vinicius73 / rollup-plugin-pika-resolver

import path from 'path'

import findUp from 'find-up'

import { PluginContext } from 'rollup'

const detectVersion = async (id: string): Promise<string | null> => {

  const cwd = path.dirname(require.resolve(id))

  const pkgFile = await findUp('package.json', { cwd }) as string

  return require(pkgFile).version

}

const getVersion = async function (context: PluginContext, cache: Map<string, string | null>, moduleId: string): Promise<string | null> {

  if (cache.has(moduleId)) {

    return cache.get(moduleId) as string

  }

  const version = await detectVersion(moduleId)

  if (!version) {

    context.warn(`Missing version of ${moduleId}`)

  }

  const versionId = version

    ? `${moduleId}@${version}`

    : version

  cache.set(moduleId, versionId)

  return versionId

}

export { detectVersion, getVersion }