Awesome

RC9

Read/Write RC configs couldn't be easier!

Install

Install dependencies:

# ✨ Auto-detect
npx nypm install rc9

# npm
npm install rc9

# yarn
yarn add rc9

# pnpm
pnpm install rc9

# bun
bun install rc9

Import utils:

ESM (Node.js, Bun)

import {
  defaults,
  parse,
  parseFile,
  read,
  readUser,
  serialize,
  write,
  writeUser,
  update,
  updateUser,
} from "rc9";

CommonJS (Legacy Node.js)

const {
  defaults,
  parse,
  parseFile,
  read,
  readUser,
  serialize,
  write,
  writeUser,
  update,
  updateUser,
} = require("rc9");

Usage

.conf:

db.username=username
db.password=multi word password
db.enabled=true

Update config:

update({ 'db.enabled': false }) // or update(..., { name: '.conf' })

Push to an array:

update({ 'modules[]': 'test' })

Read/Write config:

const config = read() // or read('.conf')

// config = {
//   db: {
//     username: 'username',
//     password: 'multi word password',
//     enabled: true
//   }
// }

config.enabled = false
write(config) // or write(config, '.conf')

User Config:

It is common to keep config in user home directory (MacOS: /Users/{name}, Linux: /home/{name}, Windows: C:\users\{name})

you can use readUser/writeuser/updateUser shortcuts to quickly do this:

writeUser({ token: 123 }, '.zoorc') // Will be saved in {home}/.zoorc

const conf = readUser('.zoorc') // { token: 123 }

Unflatten

RC uses flat to automatically flat/unflat when writing and reading rcfile.

It means that you can use . for keys to define objects. Some examples:

• hello.world = true <=> { hello: { world: true }
• test.0 = A <=> tags: [ 'A' ]

Note: If you use keys that can override like x= and x.y=, you can disable this feature by passing flat: true option.

Tip: You can use keys ending with [] to push to an array like test[]=A

Native Values

RC uses destr to convert values into native javascript values.

So reading count=123 results { count: 123 } (instead of { count: "123" }) if you want to preserve strings as is, can use count="123".

Exports

const defaults: RCOptions;
function parse(contents: string, options?: RCOptions): RC
function parseFile(path: string, options?: RCOptions): RC
function read(options?: RCOptions | string): RC;
function readUser(options?: RCOptions | string): RC;
function serialize(config: RC): string;
function write(config: RC, options?: RCOptions | string): void;
function writeUser(config: RC, options?: RCOptions | string): void;
function update(config: RC, options?: RCOptions | string): RC;
function updateUser(config: RC, options?: RCOptions | string): RC;

Types:

type RC = Record<string, any>;
interface RCOptions {
    name?: string;
    dir?: string;
    flat?: boolean;
}

Defaults:

{
  name: '.conf',
  dir: process.cwd(),
  flat: false
}

Why RC9?

Be the first one to guess 🐇 <!-- Hint: do research about rc files history -->

License

Published under the MIT license. Made by community 💛 <br><br> <a href="https://github.com/unjs/rc9/graphs/contributors"> <img src="https://contrib.rocks/image?repo=unjs/rc9" /> </a>