perf: remove instanceof DelimitedToken

src/parser/token-kind.ts

@@ -1,14 +1,15 @@
 export enum TokenKind {
-  Number,
-  Literal,
-  Tag,
-  Output,
-  HTML,
-  Filter,
-  Hash,
-  PropertyAccess,
-  Word,
-  Range,
-  Quoted,
-  Operator
+  Number = 1,
+  Literal = 2,
+  Tag = 4,
+  Output = 8,
+  HTML = 16,
+  Filter = 32,
+  Hash = 64,
+  PropertyAccess = 128,
+  Word = 256,
+  Range = 512,
+  Quoted = 1024,
+  Operator = 2048,
+  Delimited = Tag | Output
 }

src/parser/whitespace-ctrl.ts

@@ -1,6 +1,5 @@
 import { Token } from '../tokens/token'
-import { DelimitedToken } from '../tokens/delimited-token'
-import { isTagToken, isHTMLToken } from '../util/type-guards'
+import { isTagToken, isHTMLToken, isDelimitedToken } from '../util/type-guards'
 import { NormalizedFullOptions } from '../liquid-options'
 import { TYPES, INLINE_BLANK, BLANK } from '../util/character'
 
@@ -10,7 +9,7 @@ export function whiteSpaceCtrl (tokens: Token[], options: NormalizedFullOptions)
 
   for (let i = 0; i < tokens.length; i++) {
     const token = tokens[i]
-    if (!(token instanceof DelimitedToken)) continue
+    if (!isDelimitedToken(token)) continue
     if (!inRaw && token.trimLeft) {
       trimLeft(tokens[i - 1], options.greedy)
     }

src/util/type-guards.ts

@@ -1,4 +1,5 @@
 import { OperatorToken } from '../tokens/operator-token'
+import { DelimitedToken } from '../tokens/delimited-token'
 import { WordToken } from '../tokens/word-token'
 import { TagToken } from '../tokens/tag-token'
 import { HTMLToken } from '../tokens/html-token'
@@ -10,6 +11,10 @@ import { NumberToken } from '../tokens/number-token'
 import { RangeToken } from '../tokens/range-token'
 import { TokenKind } from '../parser/token-kind'
 
+export function isDelimitedToken (val: any): val is DelimitedToken {
+  return !!(getKind(val) & TokenKind.Delimited)
+}
+
 export function isOperatorToken (val: any): val is OperatorToken {
   return getKind(val) === TokenKind.Operator
 }