xref: /expo/packages/create-expo-module/build/createExampleApp.js.map (revision 71f42e3e)

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spawnAsync from '@expo/spawn-async';\nimport fs from 'fs-extra';\nimport path from 'path';\n\nimport { installDependencies } from './packageManager';\nimport { PackageManagerName } from './resolvePackageManager';\nimport { SubstitutionData } from './types';\nimport { newStep } from './utils';\n\n// These dependencies will be removed from the example app (`expo init` adds them)\nconst DEPENDENCIES_TO_REMOVE = ['expo-status-bar', 'expo-splash-screen'];\n\n/**\n * Initializes a new Expo project as an example app.\n */\nexport async function createExampleApp(\n  data: SubstitutionData,\n  targetDir: string,\n  packageManager: PackageManagerName\n): Promise<void> {\n  const exampleProjectSlug = `${data.project.slug}-example`;\n\n  await newStep('Initializing the example app', async (step) => {\n    await spawnAsync(\n      'expo',\n      ['init', exampleProjectSlug, '--template', 'expo-template-blank-typescript'],\n      {\n        cwd: targetDir,\n        stdio: ['ignore', 'ignore', 'inherit'],\n      }\n    );\n    step.succeed('Initialized the example app');\n  });\n\n  // `expo init` creates a new folder with the same name as the project slug\n  const appTmpPath = path.join(targetDir, exampleProjectSlug);\n\n  // Path to the target example dir\n  const appTargetPath = path.join(targetDir, 'example');\n\n  await newStep('Configuring the example app', async (step) => {\n    // \"example\" folder already exists and contains template files,\n    // that should replace these created by `expo init`.\n    await moveFiles(appTargetPath, appTmpPath);\n\n    // Cleanup the \"example\" dir\n    await fs.rmdir(appTargetPath);\n\n    // Move the temporary example app to \"example\" dir\n    await fs.rename(appTmpPath, appTargetPath);\n\n    await addMissingAppConfigFields(appTargetPath, data);\n\n    step.succeed('Configured the example app');\n  });\n\n  await prebuildExampleApp(appTargetPath);\n\n  await modifyPackageJson(appTargetPath);\n\n  await newStep('Installing dependencies in the example app', async (step) => {\n    await installDependencies(packageManager, appTargetPath);\n    await podInstall(appTargetPath);\n    step.succeed('Installed dependencies in the example app');\n  });\n}\n\n/**\n * Copies files from one directory to another.\n */\nasync function moveFiles(fromPath: string, toPath: string): Promise<void> {\n  for (const file of await fs.readdir(fromPath)) {\n    await fs.move(path.join(fromPath, file), path.join(toPath, file), {\n      overwrite: true,\n    });\n  }\n}\n\n/**\n * Adds missing configuration that are required to run `expo prebuild`.\n */\nasync function addMissingAppConfigFields(appPath: string, data: SubstitutionData): Promise<void> {\n  const appConfigPath = path.join(appPath, 'app.json');\n  const appConfig = await fs.readJson(appConfigPath);\n  const appId = `${data.project.package}.example`;\n\n  // Android package name needs to be added to app.json\n  if (!appConfig.expo.android) {\n    appConfig.expo.android = {};\n  }\n  appConfig.expo.android.package = appId;\n\n  // Specify iOS bundle identifier\n  if (!appConfig.expo.ios) {\n    appConfig.expo.ios = {};\n  }\n  appConfig.expo.ios.bundleIdentifier = appId;\n\n  await fs.writeJson(appConfigPath, appConfig, {\n    spaces: 2,\n  });\n}\n\n/**\n * Applies necessary changes to **package.json** of the example app.\n * It means setting the autolinking config and removing unnecessary dependencies.\n */\nasync function modifyPackageJson(appPath: string): Promise<void> {\n  const packageJsonPath = path.join(appPath, 'package.json');\n  const packageJson = await fs.readJson(packageJsonPath);\n\n  if (!packageJson.expo) {\n    packageJson.expo = {};\n  }\n\n  // Set the native modules dir to the root folder,\n  // so that the autolinking can detect and link the module.\n  packageJson.expo.autolinking = {\n    nativeModulesDir: '..',\n  };\n\n  // Remove unnecessary dependencies\n  for (const dependencyToRemove of DEPENDENCIES_TO_REMOVE) {\n    delete packageJson.dependencies[dependencyToRemove];\n  }\n\n  await fs.writeJson(packageJsonPath, packageJson, {\n    spaces: 2,\n  });\n}\n\n/**\n * Runs `expo prebuild` in the example app.\n */\nasync function prebuildExampleApp(exampleAppPath: string): Promise<void> {\n  await newStep('Prebuilding the example app', async (step) => {\n    await spawnAsync('expo', ['prebuild', '--no-install'], {\n      cwd: exampleAppPath,\n      stdio: ['ignore', 'ignore', 'pipe'],\n    });\n    step.succeed('Prebuilt the example app');\n  });\n}\n\n/**\n * Runs `pod install` in the iOS project at the given path.\n */\nasync function podInstall(appPath: string): Promise<void> {\n  await spawnAsync('pod', ['install'], {\n    cwd: path.join(appPath, 'ios'),\n    stdio: ['ignore', 'ignore', 'pipe'],\n  });\n}\n"]}