Create directory on output (#4507)

package.json

@@ -36,6 +36,7 @@
         "glob": "^7.1.1",
         "js-yaml": "^3.7.0",
         "minimatch": "^3.0.4",
+        "mkdirp": "^0.5.1",
         "resolve": "^1.3.2",
         "semver": "^5.3.0",
         "tslib": "^1.8.0",
@@ -51,6 +52,7 @@
         "@types/glob": "^5.0.30",
         "@types/js-yaml": "^3.5.31",
         "@types/minimatch": "^2.0.29",
+        "@types/mkdirp": "^0.5.2",
         "@types/mocha": "^2.2.35",
         "@types/node": "^7.0.29",
         "@types/resolve": "^0.0.4",

src/tslintCli.ts

@@ -19,6 +19,8 @@
 
 import commander = require("commander");
 import * as fs from "fs";
+import * as mkdirp from "mkdirp";
+import * as path from "path";
 
 import { Linter } from "./linter";
 import { run } from "./runner";
@@ -275,10 +277,12 @@ if (argv.typeCheck) {
     }
 }
 
-const outputStream: NodeJS.WritableStream =
-    argv.out === undefined
-        ? process.stdout
-        : fs.createWriteStream(argv.out, { flags: "w+", mode: 420 });
+let outputStream: NodeJS.WritableStream = process.stdout;
+
+if (argv.out !== undefined) {
+    mkdirp.sync(path.dirname(argv.out));
+    outputStream = fs.createWriteStream(argv.out, { flags: "w+", mode: 420 });
+}
 
 run(
     {

yarn.lock

@@ -43,6 +43,13 @@
   resolved "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-2.0.29.tgz#5002e14f75e2d71e564281df0431c8c1b4a2a36a"
   integrity sha1-UALhT3Xi1x5WQoHfBDHIwbSio2o=
 
+"@types/mkdirp@^0.5.2":
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/@types/mkdirp/-/mkdirp-0.5.2.tgz#503aacfe5cc2703d5484326b1b27efa67a339c1f"
+  integrity sha512-U5icWpv7YnZYGsN4/cmh3WD2onMY0aJIiTE6+51TwJCttdHvtCYmkBNOobHlXwrJRL0nkH9jH4kD+1FAdMN4Tg==
+  dependencies:
+    "@types/node" "*"
+
 "@types/mocha@^2.2.35":
   version "2.2.41"
   resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-2.2.41.tgz#e27cf0817153eb9f2713b2d3f6c68f1e1c3ca608"