[REF] utils: remove id generator

src/component.ts

@@ -1,10 +1,8 @@
 import { EventBus } from "./event_bus";
 import { Observer } from "./observer";
 import { QWeb } from "./qweb";
-import { idGenerator } from "./utils";
 import { h, patch, VNode } from "./vdom";
 
-let getId = idGenerator();
 
 //------------------------------------------------------------------------------
 // Types/helpers
@@ -33,13 +31,10 @@ export interface Meta<T extends Env, Props> {
   observer?: Observer;
 }
 
-export interface Type<T> extends Function {
-  new (...args: any[]): T;
-}
-
 //------------------------------------------------------------------------------
 // Widget
 //------------------------------------------------------------------------------
+let nextId = 1;
 
 export class Component<
   T extends Env,
@@ -92,7 +87,7 @@ export class Component<
     //   Con: this is not really safe
     //   Pro: but creating widget (by a template) is always unsafe anyway
     this.props = <Props>props || <Props>{};
-    let id: number = getId();
+    let id: number = nextId++;
     let p: Component<T, any, any> | null = null;
     if (parent instanceof Component) {
       p = parent;

src/utils.ts

@@ -27,14 +27,6 @@ export function htmlTrim(s: string): string {
   return result;
 }
 
-/**
- * Create a function that will generate unique id numbers
- */
-export function idGenerator(): () => number {
-  let nextID = 1;
-  return () => nextID++;
-}
-
 export type HashFn = (args: any[]) => string;
 
 export function memoize<R, T extends (...args: any[]) => R>(

tests/utils.test.ts

@@ -1,7 +1,6 @@
 import {
   escape,
   htmlTrim,
-  idGenerator,
   memoize,
   debounce,
   findInTree,
@@ -35,15 +34,6 @@ describe("htmlTrim", () => {
   });
 });
 
-describe("idGenerator", () => {
-  test("basic use", () => {
-    let gen = idGenerator();
-    expect(gen()).toBe(1);
-    expect(gen()).toBe(2);
-    expect(gen()).toBe(3);
-  });
-});
-
 describe("memoize", () => {
   test("return correct value", () => {
     const f = memoize((a, b) => a + b);