next/dist/next-server/server/config.js

The React Framework

"use strict";exports.__esModule=true;exports.normalizeConfig=normalizeConfig;exports.default=loadConfig;exports.isTargetLikeServerless=isTargetLikeServerless;var _chalk=_interopRequireDefault(require("chalk"));var _findUp=_interopRequireDefault(require("next/dist/compiled/find-up"));var _os=_interopRequireDefault(require("os"));var _path=require("path");var _utils=require("../lib/utils");var Log=_interopRequireWildcard(require("../../build/output/log"));var _constants=require("../lib/constants");var _imageConfig=require("./image-config");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;}function _interopRequireDefault(obj){return obj&&obj.__esModule?obj:{default:obj};}const targets=['server','serverless','experimental-serverless-trace'];const reactModes=['legacy','blocking','concurrent'];const defaultConfig={env:[],webpack:null,webpackDevMiddleware:null,distDir:'.next',assetPrefix:'',configOrigin:'default',useFileSystemPublicRoutes:true,generateBuildId:()=>null,generateEtags:true,pageExtensions:['tsx','ts','jsx','js'],target:'server',poweredByHeader:true,compress:true,analyticsId:process.env.VERCEL_ANALYTICS_ID||'',images:_imageConfig.imageConfigDefault,devIndicators:{buildActivity:true},onDemandEntries:{maxInactiveAge:60*1000,pagesBufferLength:2},amp:{canonicalBase:''},basePath:'',sassOptions:{},trailingSlash:false,i18n:null,productionBrowserSourceMaps:false,experimental:{cpus:Math.max(1,(Number(process.env.CIRCLE_NODE_TOTAL)||(_os.default.cpus()||{length:1}).length)-1),plugins:false,profiling:false,sprFlushToDisk:true,reactMode:'legacy',workerThreads:false,pageEnv:false,optimizeFonts:false,optimizeImages:false,optimizeCss:false,scrollRestoration:false,scriptLoader:false},future:{strictPostcssConfiguration:false,excludeDefaultMomentLocales:false,webpack5:Number(process.env.NEXT_PRIVATE_TEST_WEBPACK5_MODE)>0},serverRuntimeConfig:{},publicRuntimeConfig:{},reactStrictMode:false};const experimentalWarning=(0,_utils.execOnce)(()=>{Log.warn(_chalk.default.bold('You have enabled experimental feature(s).'));Log.warn(`Experimental features are not covered by semver, and may cause unexpected or broken application behavior. `+`Use them at your own risk.`);console.warn();});function assignDefaults(userConfig){if(typeof userConfig.exportTrailingSlash!=='undefined'){console.warn(_chalk.default.yellow.bold('Warning: ')+'The "exportTrailingSlash" option has been renamed to "trailingSlash". Please update your next.config.js.');if(typeof userConfig.trailingSlash==='undefined'){userConfig.trailingSlash=userConfig.exportTrailingSlash;}delete userConfig.exportTrailingSlash;}const config=Object.keys(userConfig).reduce((currentConfig,key)=>{const value=userConfig[key];if(value===undefined||value===null){return currentConfig;}if(key==='experimental'&&value&&value!==defaultConfig[key]){experimentalWarning();}if(key==='distDir'){if(typeof value!=='string'){throw new Error(`Specified distDir is not a string, found type "${typeof value}"`);}const userDistDir=value.trim();// don't allow public as the distDir as this is a reserved folder for
// public files
if(userDistDir==='public'){throw new Error(`The 'public' directory is reserved in Next.js and can not be set as the 'distDir'. https://err.sh/vercel/next.js/can-not-output-to-public`);}// make sure distDir isn't an empty string as it can result in the provided
// directory being deleted in development mode
if(userDistDir.length===0){throw new Error(`Invalid distDir provided, distDir can not be an empty string. Please remove this config or set it to undefined`);}}if(key==='pageExtensions'){if(!Array.isArray(value)){throw new Error(`Specified pageExtensions is not an array of strings, found "${value}". Please update this config or remove it.`);}if(!value.length){throw new Error(`Specified pageExtensions is an empty array. Please update it with the relevant extensions or remove it.`);}value.forEach(ext=>{if(typeof ext!=='string'){throw new Error(`Specified pageExtensions is not an array of strings, found "${ext}" of type "${typeof ext}". Please update this config or remove it.`);}});}if(!!value&&value.constructor===Object){currentConfig[key]={...defaultConfig[key],...Object.keys(value).reduce((c,k)=>{const v=value[k];if(v!==undefined&&v!==null){c[k]=v;}return c;},{})};}else{currentConfig[key]=value;}return currentConfig;},{});const result={...defaultConfig,...config};if(typeof result.assetPrefix!=='string'){throw new Error(`Specified assetPrefix is not a string, found type "${typeof result.assetPrefix}" https://err.sh/vercel/next.js/invalid-assetprefix`);}if(typeof result.basePath!=='string'){throw new Error(`Specified basePath is not a string, found type "${typeof result.basePath}"`);}if(result.basePath!