add xml-escape typings (#35449)

types/xml-escape/index.d.ts

@@ -0,0 +1,13 @@
+// Type definitions for xml-escape 1.1
+// Project: https://github.com/miketheprogrammer/xml-escape
+// Definitions by: Charles Kenney <https://github.com/charliekenney23>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/**
+ * Escape an XML string
+ *
+ * @param string String of XML to escape
+ * @param ignore Characters to ignore
+ */
+declare function escape(string: string, ignore?: string): string;
+export = escape;

types/xml-escape/tsconfig.json

@@ -0,0 +1,16 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": ["es6"],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": ["../"],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": ["index.d.ts", "xml-escape-tests.ts"]
+}

types/xml-escape/tslint.json

@@ -0,0 +1,3 @@
+{
+    "extends": "dtslint/dt.json"
+}

types/xml-escape/xml-escape-tests.ts

@@ -0,0 +1,20 @@
+/// <reference types="node" />
+
+import xmlEscape = require("xml-escape");
+
+const xml = `
+<message>
+  <to>Barack Obama</to>
+  <from>Joe Biden</from>
+  <subject>Cats</subject>
+  <content>I freakin' love cats!!&!</content
+</message>
+`;
+
+const fullEscaped = xmlEscape(xml); // $ExpectType string
+const preservingApostrophe = xmlEscape(xml, "&"); // $ExpectType string
+
+console.info({
+    fullEscaped,
+    preservingApostrophe
+});