weather.inputs['0'], 'object');
+    t.type(weather.inputs['1'], 'object');
+    t.type(weather.inputs['2'], 'undefined');
+
+    const synth = blocks.find(i => i.opcode === 'sbxsynthextension_setEffect');
+    t.type(synth, 'object');
+    t.type(synth.inputs['0'], 'object');
+    t.type(synth.inputs['1'], 'object');
+    t.type(synth.inputs['2'], 'undefined');
+
+    t.end();
+});