A TypeScript library for parsing, transposing and formatting ChordPro songs.

Parse any ChordPro song by using the ChordProParser. This gives back a Song object that can then be transposed with the Transposer or formatted with the ChordProFormatter.

Part of ChordProject

To install run:

$ npm i chordproject-parser

Load with import:

import { ChordProParser } from "chordproject-parser";

To use the ChordProParser:

const parser = new ChordProParser();
const song = parser.parse(chordSheet);

chordSheet is a string variable that contains the raw ChordPro song.

You can choose between 3 formatters:

• TextFormatter: output the song as text
• HtmlFormatter: output the song as HTML
• ChordProFormatter: output the song as a "cleaned" ChordPro

const formatter = new HtmlFormatter();
const songText = formatter.format(song);

The formatters have default settings.

You can pass the settings in the formatter's constructor...

const settings = new FormatterSettings();
settings.showChords = false;
const formatter = new HtmlFormatter(settings);

...or directly change the settings after the initialization

const formatter = new HtmlFormatter();
formatter.settings.showChords = false;

Essentially, it looks like this:

    {title: Praise Adonai}
    {artist: Paul Baloche}

    {sot}
    E|-----2---2-----|-------3-3---
    B|---3---3---3---|-----0-------
    G|-2-------------|---0---------
    D|---------------|---0---------
    A|---------------|-2-----------
    E|---------------|-------------
    {eot}

    [Am]Who is like [F]Him,
    The Lion and the [C]Lamb
    Seated on the [G]throne    [E7]
    [Am]Mountains bow [F]down
    Every ocean [C]roars
    To the Lord of [G]hosts

    {start_of_chorus}
    [F]Praise Ado[Am]nai
    From the [G]rising of the sun
    'Till the [Dm7]end of every [F]day[G]
    [F]Praise Ado[Am]nai
    All the [G]nations of the earth
    All the [Dm7] Angels and the [F]Saints
    [G]Sing [Bbsus2]praise
    {end_of_chorus}

To start the demo:

$ npm run start

...then click on the https://localhost:8081/ link to open the demo in your browser

You can add tests in the tests directory and execute them with

$ npm run test

or for the coverage

$ npm run test:ci

This project welcomes contributions of all types. If you find any bug or want some new features, please feel free to create an issue or submit a pull request.

Join the community and chat with us on Discord

GNU License