This library only use pure javascript(or ts) and not dependent on any other environment.

Usage

1. First get steam install path.

It provide a command for windows cmd. Use it like this:

import { x } from 'tinyexec'
import {
  GET_STEAM_INSTALL_PATH_COMMAND,
  getSteamPathFromCmdOutput
} from 'unsteam-path'

const [cmd, ...args] = GET_STEAM_INSTALL_PATH_COMMAND.split(' ')
const { stdout: output } = await x(cmd, args)

const steamPath = getSteamPathFromCmdOutput(output)

tinyexec is a tiny executer library for nodejs, which can be replaced by any other executer.

2. Get game path by id

// import { readFileSync } from 'node:fs'
import { readFile } from 'node:fs/promises'
import { getGamePath } from 'unsteam-path'

getGamePath(
  550,
  /* you have got it in the above example */
  steamPath,
  path => readFile(path, 'utf-8')
)// SteamLibrary/steamapps/common/Left 4 Dead 2

readfile can be replaced by any other filesystem reader, which receive a path and return a text content.

You can also use a async fs reader here, and getGamePath will be a async function too.