build - fix for private-class-elements

Author: kumavis

build.js

@@ -30,6 +30,7 @@ compile('acorn-class-fields', './lib/class-fields/index.js', privateClassElement
 compile('acorn-static-class-features', './lib/static-class-features/index.js', privateClassElements)
 compile('acorn-private-class-elements', './lib/private-class-elements/index.js', function (str) {
   return str.replace('class extends Parser', 'class Parser_ extends Parser')
+    .replace('new Parser', 'new Parser_')
     // it also works with v7
     .replace('if (acorn.version.indexOf("6.") != 0 || acorn.version.indexOf("6.0.") == 0) {', 'if (false) {')
 })

lib/private-class-elements/index.js

@@ -35,7 +35,7 @@ module.exports = function(Parser) {
     Parser_.prototype.constructor = Parser_;
 
     Parser_.prototype._branch = function _branch () {
-      this.__branch = this.__branch || new Parser({ecmaVersion: this.options.ecmaVersion}, this.input)
+      this.__branch = this.__branch || new Parser_({ecmaVersion: this.options.ecmaVersion}, this.input)
       this.__branch.end = this.end
       this.__branch.pos = this.pos
       this.__branch.type = this.type