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/variable_monitor_reset.js

@@ -0,0 +1,42 @@
+const path = require('path');
+const test = require('tap').test;
+const makeTestStorage = require('../fixtures/make-test-storage');
+const readFileToBuffer = require('../fixtures/readProjectFile').readFileToBuffer;
+const VirtualMachine = require('../../src/index');
+
+const projectUri = path.resolve(__dirname, '../fixtures/monitored_variables.sb3');
+const project = readFileToBuffer(projectUri);
+
+const anotherProjectUri = path.resolve(__dirname, '../fixtures/default.sb2');
+const anotherProject = readFileToBuffer(anotherProjectUri);
+
+test('importing one project after the other resets monitored variables', t => {
+    const vm = new VirtualMachine();
+    vm.attachStorage(makeTestStorage());
+
+    // Start VM, load project, and run
+    vm.start();
+    vm.clear();
+    vm.setCompatibilityMode(false);
+    vm.setTurboMode(false);
+    vm.loadProject(project).then(() => {
+        const refSprite = vm.runtime.targets[1];
+        const refVarId = Object.keys(refSprite.variables)[0];
+        const refBlock = vm.runtime.monitorBlocks.getBlock(refVarId);
+        t.ok(refBlock);
+        const jamalSprite = vm.runtime.targets[2];
+        const jamalVarId = Object.keys(jamalSprite.variables)[0];
+        const jamalBlock = vm.runtime.monitorBlocks.getBlock(jamalVarId);
+        t.ok(jamalBlock);
+        vm.loadProject(anotherProject).then(() => {
+            // Blocks from the previously loaded project should be gone.
+            const refVarBlock = vm.runtime.monitorBlocks.getBlock(refVarId);
+            t.notOk(refVarBlock);
+            const jamalVarBlock = vm.runtime.monitorBlocks.getBlock(jamalVarId);
+            t.notOk(jamalVarBlock);
+
+            vm.quit();
+            t.end();
+        });
+    });
+});