Add type definitions for gulp-install

gulp-install/gulp-install-tests.ts

@@ -0,0 +1,25 @@
+/// <reference path="gulp-install.d.ts" />
+/// <reference path="../gulp/gulp.d.ts" />
+
+import * as gulp from 'gulp';
+import * as install from 'gulp-install';
+
+// Examples taken from https://www.npmjs.com/package/gulp-install
+
+// Usage in a gulp stream
+gulp.src('src')
+  .pipe(install());
+
+// Options
+install({
+  production: true,
+  ignoreScripts: true,
+  noOptional: true,
+  allowRoot: true,
+  args: ['one', 'two', 'three']
+});
+
+// Options: args only as a string
+install({
+  args: 'one'
+});

gulp-install/gulp-install.d.ts

@@ -0,0 +1,22 @@
+// Type definitions for gulp-install v0.6.0
+// Project: https://www.npmjs.com/package/gulp-install
+// Definitions by: Peter Juras <https://github.com/peterjuras>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+/// <reference path="../node/node.d.ts" />
+
+declare module "gulp-install" {
+  interface Options {
+    production?: boolean;
+    ignoreScripts?: boolean;
+    noOptional?: boolean;
+    allowRoot?: boolean;
+    args?: string | string[];
+  }
+
+  interface Install {
+    (options?: Options) : NodeJS.ReadWriteStream;
+  }
+
+  const install : Install;
+  export = install;
+}