Function getPathsFromTypeScriptConfig

packages/babel-config/src/common.ts:142–182

(
  config: CompilerOptionsForPaths,
  rootDir: string,
)

 * @returns {Record<string, string>} The paths object
 */
export const getPathsFromTypeScriptConfig = (
  config: CompilerOptionsForPaths,
  rootDir: string,
): Record<string, string> => {
  if (!config) {
    return {}
  }

  if (!config.compilerOptions?.paths) {
    return {}
  }

  const { baseUrl, paths } = config.compilerOptions

  let absoluteBase: string
  if (baseUrl) {
    // Convert it to absolute path - on windows the baseUrl is already absolute
    absoluteBase = path.isAbsolute(baseUrl)
      ? baseUrl
      : path.join(rootDir, baseUrl)
  } else {
    absoluteBase = rootDir
  }

  const pathsObj: Record<string, string> = {}
  for (const [key, value] of Object.entries(paths)) {
    // exclude the default paths that are included in the tsconfig.json file
    // "src/*"
    // "$api/*"
    // "types/*"
    // "@redwoodjs/testing"
    if (key.match(/src\/|\$api\/\*|types\/\*|\@redwoodjs\/.*/g)) {
      continue
    }
    const aliasKey = key.replace('/*', '')
    const aliasValue = path.join(absoluteBase, value[0].replace('/*', ''))

    pathsObj[aliasKey] = aliasValue
  }
  return pathsObj
}