The grit-parser makes grammar rules as easy to use as regular expressions.

npm install grit-parser

const grit = require("grit-parser");

const mdy = grit`
    date  = month '/' day '/' year
    day   = \d+
    month = \d+
    year  = \d{4}
`;

var p = mdy.parse("3/4/2019");

console.log(p); // [ '3', '/', '4', '/', '2019' ]

None

The grit-parser.js file is complete and self-contained, it has no external dependencies, and it exports a single function.

Take a copy of the file: grit-parser.js

• Browser: load the grit-parser.js file.
• Node.js: require("./grit-parser.js");

Web-site: https://pcanz.github.io/grammar-parser/