==''){if(result.basePath==='/'){throw new Error(`Specified basePath /. basePath has to be either an empty string or a path prefix"`);}if(!result.basePath.startsWith('/')){throw new Error(`Specified basePath has to start with a /, found "${result.basePath}"`);}if(result.basePath!=='/'){if(result.basePath.endsWith('/')){throw new Error(`Specified basePath should not end with /, found "${result.basePath}"`);}if(result.assetPrefix===''){result.assetPrefix=result.basePath;}if(result.amp.canonicalBase===''){result.amp.canonicalBase=result.basePath;}}}if(result!=null&&result.images){const images=result.images;if(typeof images!=='object'){throw new Error(`Specified images should be an object received ${typeof images}.\nSee more info here: https://err.sh/next.js/invalid-images-config`);}if(images.domains){if(!Array.isArray(images.domains)){throw new Error(`Specified images.domains should be an Array received ${typeof images.domains}.\nSee more info here: https://err.sh/next.js/invalid-images-config`);}if(images.domains.length>50){throw new Error(`Specified images.domains exceeds length of 50, received length (${images.domains.length}), please reduce the length of the array to continue.\nSee more info here: https://err.sh/next.js/invalid-images-config`);}const invalid=images.domains.filter(d=>typeof d!=='string');if(invalid.length>0){throw new Error(`Specified images.domains should be an Array of strings received invalid values (${invalid.join(', ')}).\nSee more info here: https://err.sh/next.js/invalid-images-config`);}}if(images.deviceSizes){const{deviceSizes}=images;if(!Array.isArray(deviceSizes)){throw new Error(`Specified images.deviceSizes should be an Array received ${typeof deviceSizes}.\nSee more info here: https://err.sh/next.js/invalid-images-config`);}if(deviceSizes.length>25){throw new Error(`Specified images.deviceSizes exceeds length of 25, received length (${deviceSizes.length}), please reduce the length of the array to continue.\nSee more info here: https://err.sh/next.js/invalid-images-config`);}const invalid=deviceSizes.filter(d=>{return typeof d!=='number'||d<1||d>10000;});if(invalid.length>0){throw new Error(`Specified images.deviceSizes should be an Array of numbers that are between 1 and 10000, received invalid values (${invalid.join(', ')}).\nSee more info here: https://err.sh/next.js/invalid-images-config`);}}if(images.imageSizes){const{imageSizes}=images;if(!Array.isArray(imageSizes)){throw new Error(`Specified images.imageSizes should be an Array received ${typeof imageSizes}.\nSee more info here: https://err.sh/next.js/invalid-images-config`);}if(imageSizes.length>25){throw new Error(`Specified images.imageSizes exceeds length of 25, received length (${imageSizes.length}), please reduce the length of the array to continue.\nSee more info here: https://err.sh/next.js/invalid-images-config`);}const invalid=imageSizes.filter(d=>{return typeof d!=='number'||d<1||d>10000;});if(invalid.length>0){throw new Error(`Specified images.imageSizes should be an Array of numbers that are between 1 and 10000, received invalid values (${invalid.join(', ')}).\nSee more info here: https://err.sh/next.js/invalid-images-config`);}}if(!images.loader){images.loader='default';}if(!_imageConfig.VALID_LOADERS.includes(images.loader)){throw new Error(`Specified images.loader should be one of (${_imageConfig.VALID_LOADERS.join(', ')}), received invalid value (${images.loader}).\nSee more info here: https://err.sh/next.js/invalid-images-config`);}// Append trailing slash for non-default loaders
if(images.path){if(images.loader!=='default'&&images.path[images.path.length-1]!=='/'){images.path+='/';}}if(images.path===_imageConfig.imageConfigDefault.path&&result.basePath){images.path=`${result.basePath}${images.path}`;}}if(result.i18n){const{i18n}=result;const i18nType=typeof i18n;if(i18nType!=='object'){throw new Error(`Specified i18n should be an object received ${i18nType}.\nSee more info here: https://err.sh/next.js/invalid-i18n-config`);}if(!Array.isArray(i18n.locales)){throw new Error(`Specified i18n.locales should be an Array received ${typeof i18n.locales}.\nSee more info here: https://err.sh/next.js/invalid-i18n-config`);}const defaultLocaleType=typeof i18n.defaultLocale;if(!i18n.defaultLocale||defaultLocaleType!=='string'){throw new Error(`Specified i18n.defaultLocale should be a string.\nSee more info here: https://err.sh/next.js/invalid-i18n-config`);}if(typeof i18n.domains!=='undefined'&&!Array.isArray(i18n.domains)){throw new Error(`Specified i18n.domains must be an array of domain objects e.g. [ { domain: 'example.fr', defaultLocale: 'fr', locales: ['fr'] } ] received ${typeof i18n.domains}.