chore: import upstream snapshot with attribution

static/js/scripts/package/node/core.js

@@ -0,0 +1,33 @@
+/**
+ * @license
+ * Copyright 2019 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @fileoverview Blockly core module for Node. It includes blockly-node.js
+ *               and adds a helper method for setting the locale.
+ */
+
+/* eslint-disable */
+'use strict';
+
+// Add a helper method to set the Blockly locale.
+Blockly.setLocale = function (locale) {
+  Blockly.Msg = Blockly.Msg || {};
+  Object.keys(locale).forEach(function (k) {
+    Blockly.Msg[k] = locale[k];
+  });
+};
+
+// Override textToDomDocument and provide Node.js alternatives to DOMParser and
+// XMLSerializer.
+if (typeof Blockly.utils.global.document !== 'object') {
+  Blockly.utils.global.DOMParser = require("jsdom/lib/jsdom/living").DOMParser;
+  Blockly.utils.global.XMLSerializer = require("jsdom/lib/jsdom/living").XMLSerializer;
+  var doc = Blockly.utils.xml.textToDomDocument(
+    '<xml xmlns="https://developers.google.com/blockly/xml"></xml>');
+  Blockly.utils.xml.document = function() {
+    return doc;
+  };
+}

static/js/scripts/package/node/index.js

@@ -0,0 +1,31 @@
+/**
+ * @license
+ * Copyright 2019 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @fileoverview Blockly module for Node. It includes Blockly core,
+ *               built-in blocks, all the generators and the English locale.
+ */
+
+/* eslint-disable */
+'use strict';
+
+// Include the EN Locale by default.
+Blockly.setLocale(En);
+
+Blockly.Blocks = Blockly.Blocks || {};
+Object.keys(BlocklyBlocks).forEach(function (k) {
+  Blockly.Blocks[k] = BlocklyBlocks[k];
+});
+
+Blockly.JavaScript = BlocklyJS;
+
+Blockly.Python = BlocklyPython;
+
+Blockly.Lua = BlocklyLua;
+
+Blockly.PHP = BlocklyPHP;
+
+Blockly.Dart = BlocklyDart;