feat(parser): rewrite lexer to make it faster (#50)

* feat(parser): first iteration of new lexer

* feat(parser): convert token string props to number props

* refactor(parser): optimize char grabber

* refactor(parser): working on new lexer

* refactor(parser): convert token string props to number props

* refactor(parser): rebuild lexer, add tag attrs parsing

* refactor(parser): rework word parsing and tag parsing

* refactor(parser): rework to pass tests

* refactor(parser): rework tag parsing

* refactor(parser): rework escape tags parsing

* refactor(parser): rework tests

* refactor(parser): all test pass

* refactor(parser): make lexer faster by move mode switching in loop

* refactor(parser): remove all state map objects

* refactor(parser): order of parsing states

* refactor(parser): state switching without return

* refactor(parser): rename buffers to chars

* refactor(lexer): reduce function calls

* feat(lexer): add new parser tests and code to pass it

* fix(utils): remove unused variable in char grabber

* feat(lexer): add test for new lexer bug

* chore(*): add lexer and lexer2 to benchmark

* chore(lexer): add some debug info for char grabber

* feat(parser): add new test for single attributes without values

* fix(lexer): paired tags tests

* refactor(lexer): comment breaking changes tests for future releases

* feat(core): improve tests

* refactor(parser): add more tests, reduce char grabber size

* refactor(parser): reduce utils size

* refactor(parser): remove unused code from tag parsing code

* refactor(parser): remove unused code from word to tag transforming code

* chore(benchmark): fix benchmark imports

packages/bbob-plugin-helper/src/TagNode.js

@@ -24,7 +24,7 @@ class TagNode {
   constructor(tag, attrs, content) {
     this.tag = tag;
     this.attrs = attrs;
-    this.content = [].concat(content);
+    this.content = Array.isArray(content) ? content : [content];
   }
 
   attr(name, value) {