node js require all files in a folder

Question

How do I require all files in a folder in node js   need something like   files forEach function  v k        require routes   require    routes   v

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Require all files from routes folder and apply as middleware  No external modules needed      require const path   require  path    const   readdirSync     require  fs        apply as middleware readdirSync    routes   map  r    gt  app use   api   require    routes     r

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Using this function you can require a whole dir   const GetAllModules     dirname     gt        if   dirname             let dirItems   require   fs    readdirSync  dirname            return dirItems reduce    acc  value  index     gt                if   PATH extname  value        js   amp  amp  value toLowerCase       index js                      let moduleName   value replace    js g                        acc  moduleName     require     dirname    moduleName                                return acc                               calling this function   let dirModules   GetAllModules   dirname

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If you include all files of   js in directory example   app lib   js     In directory app lib  example js   module exports   function  example        example-2 js   module exports   function  example2        In directory app create index js  index js   module exports   require    app lib

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Expanding on this glob solution  Do this if you want to import all modules from a directory into index js and then import that index js in another part of the application  Note that template literals aren t supported by the highlighting engine used by stackoverflow so the code might look strange here   const glob   require  glob     let allOfThem       glob sync      dirname    js   forEach  file    gt         see note about this in example below      allOfThem        allOfThem     require file         module exports   allOfThem    Full Example  Directory structure  globExample example js globExample foobars index js globExample foobars unexpected js globExample foobars barit js globExample foobars fooit js   globExample example js  const   foo  bar  keepit     require    foobars index    const longStyle   require    foobars index     console log foo        foo ran console log bar        bar ran console log keepit        keepit ran unexpected  console log longStyle foo        foo ran console log longStyle bar        bar ran console log longStyle keepit        keepit ran unexpected   globExample foobars index js  const glob   require  glob       Note the following style also works with multiple exports per file  barit js example  but will overwrite if you have 2 exports with the same name  unexpected js and barit js have a keepit function  in the files being imported  As a result  this method is best used when your exporting one module per file and use the filename to easily identify what is in it   Also Note  This ignores itself  index js  by default to prevent infinite loop      let allOfThem       glob sync      dirname    js   forEach  file    gt      allOfThem        allOfThem     require file          module exports   allOfThem    globExample foobars unexpected js  exports keepit        gt   keepit ran unexpected     globExample foobars barit js  exports bar        gt   bar run    exports keepit        gt   keepit ran     globExample foobars fooit js  exports foo        gt   foo ran     From inside project with glob installed  run node example js    node example js foo ran bar run keepit ran unexpected foo ran bar run keepit ran unexpected

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I recommend using glob to accomplish that task   var glob   require   glob        path   require   path      glob sync     routes      js    forEach  function  file       require  path resolve  file

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I have a folder  fields full of files with a single class each  ex   fields Text js - gt  Test class fields Checkbox js - gt  Checkbox class   Drop this in fields index js to export each class   var collectExports  fs  path      hasProp      hasOwnProperty   fs   require  fs        path   require  path     collectExports   function file      var func  include   results     if  path extname file        js   amp  amp  file      index js         include   require        file        results           for  func in include          if     hasProp call include  func   continue         results push exports func    include func              return  results          fs readdirSync    fields    forEach collectExports     This makes the modules act more like they would in Python   var text   new Fields Text   var checkbox   new Fields Checkbox

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I m using node modules copy-to module to create a single file to require all the files in our NodeJS-based system   The code for our utility file looks like this          Module dependencies       var copy   require  copy-to    copy require    module1     and require    module2     and require    module3     to module exports     In all of the files  most functions are written as exports  like so   exports function1   function         function contents    exports function2   function         function contents    exports function3   function         function contents      So  then to use any function from a file  you just call   var utility   require    utility     var response   utility function2       or whatever the name of the function is

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I know this question is 5  years old  and the given answers are good  but I wanted something a bit more powerful for express  so i created the express-map2 package for npm  I was going to name it simply express-map  however the people at yahoo already have a package with that name  so i had to rename my package   1  basic usage   app js  or whatever you call it   var app   require  express       1  include express  app set  controllers    dirname   controllers       2  set path to your controllers   require  express-map2   app      3  patch map   into express  app map        GET     test        GET  foo   middleware foo test        GET  bar   middleware bar test    seperate your handlers with a comma         controller usage     single function module exports   function req res          export an object with multiple functions  module exports          foo  function req res                bar  function req res                2  advanced usage  with prefixes   app map   api v1 books         GET      books list      GET  api v1 books      GET   id    books loadOne      GET  api v1 books 5      DELETE   id    books delete      DELETE  api v1 books 5      PUT   id    books update      PUT  api v1 books 5      POST      books create     POST  api v1 books       As you can see  this saves a ton of time and makes the routing of your application dead simple to write  maintain  and understand  it supports all of the http verbs that express supports  as well as the special  all   method    npm package  https   www npmjs com package express-map2 github repo  https   github com r3wt express-map

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When require is given the path of a folder  it ll look for an index js file in that folder  if there is one  it uses that  and if there isn t  it fails   It would probably make most sense  if you have control over the folder  to create an index js file and then assign all the  modules  and then simply require that   yourfile js  var routes   require    routes      index js  exports something   require    routes something js    exports others   require    routes others js      If you don t know the filenames you should write some kind of loader   Working example of a loader   var normalizedPath   require  path   join   dirname   routes     require  fs   readdirSync normalizedPath  forEach function file      require    routes     file           Continue application logic here

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Another option is to use the package require-dir which let s you do the following  It supports recursion as well    var requireDir   require  require-dir    var dir   requireDir    path to dir

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One module that I have been using for this exact use case is require-all   It recursively requires all files in a given directory and its sub directories as long they don t match the excludeDirs property   It also allows specifying a file filter and how to derive the keys of the returned hash from the filenames

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Can use   https   www npmjs com package require-file-directory   Require selected files with name only or all files  No need of absoulute path  Easy to understand and use

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Base on  tbranyen s solution  I create an index js file that load arbitrary javascripts under current folder as part of the exports       Load    js  under current directory as properties     i e    User js  will become  exports  User    or  exports User  require  fs   readdirSync   dirname        forEach function file      if  file match    js        null  amp  amp  file      index js         var name   file replace   js            exports name    require        file             Then you can require this directory from any where else

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One more option is require-dir-all combining features from most popular packages   Most popular require-dir does not have options to filter the files dirs and does not have map function  see below   but uses small trick to find module s current path   Second by popularity require-all has regexp filtering and preprocessing  but lacks relative path  so you need to use   dirname  this has pros and contras  like    var libs   require  require-all     dirname     lib      Mentioned here require-index is quite minimalistic   With map you may do some preprocessing  like create objects and pass config values  assuming modules below exports constructors       Store config for each module in config object properties     with property names corresponding to module names  var config       module1    value   config1       module2    value   config2           Require all files in modules subdirectory  var modules   require  require-dir-all       modules      Directory to require         Options         function to be post-processed over exported object for each require d module      map  function reqModule             create new object with corresponding config passed to constructor        reqModule exports   new reqModule exports  config reqModule name                      Now  modules  object holds not exported constructors      but objects constructed using values provided in  config

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