style: fix linting

src/parser/parse-stream.ts

@@ -7,7 +7,7 @@ type ParseToken = ((token: Token, remainTokens: Token[]) => ITemplate)
 export class ParseStream {
   private tokens: Token[]
   private handlers: {[key: string]: (arg: any) => void} = {}
-  private stopRequested: boolean = false
+  private stopRequested = false
   private parseToken: ParseToken
 
   public constructor (tokens: Token[], parseToken: ParseToken) {

src/parser/token.ts

@@ -1,7 +1,7 @@
 export class Token {
-  public trimLeft: boolean = false
-  public trimRight: boolean = false
-  public type: string = 'notset'
+  public trimLeft = false
+  public trimRight = false
+  public type = 'notset'
   public line: number
   public col: number
   public raw: string