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/tw_extension_api_common.js

@@ -0,0 +1,34 @@
+const ScratchCommon = require('../../src/extension-support/tw-extension-api-common');
+const {test} = require('tap');
+
+test('ArgumentType', t => {
+    t.equal(ScratchCommon.ArgumentType.ANGLE, 'angle');
+    t.end();
+});
+
+test('BlockType', t => {
+    t.equal(ScratchCommon.BlockType.BOOLEAN, 'Boolean');
+    t.end();
+});
+
+test('TargetType', t => {
+    t.equal(ScratchCommon.TargetType.SPRITE, 'sprite');
+    t.end();
+});
+
+test('Cast', t => {
+    // Cast is thoroughly tested elsewhere. We just want to make sure that the public methods
+    // don't get deleted unexpectedly.
+    t.equal(ScratchCommon.Cast.toNumber('5'), 5);
+    t.equal(ScratchCommon.Cast.toBoolean('true'), true);
+    t.equal(ScratchCommon.Cast.toString('something'), 'something');
+    t.same(ScratchCommon.Cast.toRgbColorList('#abcdef'), [0xab, 0xcd, 0xef]);
+    t.same(ScratchCommon.Cast.toRgbColorObject('#abcdef'), {r: 0xab, g: 0xcd, b: 0xef});
+    t.equal(ScratchCommon.Cast.isWhiteSpace(''), true);
+    t.equal(ScratchCommon.Cast.compare(1, 2), -1);
+    t.equal(ScratchCommon.Cast.isInt(5.5), false);
+    t.type(ScratchCommon.Cast.LIST_INVALID, 'string');
+    t.type(ScratchCommon.Cast.LIST_ALL, 'string');
+    t.equal(ScratchCommon.Cast.toListIndex('1.5', 10, false), 1);
+    t.end();
+});