cjihrig/jsparser

---

cjihrig/jsparser.json

{
  "createdAt": "2013-01-02T18:00:58Z",
  "defaultBranch": "master",
  "description": "An ECMAScript 5.1 parser, written in JavaScript.  The ECMAScript grammar was created using Jison.",
  "fullName": "cjihrig/jsparser",
  "homepage": null,
  "language": "JavaScript",
  "name": "jsparser",
  "pushedAt": "2016-11-27T20:54:04Z",
  "stargazersCount": 96,
  "topics": [],
  "updatedAt": "2025-06-26T17:47:05Z",
  "url": "https://github.com/cjihrig/jsparser"
}

jsparser

An ECMAScript 5.1 parser, written in JavaScript. The ECMAScript grammar was created using Jison.

A blog post describing the project is available here. You can also test the parser online here.

Node Usage

Require the jsparser module, then simply call the parser’s parse() method on a string of JavaScript source code. On success, an AST is returned. On failure, an error is thown.

var parser = require("jsparser");
var source = "console.log('Hello World!');";
var ast;

try {
  ast = parser.parse(source);
  console.log(ast);
} catch (exception) {
  console.log("Parse Error:  " + exception.message);
}