depcheck

depcheck.js

//@ts-check
const fs = require("fs")
const utl = require("util")
const path = require("path")

process.on("unhandledRejection", (...arg) => {
  console.error("unhandledRejection", ...arg)
  process.exit(1)
})

const checkFor = process.argv[2] || "@types/react-dom"
let found = {}
let devfound = {}

console.log("check for", checkFor)

function main(ctx = process.cwd()) {
  try {
    var str = String(fs.readFileSync(ctx + "/package.json"))
    let package = JSON.parse(str)
    if (package.dependencies && package.dependencies[checkFor]) {
      found[ctx] = package.dependencies[checkFor]
    }
    if (package.devDependencies && package.devDependencies[checkFor]) {
      devfound[ctx] = package.devDependencies[checkFor]
    }
  } catch (err) {}

  try {
    var dirs = fs.readdirSync(ctx)
  } catch (err) {}
  for (let x = 0; x < dirs.length; x++) {
    let dir = path.resolve(ctx, dirs[x])
    if (fs.statSync(dir).isDirectory()) main(dir)
  }
}

main()
console.log("found", found)
console.log("dev", found)