style: introduce @typescript-eslint/recommended

src/template/html.ts

@@ -3,12 +3,12 @@ import ITemplate from '../template/itemplate'
 import HTMLToken from '../parser/html-token'
 
 export default class extends Template<HTMLToken> implements ITemplate {
-  str: string
-  constructor (token: HTMLToken) {
+  private str: string
+  public constructor (token: HTMLToken) {
     super(token)
     this.str = token.value
   }
-  async render (): Promise<string> {
+  public async render (): Promise<string> {
     return this.str
   }
 }