typescript: Fix violations of new typescript rules.

static/js/dict.ts

@@ -4,9 +4,9 @@ import * as _ from 'underscore';
  * Implementation detail of the Dict class. `key` is `k` converted to a string,
  * in lowercase if the `fold_case` option is enabled.
  */
-type KeyValue<K, V> = { k: K, v: V }
+type KeyValue<K, V> = { k: K; v: V }
 type Items<K, V> = {
-    [key: string]: KeyValue<K, V>
+    [key: string]: KeyValue<K, V>;
 }
 
 /**
@@ -64,16 +64,6 @@ export class Dict<K, V> {
         return dict;
     }
 
-    // Handle case-folding of keys and the empty string.
-    private _munge(key: K): string | undefined {
-        if (key === undefined) {
-            blueslip.error("Tried to call a Dict method with an undefined key.");
-            return;
-        }
-        const str_key = ':' + key.toString();
-        return this._fold_case ? str_key.toLowerCase() : str_key;
-    }
-
     clone(): Dict<K, V> {
         const dict = new Dict<K, V>({fold_case: this._fold_case});
         dict._items = { ...this._items };
@@ -83,7 +73,7 @@ export class Dict<K, V> {
     get(key: K): V | undefined {
         const mapping = this._items[this._munge(key)];
         if (mapping === undefined) {
-            return;
+            return undefined;
         }
         return mapping.v;
     }
@@ -123,7 +113,7 @@ export class Dict<K, V> {
 
     items(): [K, V][] {
         return _.map(_.values(this._items),
-                     (mapping: KeyValue<K, V>): [K, V] => [mapping.k, mapping.v]);
+            (mapping: KeyValue<K, V>): [K, V] => [mapping.k, mapping.v]);
     }
 
     num_items(): number {
@@ -134,11 +124,21 @@ export class Dict<K, V> {
         return _.isEmpty(this._items);
     }
 
-    each(f: (v: V, k?: K) => void) {
+    each(f: (v: V, k?: K) => void): void {
         _.each(this._items, (mapping: KeyValue<K, V>) => f(mapping.v, mapping.k));
     }
 
-    clear() {
+    clear(): void {
         this._items = {};
     }
+
+    // Handle case-folding of keys and the empty string.
+    private _munge(key: K): string | undefined {
+        if (key === undefined) {
+            blueslip.error("Tried to call a Dict method with an undefined key.");
+            return undefined;
+        }
+        const str_key = ':' + key.toString();
+        return this._fold_case ? str_key.toLowerCase() : str_key;
+    }
 }

tools/webpack-helpers.ts

@@ -1,5 +1,10 @@
 import { basename } from 'path';
 
+interface Loader {
+    test: string;
+    use: string;
+}
+
 /* Return imports-loader format to the config
     For example:
     [
@@ -7,11 +12,11 @@ import { basename } from 'path';
         {path: './foler/my_module.js', args: '?this=>window'},
     ]
 */
-interface importLoaderOptions {
-   path: string;
-   args: string;
+interface ImportLoaderOptions {
+    path: string;
+    args: string;
 }
-function getImportLoaders(optionsArr:Array<importLoaderOptions>) {
+function getImportLoaders(optionsArr: ImportLoaderOptions[]): Loader[] {
     const importsLoaders = [];
     for (var loaderEntry of optionsArr) {
         importsLoaders.push({
@@ -34,11 +39,11 @@ function getImportLoaders(optionsArr:Array<importLoaderOptions>) {
         {path: './folder/my_module.js', name: ['name1', 'name2']}
     ]
 */
-interface exportLoaderOptions {
-   path: string;
-   name?: string | Array<string>;
+interface ExportLoaderOptions {
+    path: string;
+    name?: string | string[];
 }
-function getExposeLoaders(optionsArr:Array<exportLoaderOptions>) {
+function getExposeLoaders(optionsArr: ExportLoaderOptions[]): Loader[] {
     const exposeLoaders = [];
     for (var loaderEntry of optionsArr) {
         const path = loaderEntry.path;

tools/webpack.config.ts

@@ -2,12 +2,12 @@ import { resolve } from 'path';
 import * as BundleTracker from 'webpack-bundle-tracker';
 import * as webpack from 'webpack';
 import { getExposeLoaders, getImportLoaders } from './webpack-helpers';
-const MiniCssExtractPlugin = require("mini-css-extract-plugin");
+import * as MiniCssExtractPlugin from 'mini-css-extract-plugin';
 
 const assets = require('./webpack.assets.json');
 
 // Adds on css-hot-loader in dev mode
-function getHotCSS(bundle:any[], isProd:boolean) {
+function getHotCSS(bundle: any[], isProd: boolean): any[] {
     if (isProd) {
         return bundle;
     }
@@ -16,7 +16,7 @@ function getHotCSS(bundle:any[], isProd:boolean) {
     ].concat(bundle);
 }
 
-export default (env?: string) : webpack.Configuration => {
+export default (env?: string): webpack.Configuration => {
     const production: boolean = env === "production";
     const config: webpack.Configuration = {
         mode: production ? "production" : "development",