next/dist/cli/next-dev.js

The React Framework

#!/usr/bin/env node
"use strict";exports.__esModule=true;exports.nextDev=void 0;var _path=require("path");var _index=_interopRequireDefault(require("next/dist/compiled/arg/index.js"));var _fs=require("fs");var _startServer=_interopRequireDefault(require("../server/lib/start-server"));var _utils=require("../server/lib/utils");var Log=_interopRequireWildcard(require("../build/output/log"));var _output=require("../build/output");function _interopRequireDefault(obj){return obj&&obj.__esModule?obj:{default:obj};}function _getRequireWildcardCache(){if(typeof WeakMap!=="function")return null;var cache=new WeakMap();_getRequireWildcardCache=function(){return cache;};return cache;}function _interopRequireWildcard(obj){if(obj&&obj.__esModule){return obj;}if(obj===null||typeof obj!=="object"&&typeof obj!=="function"){return{default:obj};}var cache=_getRequireWildcardCache();if(cache&&cache.has(obj)){return cache.get(obj);}var newObj={};var hasPropertyDescriptor=Object.defineProperty&&Object.getOwnPropertyDescriptor;for(var key in obj){if(Object.prototype.hasOwnProperty.call(obj,key)){var desc=hasPropertyDescriptor?Object.getOwnPropertyDescriptor(obj,key):null;if(desc&&(desc.get||desc.set)){Object.defineProperty(newObj,key,desc);}else{newObj[key]=obj[key];}}}newObj.default=obj;if(cache){cache.set(obj,newObj);}return newObj;}const nextDev=argv=>{const validArgs={// Types
'--help':Boolean,'--port':Number,'--hostname':String,// Aliases
'-h':'--help','-p':'--port','-H':'--hostname'};let args;try{args=(0,_index.default)(validArgs,{argv});}catch(error){if(error.code==='ARG_UNKNOWN_OPTION'){return(0,_utils.printAndExit)(error.message,1);}throw error;}if(args['--help']){console.log(`
      Description
        Starts the application in development mode (hot-code reloading, error
        reporting, etc)

      Usage
        $ next dev <dir> -p <port number>

      <dir> represents the directory of the Next.js application.
      If no directory is provided, the current directory will be used.

      Options
        --port, -p      A port number on which to start the application
        --hostname, -H  Hostname on which to start the application (default: 0.0.0.0)
        --help, -h      Displays this message
    `);process.exit(0);}const dir=(0,_path.resolve)(args._[0]||'.');// Check if pages dir exists and warn if not
if(!(0,_fs.existsSync)(dir)){(0,_utils.printAndExit)(`> No such directory exists as the project root: ${dir}`);}async function preflight(){const{getPackageVersion}=await Promise.resolve().then(()=>_interopRequireWildcard(require('../lib/get-package-version')));const[sassVersion,nodeSassVersion]=await Promise.all([getPackageVersion({cwd:dir,name:'sass'}),getPackageVersion({cwd:dir,name:'node-sass'})]);if(sassVersion&&nodeSassVersion){Log.warn('Your project has both `sass` and `node-sass` installed as dependencies, but should only use one or the other. '+'Please remove the `node-sass` dependency from your project. '+' Read more: https://nextjs.org/docs/messages/duplicate-sass');}}const port=args['--port']||process.env.PORT&&parseInt(process.env.PORT)||3000;const host=args['--hostname']||'0.0.0.0';const appUrl=`http://${host==='0.0.0.0'?'localhost':host}:${port}`;(0,_startServer.default)({dir,dev:true,isNextDevCommand:true},port,host).then(async app=>{(0,_output.startedDevelopmentServer)(appUrl,`${host}:${port}`);// Start preflight after server is listening and ignore errors:
preflight().catch(()=>{});// Finalize server bootup:
await app.prepare();}).catch(err=>{if(err.code==='EADDRINUSE'){let errorMessage=`Port ${port} is already in use.`;const pkgAppPath=require('next/dist/compiled/find-up').sync('package.json',{cwd:dir});const appPackage=require(pkgAppPath);if(appPackage.scripts){const nextScript=Object.entries(appPackage.scripts).find(scriptLine=>scriptLine[1]==='next');if(nextScript){errorMessage+=`\nUse \`npm run ${nextScript[0]} -- -p <some other port>\`.`;}}console.error(errorMessage);}else{console.error(err);}process.nextTick(()=>process.exit(1));});};exports.nextDev=nextDev;
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