clean up code

Author: gywn

package.json

@@ -34,7 +34,7 @@
     "webpack-cli": "^3.1.0"
   },
   "dependencies": {},
-  "license" : "MIT",
+  "license": "MIT",
   "importSort": {
     ".js, .jsx, .ts, .tsx": {
       "parser": "typescript",

src/TitleBar.tsx

@@ -48,7 +48,10 @@ export class TitleBar extends React.Component {
               <span className="elastic-space" />
               {this.model.state.graph.ids.length > 0
                 ? [
-                    <a className="secondary-link" onClick={this.onClickShowHelp}>
+                    <a
+                      className="secondary-link"
+                      onClick={this.onClickShowHelp}
+                    >
                       {texts.help + " "}
                       <Icon type="question-circle-o" />
                     </a>,

src/serial.ts

@@ -10,15 +10,12 @@ export interface RunOption {
 }
 
 export class Serial {
-  private _queue: Task<any>[];
-  private _running: boolean;
-  private _triggers: Map<string, { func: () => void; active: boolean }>;
-
-  constructor() {
-    this._queue = [];
-    this._running = false;
-    this._triggers = new Map();
-  }
+  private _queue: Task<any>[] = [];
+  private _running: boolean = false;
+  private _triggers: Map<
+    string,
+    { func: () => void; active: boolean }
+  > = new Map();
 
   subscribe(name: string, func: () => void) {
     this._triggers.set(name, { func, active: false });

src/view-model.ts

@@ -5,11 +5,7 @@ import { Snapshot } from "./link-stack.h";
 import { Message, MsgType, createIntention, isMessage } from "./message";
 
 class Delayer {
-  private _handle: number | null;
-
-  constructor() {
-    this._handle = null;
-  }
+  private _handle: number | null = null;
 
   later(func: (...args: any[]) => void, timeout: number) {
     if (this._handle !== null) clearTimeout(this._handle);
@@ -31,26 +27,23 @@ export interface ViewModelState extends Snapshot {
 }
 
 export class ViewModel {
-  state: ViewModelState;
-
-  private _port: browser.runtime.Port;
-  private _listeners: ((state: ViewModelState) => void)[];
-  private _updateDelayer: Delayer;
+  state: ViewModelState = {
+    name: null,
+    id: null,
+    graph: emptyGraph(),
+    monotron: 0,
+    unsyncedUpdate: true,
+    bookmarkTreeSelection: null,
+    modal: ModalState.None
+  };
+
+  private _port: browser.runtime.Port = browser.runtime.connect({
+    name: "view"
+  });
+  private _listeners: ((state: ViewModelState) => void)[] = [];
+  private _updateDelayer: Delayer = new Delayer();
 
   constructor() {
-    this.state = {
-      name: null,
-      id: null,
-      graph: emptyGraph(),
-      monotron: 0,
-      unsyncedUpdate: true,
-      bookmarkTreeSelection: null,
-      modal: ModalState.None
-    };
-    this._port = browser.runtime.connect({ name: "view" });
-    this._listeners = [];
-    this._updateDelayer = new Delayer();
-
     this._port.onMessage.addListener(o => this.dispatch(o as any));
 
     this.dispatch(createIntention("_init"));