From 6a18c72bbf3f2f02805e673c27f1340543ba52db Mon Sep 17 00:00:00 2001
From: Martin Aeschlimann <martinae@microsoft.com>
Date: Tue, 23 Jun 2020 22:58:54 +0200
Subject: [PATCH] add library loader

---
 .../server/build/javaScriptLibraryLoader.js   | 132 ++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 extensions/html-language-features/server/build/javaScriptLibraryLoader.js

diff --git a/extensions/html-language-features/server/build/javaScriptLibraryLoader.js b/extensions/html-language-features/server/build/javaScriptLibraryLoader.js
new file mode 100644
index 00000000000..85792138ba4
--- /dev/null
+++ b/extensions/html-language-features/server/build/javaScriptLibraryLoader.js
@@ -0,0 +1,132 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+// a webpack loader that bundles all library definitions (d.ts) for the embedded JavaScript engine.
+
+const path = require('path');
+const fs = require('fs');
+
+const TYPESCRIPT_LIB_SOURCE = path.join(__dirname, '../../../node_modules/typescript/lib');
+const JQUERY_DTS = path.join(__dirname, '../lib/jquery.d.ts');
+
+module.exports = function () {
+	function getFileName(name) {
+		return (name === '' ? 'lib.d.ts' : `lib.${name}.d.ts`);
+	}
+	function readLibFile(name) {
+		var srcPath = path.join(TYPESCRIPT_LIB_SOURCE, getFileName(name));
+		return fs.readFileSync(srcPath).toString();
+	}
+
+	var queue = [];
+	var in_queue = {};
+
+	var enqueue = function (name) {
+		if (in_queue[name]) {
+			return;
+		}
+		in_queue[name] = true;
+		queue.push(name);
+	};
+
+	enqueue('es6');
+
+	var result = [];
+	while (queue.length > 0) {
+		var name = queue.shift();
+		var contents = readLibFile(name);
+		var lines = contents.split(/\r\n|\r|\n/);
+
+		var outputLines = [];
+		for (let i = 0; i < lines.length; i++) {
+			let m = lines[i].match(/\/\/\/\s*<reference\s*lib="([^"]+)"/);
+			if (m) {
+				enqueue(m[1]);
+			}
+			outputLines.push(lines[i]);
+		}
+
+		result.push({
+			name: getFileName(name),
+			output: `"${escapeText(outputLines.join('\n'))}"`
+		});
+	}
+
+	const jquerySource = fs.readFileSync(JQUERY_DTS).toString();
+	var lines = jquerySource.split(/\r\n|\r|\n/);
+	result.push({
+		name: 'jquery',
+		output: `"${escapeText(lines.join('\n'))}"`
+	});
+
+	strResult = `\nconst libs : { [name:string]: string; } = {\n`
+	for (let i = result.length - 1; i >= 0; i--) {
+		strResult += `"${result[i].name}": ${result[i].output},\n`;
+	}
+	strResult += `\n};`
+
+	strResult += `export function loadLibrary(name: string) : string {\n return libs[name] || ''; \n}`;
+
+	return strResult;
+}
+
+/**
+ * Escape text such that it can be used in a javascript string enclosed by double quotes (")
+ */
+function escapeText(text) {
+	// See http://www.javascriptkit.com/jsref/escapesequence.shtml
+	var _backspace = '\b'.charCodeAt(0);
+	var _formFeed = '\f'.charCodeAt(0);
+	var _newLine = '\n'.charCodeAt(0);
+	var _nullChar = 0;
+	var _carriageReturn = '\r'.charCodeAt(0);
+	var _tab = '\t'.charCodeAt(0);
+	var _verticalTab = '\v'.charCodeAt(0);
+	var _backslash = '\\'.charCodeAt(0);
+	var _doubleQuote = '"'.charCodeAt(0);
+
+	var startPos = 0, chrCode, replaceWith = null, resultPieces = [];
+
+	for (var i = 0, len = text.length; i < len; i++) {
+		chrCode = text.charCodeAt(i);
+		switch (chrCode) {
+			case _backspace:
+				replaceWith = '\\b';
+				break;
+			case _formFeed:
+				replaceWith = '\\f';
+				break;
+			case _newLine:
+				replaceWith = '\\n';
+				break;
+			case _nullChar:
+				replaceWith = '\\0';
+				break;
+			case _carriageReturn:
+				replaceWith = '\\r';
+				break;
+			case _tab:
+				replaceWith = '\\t';
+				break;
+			case _verticalTab:
+				replaceWith = '\\v';
+				break;
+			case _backslash:
+				replaceWith = '\\\\';
+				break;
+			case _doubleQuote:
+				replaceWith = '\\"';
+				break;
+		}
+		if (replaceWith !== null) {
+			resultPieces.push(text.substring(startPos, i));
+			resultPieces.push(replaceWith);
+			startPos = i + 1;
+			replaceWith = null;
+		}
+	}
+	resultPieces.push(text.substring(startPos, len));
+	return resultPieces.join('');
+}