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/unit/virtual-machine_tw.js

@@ -0,0 +1,93 @@
+const test = require('tap').test;
+const VirtualMachine = require('../../src/virtual-machine');
+const RenderedTarget = require('../../src/sprites/rendered-target');
+const Sprite = require('../../src/sprites/sprite');
+const Variable = require('../../src/engine/variable');
+
+test('emitTargetsUpdate targetList is lazy', t => {
+    const vm = new VirtualMachine();
+    let calledToJSON = false;
+    vm.runtime.targets = [{
+        toJSON () {
+            calledToJSON = true;
+            return {};
+        }
+    }];
+    let targetsUpdateEvent;
+    vm.on('targetsUpdate', e => {
+        targetsUpdateEvent = e;
+    });
+    vm.emitTargetsUpdate();
+    t.equal(calledToJSON, false);
+    void targetsUpdateEvent.targetList; // should trigger lazy compute
+    t.equal(calledToJSON, true);
+    t.end();
+});
+
+test('non-primitive values in lists and variables converted to strings', t => {
+    const vm = new VirtualMachine();
+    const sprite = new Sprite();
+    const target = new RenderedTarget(sprite, vm.runtime);
+
+    target.variables.var1 = new Variable('var', 'test var', Variable.SCALAR_TYPE, false);
+    target.variables.var1.value = null;
+
+    target.variables.var2 = new Variable('var2', 'test var', Variable.SCALAR_TYPE, false);
+    target.variables.var2.value = undefined;
+
+    target.variables.var3 = new Variable('var3', 'test var', Variable.SCALAR_TYPE, false);
+    target.variables.var3.value = {};
+
+    target.variables.var4 = new Variable('var4', 'test var', Variable.SCALAR_TYPE, false);
+    target.variables.var4.value = 1;
+
+    target.variables.var5 = new Variable('var5', 'test var', Variable.SCALAR_TYPE, false);
+    target.variables.var5.value = 'abc';
+
+    target.variables.var6 = new Variable('var6', 'test var', Variable.SCALAR_TYPE, false);
+    target.variables.var6.value = false;
+
+    target.variables.list = new Variable('list', 'test list', Variable.LIST_TYPE, false);
+    target.variables.list.value = ['abc', false, 1, null, undefined, {}];
+
+    vm.runtime.addTarget(target);
+
+    const json = JSON.parse(vm.toJSON());
+
+    t.deepEqual(json.targets[0].variables.var1[1], 'null');
+    t.deepEqual(json.targets[0].variables.var2[1], 'undefined');
+    t.deepEqual(json.targets[0].variables.var3[1], '[object Object]');
+    t.deepEqual(json.targets[0].variables.var4[1], 1);
+    t.deepEqual(json.targets[0].variables.var5[1], 'abc');
+    t.deepEqual(json.targets[0].variables.var6[1], false);
+
+    t.deepEqual(json.targets[0].lists.list[1], ['abc', false, 1, 'null', 'undefined', '[object Object]']);
+
+    t.end();
+});
+
+test('addSound error handling when sprite does not exist', async t => {
+    t.plan(1);
+    const vm = new VirtualMachine();
+    const id = 'Inva1id5pri731D$!';
+    try {
+        await vm.addSound({
+            thisObjectDoesNotMatter: true
+        }, id);
+    } catch (e) {
+        if (e && e.message === `No target with ID: ${id}`) {
+            t.pass();
+        }
+    }
+    t.end();
+});
+
+test('convertToPackagedRuntime forwards to runtime', t => {
+    t.plan(1);
+    const vm = new VirtualMachine();
+    vm.runtime.convertToPackagedRuntime = () => {
+        t.pass();
+    };
+    vm.convertToPackagedRuntime();
+    t.end();
+});