raylib/tools/postinstall.js

Node.js bindings for raylib.

// this is run after npm install
// download pre-made module, if possible & exit 1, or exit 0 to tell system if it needs to build

const { promises: fs } = require('fs')
const path = require('path')
const fetch = require('cross-fetch')

let targetPath = path.join(__dirname, '..', 'build', 'Release', 'node-raylib.node')

function toBuffer (ab) {
  const buf = Buffer.alloc(ab.byteLength)
  const view = new Uint8Array(ab)
  for (let i = 0; i < buf.length; ++i) {
    buf[i] = view[i]
  }
  return buf
}

async function exists (path) {
  try {
    await fs.access(path)
    return true
  } catch {
    return false
  }
}

async function main () {
  if (await exists(targetPath)) {
    console.log('Found node-raylib.node.')
    process.exit(0)
  }

  let url = `https://github.com/RobLoach/node-raylib/releases/download/v${process.env.npm_package_version}/node-raylib-${process.platform}-${process.arch}.node`

  console.log(`Checking for ${url}`)

  try {
    await fs.mkdir(path.join(__dirname, '..', 'build'))
  } catch (e) {}

  try {
    await fs.mkdir(path.join(__dirname, '..', 'build', 'Release'))
  } catch (e) {}

  if (process.platform === 'linux' && (process.arch === 'arm' || process.arch === 'arm64')) {
    targetPath = path.join(__dirname, '..', 'build', 'Release', 'node-raylib-drm.node')
    url = `https://github.com/RobLoach/node-raylib/releases/download/v${process.env.npm_package_version}/node-raylib-${process.platform}-${process.arch}-drm.node`
    try {
      const data = await fetch(url).then(r => {
        if (r.status !== 200) {
          throw new Error(`Status: ${r.status}`)
        }
        return r
      }).then(r => r.arrayBuffer())
      await fs.writeFile(targetPath, toBuffer(data))
      console.log('Found DRM on releases.')
    } catch (e) {
    }
  }

  try {
    const data = await fetch(url).then(r => {
      if (r.status !== 200) {
        throw new Error(`Status: ${r.status}`)
      }
      return r
    }).then(r => r.arrayBuffer())
    await fs.writeFile(targetPath, toBuffer(data))
    console.log('Found on releases.')
    process.exit(0)
  } catch (e) {
    console.error(e.message)
  }

  // couldn't find it, so tell postinstall to compile it
  console.log('Not found. Building.')
  process.exit(1)
}
main()