Function getExtendedConfigPath

packages/compiler-cli/src/perform_compile.ts:192–207

(
  configFile: string,
  extendsValue: string,
  host: ConfigurationHost,
  fs: FileSystem,
)

}

function getExtendedConfigPath(
  configFile: string,
  extendsValue: string,
  host: ConfigurationHost,
  fs: FileSystem,
): AbsoluteFsPath | null {
  const result = getExtendedConfigPathWorker(configFile, extendsValue, host, fs);
  if (result !== null) {
    return result;
  }

  // Try to resolve the paths with a json extension append a json extension to the file in case if
  // it is missing and the resolution failed. This is to replicate TypeScript behaviour, see:
  // https://github.com/microsoft/TypeScript/blob/294a5a7d784a5a95a8048ee990400979a6bc3a1c/src/compiler/commandLineParser.ts#L2806
  return getExtendedConfigPathWorker(configFile, `${extendsValue}.json`, host, fs);
}

function getExtendedConfigPathWorker(
  configFile: string,