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_save_project_sb3.js

@@ -0,0 +1,84 @@
+const {test} = require('tap');
+require('../fixtures/tw_mock_blob'); // must load Blob before VM so JSZip thinks Blob is supported
+const fs = require('fs');
+const pathUtil = require('path');
+const VirtualMachine = require('../../src/virtual-machine');
+const makeTestStorage = require('../fixtures/make-test-storage');
+const JSZip = require('@turbowarp/jszip');
+
+const fixture = fs.readFileSync(pathUtil.join(__dirname, '..', 'fixtures', 'tw-save-project-sb3.sb3'));
+
+test('saveProjectSb3', async t => {
+    t.plan(6);
+
+    const vm = new VirtualMachine();
+    vm.attachStorage(makeTestStorage());
+    await vm.loadProject(fixture);
+
+    // Test that it defaults to Blob
+    // Note: we use a mock implementation of Blob in tests
+    const blob = await vm.saveProjectSb3();
+    t.type(blob, Blob);
+
+    const buffer = await vm.saveProjectSb3('arraybuffer');
+    t.type(buffer, ArrayBuffer);
+
+    const base64 = await vm.saveProjectSb3('base64');
+    t.type(base64, 'string');
+
+    const zip = await JSZip.loadAsync(buffer);
+    t.equal((await zip.file('project.json').async('string'))[0], '{');
+    t.equal((await zip.file('d9c625ae1996b615a146ac2a7dbe74d7.svg').async('uint8array')).byteLength, 691);
+    t.equal((await zip.file('cd21514d0531fdffb22204e0ec5ed84a.svg').async('uint8array')).byteLength, 202);
+
+    t.end();
+});
+
+test('saveProjectSb3Stream', async t => {
+    t.plan(6);
+
+    const vm = new VirtualMachine();
+    vm.attachStorage(makeTestStorage());
+    await vm.loadProject(fixture);
+
+    let receivedDataEvent = false;
+    const stream = vm.saveProjectSb3Stream();
+    stream.on('data', data => {
+        if (receivedDataEvent) {
+            return;
+        }
+        receivedDataEvent = true;
+        t.type(data, Uint8Array);
+    });
+    stream.resume();
+    const buffer = await stream.accumulate();
+    t.type(buffer, ArrayBuffer);
+
+    const stream2 = vm.saveProjectSb3Stream('uint8array');
+    const uint8array = await stream2.accumulate();
+    t.type(uint8array, Uint8Array);
+
+    const zip = await JSZip.loadAsync(buffer);
+    t.equal((await zip.file('project.json').async('string'))[0], '{');
+    t.equal((await zip.file('d9c625ae1996b615a146ac2a7dbe74d7.svg').async('uint8array')).byteLength, 691);
+    t.equal((await zip.file('cd21514d0531fdffb22204e0ec5ed84a.svg').async('uint8array')).byteLength, 202);
+
+    t.end();
+});
+
+test('saveProjectSb3DontZip', async t => {
+    const vm = new VirtualMachine();
+    vm.attachStorage(makeTestStorage());
+    await vm.loadProject(fixture);
+
+    const map = vm.saveProjectSb3DontZip();
+    t.equal(map['project.json'][0], '{'.charCodeAt(0));
+    t.equal(map['d9c625ae1996b615a146ac2a7dbe74d7.svg'].byteLength, 691);
+    t.equal(map['cd21514d0531fdffb22204e0ec5ed84a.svg'].byteLength, 202);
+
+    // Make sure that the asset buffers returned are the exact same as the ones used internally, not copies.
+    const costume = vm.runtime.targets[0].getCostumes()[0];
+    t.equal(map['cd21514d0531fdffb22204e0ec5ed84a.svg'], costume.asset.data);
+
+    t.end();
+});