Merge pull request #25948 from BryceCicada/master.pegjs

[pegjs] Added support for parser options

types/pegjs/index.d.ts

@@ -51,8 +51,9 @@ export type GrammarError = PegjsError;
 export var GrammarError: any;
 
 export interface ParserOptions {
-    startRule: string;
-    tracer: any;
+    startRule?: string;
+    tracer?: any;
+    [key: string]: any;
 }
 
 export interface Parser {

types/pegjs/pegjs-tests.ts

@@ -26,6 +26,11 @@ import * as pegjs from 'pegjs';
     })
 }
 
+{
+    let parser: pegjs.Parser = pegjs.generate('start = "a" { return options; }');
+    let parsed: any = parser.parse("a", {a: 42});
+}
+
 try {
     let source: string = pegjs.generate("A = 'test'", {output: "source"});
 } catch (error) {
@@ -44,4 +49,4 @@ try {
     console.log(e.location.end.line);
     console.log(e.message);
     console.log(e.name);
-}
+}