Add type definitions for gulp-json-editor

gulp-json-editor/gulp-json-editor-tests.ts

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+/// <reference path="gulp-json-editor.d.ts" />
+/// <reference path="../gulp/gulp.d.ts" />
+
+import * as gulp from 'gulp';
+import * as jeditor from 'gulp-json-editor';
+
+// Samples taken from https://www.npmjs.com/package/gulp-json-editor
+
+/*
+  edit JSON object by merging with user specific object
+*/
+gulp.src("./manifest.json")
+  .pipe(jeditor({
+    'version': '1.2.3'
+  }))
+  .pipe(gulp.dest("./dest"));
+
+/*
+  edit JSON object by using user specific function
+*/
+gulp.src("./manifest.json")
+  .pipe(jeditor(function(json : any) {
+    json.version = "1.2.3";
+    return json; // must return JSON object.
+  }))
+  .pipe(gulp.dest("./dest"));
+
+/*
+  specify js-beautify option
+*/
+gulp.src("./manifest.json")
+  .pipe(jeditor({
+    'version': '1.2.3'
+  },
+  // the second argument is passed to js-beautify as its option
+  {
+    'indent_char': '\t',
+    'indent_size': 1
+  }))
+  .pipe(gulp.dest("./dest"));

gulp-json-editor/gulp-json-editor.d.ts

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+// Type definitions for gulp-json-editor v2.2.1
+// Project: https://www.npmjs.com/package/gulp-json-editor
+// Definitions by: Peter Juras <https://github.com/peterjuras>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+/// <reference path="../node/node.d.ts" />
+/// <reference path="../js-beautify/js-beautify.d.ts" />
+
+declare module "gulp-json-editor" {
+
+  interface JEditor {
+    (mergeWith: any | ((json : any) => any ),
+    jsBeautifyOptions? : JsBeautifyOptions ) : NodeJS.ReadWriteStream;
+  }
+
+  const jeditor : JEditor;
+  export = jeditor;
+}