Merge pull request #31270 from donatj/fix/ShowdownMakeMarkdown

Adds missing makeMarkdown to Showdown

types/showdown/index.d.ts

@@ -1,4 +1,4 @@
-// Type definitions for Showdown 1.7.3
+// Type definitions for Showdown 1.9.0
 // Project: https://github.com/coreyti/showdown
 // Definitions by: cbowdon <https://github.com/cbowdon>, Pei-Tang Huang <https://github.com/tan9>, Ariel-Saldana <https://github.com/arielsaldana>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
@@ -294,6 +294,14 @@ declare namespace Showdown {
          */
         makeHtml(text: string): string;
 
+        /**
+         * Converts an HTML string into a markdown string
+         * 
+         * @param src The input text (HTML)
+         * @returns The output markdown
+         */
+        makeMarkdown(src: string): string;
+
         /**
          * Setting a "local" option only affects the specified Converter object.
          *

types/showdown/showdown-tests.ts

@@ -6,6 +6,7 @@
 import showdown = require('showdown');
 
 var exampleMarkdown = '#hello, markdown',
+    exampleHTML = '<h1>hello, markdown</h1>',
     converter = new showdown.Converter();
 
 var myExt: showdown.ShowdownExtension = { type: 'output', filter: (text, converter) => { return text.replace('#', '*') } };
@@ -34,6 +35,9 @@ console.log(configuredConverter.makeHtml(exampleMarkdown));
 // should log '<p>*hello, markdown</p>'
 
 
+console.log(converter.makeMarkdown(exampleHTML));
+// should log '#hello, markdown'
+
 showdown.extension('myExt', function () {
   var matches: string[] = [];
   return [