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chalk from 'chalk';\nimport childProcess from 'child_process';\nimport commander from 'commander';\nimport leven from 'leven';\nimport path from 'path';\n\nimport {Command, Config} from '@react-native-community/cli-types';\nimport {logger, CLIError} from '@react-native-community/cli-tools';\n\nimport {detachedCommands, projectCommands} from './commands';\nimport init from './commands/init/initCompat';\nimport loadConfig from './tools/config';\n\nconst pkgJson = require('../package.json');\n\ncommander\n .usage('<command> [options]')\n .option('--version', 'Print CLI version')\n .option('--verbose', 'Increase logging verbosity');\n\ncommander.arguments('<command>').action((cmd) => {\n printUnknownCommand(cmd);\n process.exit(1);\n});\n\nconst handleError = (err: Error) => {\n logger.enable();\n if (commander.verbose) {\n logger.error(err.message);\n } else {\n // Some error messages (esp. custom ones) might have `.` at the end already.\n const message = err.message.replace(/\\.$/, '');\n logger.error(`${message}.`);\n }\n if (err.stack) {\n logger.log(err.stack);\n }\n if (!commander.verbose) {\n logger.info(\n chalk.dim(\n `Run CLI with ${chalk.reset('--verbose')} ${chalk.dim(\n 'flag for more details.',\n )}`,\n ),\n );\n }\n process.exit(1);\n};\n\n/**\n * Custom printHelpInformation command inspired by internal Commander.js\n * one modified to suit our needs\n */\nfunction printHelpInformation(\n this: commander.Command,\n examples: Command['examples'],\n pkg: Command['pkg'],\n) {\n let cmdName = this._name;\n const argsList = (this._args as Array<{required: boolean; name: string}>)\n .map((arg) => (arg.required ? `<${arg.name}>` : `[${arg.name}]`))\n .join(' ');\n\n if (this._alias) {\n cmdName = `${cmdName}|${this._alias}`;\n }\n\n const sourceInformation = pkg\n ? [`${chalk.bold('Source:')} ${pkg.name}@${pkg.version}`, '']\n : [];\n\n let output = [\n chalk.bold(`react-native ${cmdName} ${argsList}`),\n this._description ? `\\n${this._description}\\n` : '',\n ...sourceInformation,\n `${chalk.bold('Options:')}`,\n this.optionHelp().replace(/^/gm, ' '),\n ];\n\n if (examples && examples.length > 0) {\n const formattedUsage = examples\n .map((example) => ` ${example.desc}: \\n ${chalk.cyan(example.cmd)}`)\n .join('\\n\\n');\n\n output = output.concat([chalk.bold('\\nExample usage:'), formattedUsage]);\n }\n\n return output.join('\\n').concat('\\n');\n}\n\nfunction printUnknownCommand(cmdName: string) {\n const availableCommands = commander.commands.map((cmd: any) => cmd._name);\n const suggestion = availableCommands.find((cmd: string) => {\n return leven(cmd, cmdName) < cmd.length * 0.4;\n });\n let errorMsg = `Unrecognized command \"${chalk.bold(cmdName)}\".`;\n if (suggestion) {\n errorMsg += ` Did you mean \"${suggestion}\"?`;\n }\n if (cmdName) {\n logger.error(errorMsg);\n logger.info(\n `Run ${chalk.bold(\n '\"react-native --help\"',\n )} to see a list of all available commands.`,\n );\n } else {\n commander.outputHelp();\n }\n}\n\n/**\n * Custom type assertion needed for the `makeCommand` conditional\n * types to be properly resolved.\n */\nconst isDetachedCommand = (\n command: Command<boolean>,\n): command is Command<true> => {\n return command.detached === true;\n};\n\n/**\n * Attaches a new command onto global `commander` instance.\n *\n * Note that this function takes additional argument of `Config` type in case\n * passed `command` needs it for its execution.\n */\nfunction attachCommand<IsDetached extends boolean>(\n command: Command<IsDetached>,\n ...rest: IsDetached extends false ? [Config] : []\n): void {\n const cmd = commander\n .command(command.name)\n .action(async function handleAction(\n this: commander.Command,\n ...args: string[]\n ) {\n const passedOptions = this.opts();\n const argv = Array.from(args).slice(0, -1);\n\n try {\n if (isDetachedCommand(command)) {\n await command.func(argv, passedOptions);\n } else {\n await command.func(argv, rest[0] as Config, passedOptions);\n }\n } catch (error) {\n handleError(error);\n }\n });\n\n if (command.description) {\n cmd.description(command.description);\n }\n\n cmd.helpInformation = printHelpInformation.bind(\n cmd,\n command.examples,\n command.pkg,\n );\n\n for (const opt of command.options || []) {\n cmd.option(\n opt.name,\n opt.description,\n opt.parse || ((val: any) => val),\n typeof opt.default === 'function'\n ? opt.default(rest[0] as Config)\n : opt.default,\n );\n }\n}\n\nasync function run() {\n try {\n await setupAndRun();\n } catch (e) {\n handleError(e);\n }\n}\n\nasync function setupAndRun() {\n // Commander is not available yet\n\n // when we run `config`, we don't want to output anything to the console. We\n // expect it to return valid JSON\n if (process.argv.includes('config')) {\n logger.disable();\n }\n\n logger.setVerbose(process.argv.includes('--verbose'));\n\n // We only have a setup script for UNIX envs currently\n if (process.platform !== 'win32') {\n const scriptName = 'setup_env.sh';\n const absolutePath = path.join(__dirname, '..', scriptName);\n\n try {\n childProcess.execFileSync(absolutePath, {stdio: 'pipe'});\n } catch (error) {\n logger.warn(\n `Failed to run environment setup script \"${scriptName}\"\\n\\n${chalk.red(\n error,\n )}`,\n );\n logger.info(\n `React Native CLI will continue to run if your local environment matches what React Native expects. If it does fail, check out \"${absolutePath}\" and adjust your environment to match it.`,\n );\n }\n }\n\n for (const command of detachedCommands) {\n attachCommand(command);\n }\n\n try {\n const config = loadConfig();\n\n logger.enable();\n\n for (const command of [...projectCommands, ...config.commands]) {\n attachCommand(command, config);\n }\n } catch (error) {\n /**\n * When there is no `package.json` found, the CLI will enter `detached` mode and a subset\n * of commands will be available. That's why we don't throw on such kind of error.\n */\n if (error.message.includes(\"We couldn't find a package.json\")) {\n logger.debug(error.message);\n logger.debug(\n 'Failed to load configuration of your project. Only a subset of commands will be available.',\n );\n } else {\n throw new CLIError(\n 'Failed to load configuration of your project.',\n error,\n );\n }\n }\n\n commander.parse(process.argv);\n\n if (commander.rawArgs.length === 2) {\n commander.outputHelp();\n }\n\n // We handle --version as a special case like this because both `commander`\n // and `yargs` append it to every command and we don't want to do that.\n // E.g. outside command `init` has --version flag and we want to preserve it.\n if (commander.args.length === 0 && commander.rawArgs.includes('--version')) {\n console.log(pkgJson.version);\n }\n}\n\nconst bin = require.resolve('./bin');\n\nexport {run, init, bin, loadConfig};\n"]} |