bot-hub/scripts/check-peer-deps.ts

import { readFile } from 'node:fs/promises'
import { join } from 'node:path'
import semver from 'semver'

type PackageJson = {
  name?: string
  version?: string
  dependencies?: Record<string, string>
  peerDependencies?: Record<string, string>
}

async function readJson(path: string): Promise<PackageJson> {
  const raw = await readFile(path, 'utf8')
  return JSON.parse(raw) as PackageJson
}

async function main() {
  const root = process.cwd()
  const rootPkgPath = join(root, 'package.json')
  const authPkgPath = join(root, 'node_modules', '@convex-dev', 'auth', 'package.json')
  const corePkgPath = join(root, 'node_modules', '@auth', 'core', 'package.json')

  const rootPkg = await readJson(rootPkgPath)
  const authPkg = await readJson(authPkgPath)
  const corePkg = await readJson(corePkgPath)

  const peerRange = authPkg.peerDependencies?.['@auth/core']
  const declaredRange = rootPkg.dependencies?.['@auth/core']
  const installedVersion = corePkg.version

  if (!peerRange) {
    throw new Error('Missing @auth/core peer range in @convex-dev/auth package.json')
  }
  if (!declaredRange) {
    throw new Error('Missing @auth/core dependency in root package.json')
  }
  if (!installedVersion) {
    throw new Error('Missing @auth/core version in node_modules')
  }

  if (!semver.intersects(declaredRange, peerRange, { includePrerelease: true })) {
    throw new Error(
      `@auth/core range mismatch: package.json declares "${declaredRange}" but @convex-dev/auth requires "${peerRange}"`,
    )
  }

  if (!semver.satisfies(installedVersion, peerRange, { includePrerelease: true })) {
    throw new Error(
      `@auth/core version mismatch: installed "${installedVersion}" does not satisfy @convex-dev/auth peer "${peerRange}"`,
    )
  }

  console.log(`peer ok: @auth/core ${installedVersion} satisfies @convex-dev/auth (${peerRange})`)
}

await main()