@eslint-community/regexpp 4.10.0

The @eslint-community/regexpp is a highly efficient tool designed for parsing regular expressions in ECMAScript. This module enables developers to carry out tasks like parsing, validating, and visiting each node of a regular expression's Abstract Syntax Tree (AST).

The usage of @eslint-community/regexpp involves a series of straightforward steps. First and foremost, you need to install the npm package using the command:

$ npm install @eslint-community/regexpp

Afterwards, import the necessary components such as AST, RegExpParser, RegExpValidator, RegExpVisitor, parseRegExpLiteral, validateRegExpLiteral, and visitRegExpAST.

import {
    AST,
    RegExpParser,
    RegExpValidator,
    RegExpVisitor,
    parseRegExpLiteral,
    validateRegExpLiteral,
    visitRegExpAST
} from "@eslint-community/regexpp";

Now you can use these components to parse, validate and visit regex nodes. Here's how you would parse a literal:

const literal = "/abc/g";
const parsedLiteral = parseRegExpLiteral(literal);

To validate a literal, you'd do something like this:

const isValid = validateRegExpLiteral(literal);

And to visit each node in a regex's AST, you'd do:

visitRegExpAST(parsedLiteral, {
    onQuantifierEnter(node) {
        console.log(`Visiting a quantifier: ${node.raw}`);
    }
});

For thorough understanding and better utilization of this package's capabilities, it is recommended that you refer to detailed documentation. Detailed documentation about @eslint-community/regexpp can be found directly on the official repository at https://github.com/eslint-community/regexpp. Instructions for installation, usage, and comprehensive API references are all provided in the repository's README file.