\nSee more info here: https://err.sh/next.js/invalid-i18n-config`);}if(i18n.domains){const invalidDomainItems=i18n.domains.filter(item=>{if(!item||typeof item!=='object')return true;if(!item.defaultLocale)return true;if(!item.domain||typeof item.domain!=='string')return true;let hasInvalidLocale=false;if(Array.isArray(item.locales)){for(const locale of item.locales){if(typeof locale!=='string')hasInvalidLocale=true;for(const domainItem of i18n.domains||[]){if(domainItem===item)continue;if(domainItem.locales&&domainItem.locales.includes(locale)){console.warn(`Both ${item.domain} and ${domainItem.domain} configured the locale (${locale}) but only one can. Remove it from one i18n.domains config to continue`);hasInvalidLocale=true;break;}}}}return hasInvalidLocale;});if(invalidDomainItems.length>0){throw new Error(`Invalid i18n.domains values:\n${invalidDomainItems.map(item=>JSON.stringify(item)).join('\n')}\n\ndomains value must follow format { domain: 'example.fr', defaultLocale: 'fr', locales: ['fr'] }.\nSee more info here: https://err.sh/next.js/invalid-i18n-config`);}}if(!Array.isArray(i18n.locales)){throw new Error(`Specified i18n.locales must be an array of locale strings e.g. ["en-US", "nl-NL"] received ${typeof i18n.locales}.\nSee more info here: https://err.sh/next.js/invalid-i18n-config`);}const invalidLocales=i18n.locales.filter(locale=>typeof locale!=='string');if(invalidLocales.length>0){throw new Error(`Specified i18n.locales contains invalid values (${invalidLocales.map(String).join(', ')}), locales must be valid locale tags provided as strings e.g. "en-US".\n`+`See here for list of valid language sub-tags: http://www.iana.org/assignments/language-subtag-registry/language-subtag-registry`);}if(!i18n.locales.includes(i18n.defaultLocale)){throw new Error(`Specified i18n.defaultLocale should be included in i18n.locales.\nSee more info here: https://err.sh/next.js/invalid-i18n-config`);}// make sure default Locale is at the front
i18n.locales=[i18n.defaultLocale,...i18n.locales.filter(locale=>locale!==i18n.defaultLocale)];const localeDetectionType=typeof i18n.localeDetection;if(localeDetectionType!=='boolean'&&localeDetectionType!=='undefined'){throw new Error(`Specified i18n.localeDetection should be undefined or a boolean received ${localeDetectionType}.\nSee more info here: https://err.sh/next.js/invalid-i18n-config`);}}return result;}function normalizeConfig(phase,config){if(typeof config==='function'){config=config(phase,{defaultConfig});if(typeof config.then==='function'){throw new Error('> Promise returned in next config. https://err.sh/vercel/next.js/promise-in-next-config');}}return config;}function loadConfig(phase,dir,customConfig){if(customConfig){return assignDefaults({configOrigin:'server',...customConfig});}const path=_findUp.default.sync(_constants.CONFIG_FILE,{cwd:dir});// If config file was found
if(path!=null&&path.length){var _userConfig$amp,_userConfig$experimen;const userConfigModule=require(path);const userConfig=normalizeConfig(phase,userConfigModule.default||userConfigModule);if(Object.keys(userConfig).length===0){Log.warn('Detected next.config.js, no exported configuration found. https://err.sh/vercel/next.js/empty-configuration');}if(userConfig.target&&!targets.includes(userConfig.target)){throw new Error(`Specified target is invalid. Provided: "${userConfig.target}" should be one of ${targets.join(', ')}`);}if((_userConfig$amp=userConfig.amp)!=null&&_userConfig$amp.canonicalBase){const{canonicalBase}=userConfig.amp||{};userConfig.amp=userConfig.amp||{};userConfig.amp.canonicalBase=(canonicalBase.endsWith('/')?canonicalBase.slice(0,-1):canonicalBase)||'';}if((_userConfig$experimen=userConfig.experimental)!=null&&_userConfig$experimen.reactMode&&!reactModes.includes(userConfig.experimental.reactMode)){throw new Error(`Specified React Mode is invalid. Provided: ${userConfig.experimental.reactMode} should be one of ${reactModes.join(', ')}`);}return assignDefaults({configOrigin:_constants.CONFIG_FILE,configFile:path,...userConfig});}else{const configBaseName=(0,_path.basename)(_constants.CONFIG_FILE,(0,_path.extname)(_constants.CONFIG_FILE));const nonJsPath=_findUp.default.sync([`${configBaseName}.jsx`,`${configBaseName}.ts`,`${configBaseName}.tsx`,`${configBaseName}.json`],{cwd:dir});if(nonJsPath!=null&&nonJsPath.length){throw new Error(`Configuring Next.js via '${(0,_path.basename)(nonJsPath)}' is not supported. Please replace the file with 'next.config.js'.`);}}return defaultConfig;}function isTargetLikeServerless(target){const isServerless=target==='serverless';const isServerlessTrace=target==='experimental-serverless-trace';return isServerless||isServerlessTrace;}
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