Function loadConfigAsync

packages/cli-config/src/loadConfig.ts:188–284

({
  projectRoot = findProjectRoot(),
  selectedPlatform,
}: {
  projectRoot?: string;
  selectedPlatform?: string;
})

 */

export async function loadConfigAsync({
  projectRoot = findProjectRoot(),
  selectedPlatform,
}: {
  projectRoot?: string;
  selectedPlatform?: string;
}): Promise<Config> {
  let lazyProject: ProjectConfig;
  const userConfig = await readConfigFromDiskAsync(projectRoot);

  const initialConfig: Config = {
    root: projectRoot,
    get reactNativePath() {
      return userConfig.reactNativePath
        ? path.resolve(projectRoot, userConfig.reactNativePath)
        : resolveReactNativePath(projectRoot);
    },
    get reactNativeVersion() {
      return getReactNativeVersion(initialConfig.reactNativePath);
    },
    dependencies: userConfig.dependencies,
    commands: userConfig.commands,
    healthChecks: userConfig.healthChecks || [],
    platforms: userConfig.platforms,
    assets: userConfig.assets,
    get project() {
      if (lazyProject) {
        return lazyProject;
      }

      lazyProject = {};
      for (const platform in finalConfig.platforms) {
        const platformConfig = finalConfig.platforms[platform];
        if (platformConfig) {
          lazyProject[platform] = platformConfig.projectConfig(
            projectRoot,
            userConfig.project[platform] || {},
          );
        }
      }

      return lazyProject;
    },
  };

  const finalConfig = await Array.from(
    new Set([
      ...Object.keys(userConfig.dependencies),
      ...findDependencies(projectRoot),
    ]),
  ).reduce(async (accPromise: Promise<Config>, dependencyName) => {
    const acc = await accPromise;
    const localDependencyRoot =
      userConfig.dependencies[dependencyName] &&
      userConfig.dependencies[dependencyName].root;
    try {
      let root =
        localDependencyRoot ||