node js TypeError path must be absolute or specify root to res sendFile failed to parse JSON

Question

add  So my next problem is that when i try adding a new dependence  npm install --save socket io   The JSON file is also valid  I get this error  Failed to parse json  npm ERR  Unexpected string npm ERR  File   Users John package json npm ERR  Failed to parse package json data  npm ERR  package json must be actual JSON  not just JavaScript  npm ERR   npm ERR  This is not a bug in npm  npm ERR  Tell the package author to fix their package json file  JSON parse    So I ve been trying to figure out why this error has been returning  All of the files  HTML JSON JS  are inside the same folder on my desktop  I m using node js and socket io  This is my JS file   var app   require  express      var http   require  http   Server app    app get      function req  res     res sendFile  index html         http listen 3000 function        console log  listening on   3000          This is what is getting returned   MacBook-Pro   John  node  Users John Desktop Chatapp index js  listening on   3000 TypeError  path must be absolute or specify root to res sendFile     at ServerResponse sendFile   Users John node modules express lib response js 389 11      at  Users John Desktop Chatapp index js 5 7     at Layer handle  as handle request    Users John node modules express lib router layer js 76 5      at next   Users John node modules express lib router route js 100 13      at Route dispatch   Users John node modules express lib router route js 81 3      at Layer handle  as handle request    Users John node modules express lib router layer js 76 5      at  Users John node modules express lib router index js 234 24     at Function proto process params   Users John node modules express lib router index js 312 12      at  Users John node modules express lib router index js 228 12     at Function match layer   Users John node modules express lib router index js 295 3  TypeError  path must be absolute or specify root to res sendFile     at ServerResponse sendFile   Users John node modules express lib response js 389 11      at  Users John Desktop Chatapp index js 5 7     at Layer handle  as handle request    Users John node modules express lib router layer js 76 5      at next   Users John node modules express lib router route js 100 13      at Route dispatch   Users John node modules express lib router route js 81 3      at Layer handle  as handle request    Users John node modules express lib router layer js 76 5      at  Users John node modules express lib router index js 234 24     at Function proto process params   Users John node modules express lib router index js 312 12      at  Users John node modules express lib router index js 228 12     at Function match layer   Users John node modules express lib router index js 295 3

User · Answer

If you trust the path  path resolve is an option   var path   require  path        All other routes should redirect to the index html   app route            get function req  res          res sendFile path resolve app get  appPath       index html

User · Answer

Try adding root path   app get      function req  res        res sendFile  index html     root    dirname

User · Answer

in  mjs files we for now don t have   dirname  hence  res sendFile  index html     root

User · Answer

this configuration in app js worked fine for me         production mode if  process env NODE ENV      quot production quot       app use express static path join   dirname   quot client build quot        app get  quot   quot    req  res    gt        res sendFile path join    dirname    quot  client build index html quot                  build mode app get  quot   quot    req  res    gt      res sendFile path join   dirname    quot  client public index html quot

User · Answer

The error is pretty clear  you need to specify an absolute  instead of relative  path and or set root in the config object for res sendFile    Examples      assuming index html is in the same directory as this script  res sendFile   dirname     index html      or specify a root  which is used as the base path for the first argument to res sendFile     res sendFile  index html     root    dirname       Specifying the root path is more useful when you re passing a user-generated file path which could potentially contain malformed malicious parts like     e g                    etc passwd   Setting the root path prevents such malicious paths from being used to access files outside of that base path

User · Answer

If you are working on Root Directory then you can use this approach  res sendFile   dirname     FOLDER IN ROOT DIRECTORY index html      but if you are using Routes which is inside a folder lets say  Routes someRoute js then you will need to do something like this  const path   require  path        route get   some route    req  res    gt       res sendFile path resolve  FOLDER IN ROOT DIRECTORY index html

User · Answer

I used the code below and tried to show the sitemap xml file router get   sitemap xml   function  req  res        res sendFile  sitemap xml     root

User · Answer

The error is pretty straightforward  Most likely the reason is that your index html file is not in the root directory    Or if it is in the root directory then the relative referencing is not working    So you need to tell the server exact location of your file   This could be done by using dirname method in NodeJs   Just replace your code with this one    app get      function req  res     res sendFile   dirname     index html          Make sure that your add the slash     symbol before your homepage  Otherwise your path will become  rootDirectoryindex html  Whereas you want it to be  rootDirectory index html

User · Answer

You might consider using double slashes on your directory e g   x000D   x000D  app get      req res   gt   x000D      res sendFile  C   Users  DOREEN  Desktop  Fitness Finder      index html   x000D     x000D   x000D   x000D

User · Answer

I solve this by using path variable  The sample code will look like below   var path   require  path     app get       req  res    gt        res sendFile path join   dirname     index html

User · Answer

This can be resolved in another way    app get      function req  res        res send    process env PWD  index html          process env PWD will prepend the working directory when the process was started

User · Answer

In Typescript with relative path to the icon    import path from  path    route get   favicon ico     req  res    gt  res sendFile path join   dirname      static myicon png

User · Answer

It will redirects to index html on localhost 8080 call   app get     function req res       res sendFile  index html     root    dirname

User · Answer

I did this and now my app is working properly    res sendFile  your drive   your subfolders  file html

[javascript] node.js TypeError: path must be absolute or specify root to res.sendFile [failed to parse JSON]

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