Create Directory When Writing To File In Node js

Question

I ve been tinkering with Node js and found a little problem   I ve got a script which resides in a directory called data   I want the script to write some data to a file in a subdirectory within the data subdirectory   However I am getting the following error      Error  ENOENT  open  D  data tmp test txt   errno  34  code   ENOENT   path   D   data  tmp  test txt      The code is as follows   var fs   require  fs    fs writeFile  tmp test txt    Hey there    function err        if err            console log err         else           console log  The file was saved                  Can anybody help me in finding out how to make Node js create the directory structure if it does not exits for writing to a file

User · Accepted Answer

Node   10 12 0  fs mkdir now accepts a   recursive  true   option like so      Creates  tmp a apple  regardless of whether   tmp  and  tmp a exist  fs mkdir   tmp a apple     recursive  true     err    gt      if  err  throw err        or with a promise   fs promises mkdir   tmp a apple     recursive  true    catch console error     Node  lt   10 11 0  You can solve this with a package like mkdirp or fs-extra  If you don t want to install a package  please see Tiago Peres Fran  a s answer below

User · Answer

Shameless plug alert   You will have to check for each directory in the path structure you want and create it manually if it doesn t exist  All the tools to do so are already there in Node s fs module  but you can do all of that simply with my mkpath module  https   github com jrajav mkpath

User · Answer

With node-fs-extra you can do it easily    Install it  npm install --save fs-extra   Then use the outputFile method  Its documentation says      Almost the same as writeFile  i e  it overwrites   except that if the   parent directory does not exist  it s created    You can use it in three ways   Callback style  const fse   require  fs-extra     fse outputFile  tmp test txt    Hey there    err   gt      if err        console log err       else       console log  The file was saved              Using Promises  If you use promises  and I hope so  this is the code    fse outputFile  tmp test txt    Hey there        then      gt           console log  The file was saved               catch err   gt           console error err           Sync version  If you want a sync version  just use this code   fse outputFileSync  tmp test txt    Hey there      For a complete reference  check the outputFile documentation and all node-fs-extra supported methods

User · Answer

Same answer as above  but with async await and ready to use  const fs   require  fs promises    const path   require  path     async function isExists path      try       await fs access path       return true      catch       return false          async function writeFile filePath  data      try       const dirname   path dirname filePath       const exist   await isExists dirname       if   exist          await fs mkdir dirname   recursive  true                   await fs writeFile filePath  data   utf8        catch  err        throw new Error err          Example   async        const data    Hello  World      await writeFile  dist posts hello-world html   data

User · Answer

first taking the full path including directory and extracting the directory   Just for the sake of example cwd process cwd   filendir path resolve cwd   site assets text   node txt       Extracting directory name mkdir path dirname filendir   Now make the directory  add option recursive true as stated by  David Weldon fs mkdirSync mkdir  recursive true    Then make the file data  Some random text  fs writeFileSync filendir data

User · Answer

I just published this module because I needed this functionality   https   www npmjs org package filendir  It works like a wrapper around Node js fs methods  So you can use it exactly the same way you would with fs writeFile and fs writeFileSync  both async and synchronous writes

User · Answer

Since I cannot comment yet  I m posting an enhanced answer based on  tiago-peres-fran  a fantastic solution  thanks    His code does not make directory in a case where only the last directory is missing in the path  e g  the input is  C  test abc  and  C  test  already exists  Here is a snippet that works   function mkdirp filepath        var dirname   path dirname filepath        if   fs existsSync dirname             mkdirp dirname              fs mkdirSync filepath

User · Answer

If you don t want to use any additional package  you can call the following function before creating your file   var path   require  path        fs   require  fs     function ensureDirectoryExistence filePath      var dirname   path dirname filePath     if  fs existsSync dirname         return true        ensureDirectoryExistence dirname     fs mkdirSync dirname

User · Answer

My advise is  try not to rely on dependencies when you can easily do it with few lines of codes  Here s what you re trying to achieve in 14 lines of code   fs isDir   function dpath        try           return fs lstatSync dpath  isDirectory          catch e            return false           fs mkdirp   function dirname        dirname   path normalize dirname  split path sep       dirname forEach  sdir index   gt           var pathInQuestion   dirname slice 0 index 1  join path sep           if   fs isDir pathInQuestion    amp  amp  pathInQuestion  fs mkdirSync pathInQuestion

[javascript] Create Directory When Writing To File In Node.js

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