build: run tslint on tool files (#3436)

* Since we had a lot of TSLint issues on our tooling scripts & tasks, we should run TSLint on those as well.
* Also updates Dgeni to latest version, because it now supports TypeScript typings.

package.json

@@ -54,7 +54,7 @@
     "axe-core": "^2.1.7",
     "axe-webdriverjs": "^0.5.0",
     "conventional-changelog": "^1.1.0",
-    "dgeni": "^0.4.2",
+    "dgeni": "^0.4.7",
     "dgeni-packages": "^0.16.5",
     "firebase-admin": "^4.0.6",
     "firebase-tools": "^2.2.1",

tools/gulp/tasks/docs.ts

@@ -1,12 +1,14 @@
-import gulp = require('gulp');
+import {task, src, dest} from 'gulp';
+import {Dgeni} from 'dgeni';
+import * as path from 'path';
+
+// Node packages that lack of types.
 const markdown = require('gulp-markdown');
 const transform = require('gulp-transform');
 const highlight = require('gulp-highlight-files');
 const rename = require('gulp-rename');
 const flatten = require('gulp-flatten');
 const hljs = require('highlight.js');
-import {task} from 'gulp';
-import * as path from 'path';
 
 // Our docs contain comments of the form `<!-- example(...) -->` which serve as placeholders where
 // example code should be inserted. We replace these comments with divs that have a
@@ -19,10 +21,10 @@ const EXAMPLE_PATTERN = /<!--\W*example\(([^)]+)\)\W*-->/g;
 // documentation page. Using a RegExp to rewrite links in HTML files to work in the docs.
 const LINK_PATTERN = /(<a[^>]*) href="([^"]*)"/g;
 
-gulp.task('docs', ['markdown-docs', 'highlight-docs', 'api-docs'])
+task('docs', ['markdown-docs', 'highlight-docs', 'api-docs']);
 
-gulp.task('markdown-docs', () => {
-  return gulp.src(['src/lib/**/*.md', 'guides/*.md'])
+task('markdown-docs', () => {
+  return src(['src/lib/**/*.md', 'guides/*.md'])
       .pipe(markdown({
         // Add syntax highlight using highlight.js
         highlight: (code: string, language: string) => {
@@ -36,28 +38,27 @@ gulp.task('markdown-docs', () => {
         }
       }))
       .pipe(transform(transformMarkdownFiles))
-      .pipe(gulp.dest('dist/docs/markdown'));
+      .pipe(dest('dist/docs/markdown'));
 });
 
-gulp.task('highlight-docs', () => {
+task('highlight-docs', () => {
   // rename files to fit format: [filename]-[filetype].html
   const renameFile = (path: any) => {
     const extension = path.extname.slice(1);
     path.basename = `${path.basename}-${extension}`;
   };
 
-  return gulp.src('src/examples/**/*.+(html|css|ts)')
+  return src('src/examples/**/*.+(html|css|ts)')
     .pipe(flatten())
     .pipe(rename(renameFile))
     .pipe(highlight())
-    .pipe(gulp.dest('dist/docs/examples'));
+    .pipe(dest('dist/docs/examples'));
 });
 
 task('api-docs', () => {
-  const Dgeni = require('dgeni');
   const docsPackage = require(path.resolve(__dirname, '../../dgeni'));
-  const dgeni = new Dgeni([docsPackage]);
-  return dgeni.generate();
+  const docs = new Dgeni([docsPackage]);
+  return docs.generate();
 });
 
 /** Updates the markdown file's content to work inside of the docs app. */

tools/gulp/tasks/e2e.ts

@@ -3,7 +3,7 @@ import * as path from 'path';
 
 import {SOURCE_ROOT, DIST_ROOT, PROJECT_ROOT} from '../constants';
 import {
-  tsBuildTask, sassBuildTask, copyTask, buildAppTask, execNodeTask,
+  tsBuildTask, copyTask, buildAppTask, execNodeTask,
   vendorTask, sequenceTask, serverTask
 } from '../task_helpers';
 

tools/gulp/tasks/lint.ts

@@ -12,4 +12,4 @@ gulp.task('stylelint', execNodeTask(
 ));
 
 /** Task to run TSLint against the e2e/ and src/ directories. */
-gulp.task('tslint', execNodeTask('tslint', ['-c', 'tslint.json', 'src/**/*.ts', 'e2e/**/*.ts']));
+gulp.task('tslint', execNodeTask('tslint', ['-c', 'tslint.json', '+(src|e2e|tools)/**/*.ts']));

tools/gulp/tasks/screenshots.ts

@@ -5,7 +5,6 @@ import * as admin from 'firebase-admin';
 import {openScreenshotsBucket, openFirebaseScreenshotsDatabase} from '../task_helpers';
 import {updateGithubStatus} from '../util-functions';
 
-const request = require('request');
 const imageDiff = require('image-diff');
 
 const SCREENSHOT_DIR = './screenshots';
@@ -37,12 +36,15 @@ task('screenshots', () => {
 
 function updateFileResult(database: admin.database.Database, prNumber: string,
                           filenameKey: string, result: boolean) {
-  return database.ref(FIREBASE_REPORT).child(prNumber).child('results').child(filenameKey).set(result);
+  return getPullRequestRef(database, prNumber).child('results').child(filenameKey).set(result);
 }
 
-function updateResult(database: admin.database.Database, prNumber: string,
-                      result: boolean) {
-  return database.ref(FIREBASE_REPORT).child(prNumber).child('result').set(result).then(() => result);
+function updateResult(database: admin.database.Database, prNumber: string, result: boolean) {
+  return getPullRequestRef(database, prNumber).child('result').set(result).then(() => result);
+}
+
+function getPullRequestRef(database: admin.database.Database, prNumber: string) {
+  return database.ref(FIREBASE_REPORT).child(prNumber);
 }
 
 function updateTravis(database: admin.database.Database,
@@ -58,7 +60,7 @@ function updateTravis(database: admin.database.Database,
 function getScreenshotFiles(database: admin.database.Database) {
   let bucket = openScreenshotsBucket();
   return bucket.getFiles({ prefix: 'golds/' }).then(function(data: any) {
-    return data[0].filter((file:any) => file.name.endsWith('.screenshot.png'));
+    return data[0].filter((file: any) => file.name.endsWith('.screenshot.png'));
   });
 }
 

tools/gulp/util-functions.ts

@@ -9,7 +9,7 @@ export function updateGithubStatus(result: boolean, prNumber: string) {
   let data = JSON.stringify({
     state: state,
     target_url: `http://material2-screenshots.firebaseapp.com/${prNumber}`,
-    context: "screenshot-diff",
+    context: 'screenshot-diff',
     description: `Screenshot test ${state}`
   });
 
@@ -20,13 +20,13 @@ export function updateGithubStatus(result: boolean, prNumber: string) {
     'Content-Length': Buffer.byteLength(data)
   };
 
-  return new Promise((resolve, reject) => {
+  return new Promise((resolve) => {
     request({
       url: `https://api.github.com/repos/angular/material2/statuses/${sha}`,
       method: 'POST',
       form: data,
       headers: headers
-    }, function (error: any, response: any, body: any){
+    }, function (error: any, response: any) {
       resolve(response.statusCode);
     });
   });