Error: Cannot find module 'http-errors' on local npm












1














I got a problem on understanding how node resolve module in local node_modules folder. My app using a module called http-errors which is a dependency in node_modules. I used a Powershell command to confirm it



❯ npm ls --prod | Select-String -Pattern "http-errors"



| | +-- http-errors@1.6.3

| | | +-- http-errors@1.6.2

| | +-- http-errors@1.6.3


Why do I still have error on cannot find http-errors module?



Add: This is where I require http-errors



const createError = require('http-errors');



function catchNotFound(_req, _res, next) {

  next(createError(404));

}





javascript node.js npm







share|improve this question




















  • 1




    can you share where you are using http-errors in your js ?
    – Pranay Tripathi
    Nov 19 '18 at 12:34
















1














I got a problem on understanding how node resolve module in local node_modules folder. My app using a module called http-errors which is a dependency in node_modules. I used a Powershell command to confirm it



❯ npm ls --prod | Select-String -Pattern "http-errors"



| | +-- http-errors@1.6.3

| | | +-- http-errors@1.6.2

| | +-- http-errors@1.6.3


Why do I still have error on cannot find http-errors module?



Add: This is where I require http-errors



const createError = require('http-errors');



function catchNotFound(_req, _res, next) {

  next(createError(404));

}





javascript node.js npm







share|improve this question




















  • 1




    can you share where you are using http-errors in your js ?
    – Pranay Tripathi
    Nov 19 '18 at 12:34














1












1








1







I got a problem on understanding how node resolve module in local node_modules folder. My app using a module called http-errors which is a dependency in node_modules. I used a Powershell command to confirm it



❯ npm ls --prod | Select-String -Pattern "http-errors"



| | +-- http-errors@1.6.3

| | | +-- http-errors@1.6.2

| | +-- http-errors@1.6.3


Why do I still have error on cannot find http-errors module?



Add: This is where I require http-errors



const createError = require('http-errors');



function catchNotFound(_req, _res, next) {

  next(createError(404));

}





javascript node.js npm







share|improve this question















I got a problem on understanding how node resolve module in local node_modules folder. My app using a module called http-errors which is a dependency in node_modules. I used a Powershell command to confirm it



❯ npm ls --prod | Select-String -Pattern "http-errors"



| | +-- http-errors@1.6.3

| | | +-- http-errors@1.6.2

| | +-- http-errors@1.6.3


Why do I still have error on cannot find http-errors module?



Add: This is where I require http-errors



const createError = require('http-errors');



function catchNotFound(_req, _res, next) {

  next(createError(404));

}





javascript node.js npm




javascript node.js npm






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 19 '18 at 12:38

























asked Nov 19 '18 at 12:32









TrmaPhi

104




104








  • 1




    can you share where you are using http-errors in your js ?
    – Pranay Tripathi
    Nov 19 '18 at 12:34














  • 1




    can you share where you are using http-errors in your js ?
    – Pranay Tripathi
    Nov 19 '18 at 12:34








1




1




can you share where you are using http-errors in your js ?
– Pranay Tripathi
Nov 19 '18 at 12:34




can you share where you are using http-errors in your js ?
– Pranay Tripathi
Nov 19 '18 at 12:34












1 Answer
1






active

oldest

votes


















0














I figured out how node.js resolve modules. Open REPL session and type



❯ node

> module.paths

[ 'C:\Users\truong\Projects\DDAC\repl\node_modules',

  'C:\Users\truong\Projects\DDAC\node_modules',

  'C:\Users\truong\Projects\node_modules',

  'C:\Users\truong\node_modules',

  'C:\Users\node_modules',

  'C:\node_modules',

  'C:\Users\truong\.node_modules',

  'C:\Users\truong\.node_libraries',

  'C:\Program Files\nodejs\lib\node' ]

> require('http-errors')

Error: Cannot find module 'http-errors'

    at Function.Module._resolveFilename (module.js:536:15)

>


Node.js can only resolve modules in those paths. Even npm have that dependency, but if there is no directory name exactly like module name, require cannot be resolved. Read more at this article.






share|improve this answer





















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    0














    I figured out how node.js resolve modules. Open REPL session and type



    ❯ node
    
> module.paths
    
[ 'C:\Users\truong\Projects\DDAC\repl\node_modules',
    
  'C:\Users\truong\Projects\DDAC\node_modules',
    
  'C:\Users\truong\Projects\node_modules',
    
  'C:\Users\truong\node_modules',
    
  'C:\Users\node_modules',
    
  'C:\node_modules',
    
  'C:\Users\truong\.node_modules',
    
  'C:\Users\truong\.node_libraries',
    
  'C:\Program Files\nodejs\lib\node' ]
    
> require('http-errors')
    
Error: Cannot find module 'http-errors'
    
    at Function.Module._resolveFilename (module.js:536:15)
    
>


    Node.js can only resolve modules in those paths. Even npm have that dependency, but if there is no directory name exactly like module name, require cannot be resolved. Read more at this article.






    share|improve this answer


























      0














      I figured out how node.js resolve modules. Open REPL session and type



      ❯ node
      
> module.paths
      
[ 'C:\Users\truong\Projects\DDAC\repl\node_modules',
      
  'C:\Users\truong\Projects\DDAC\node_modules',
      
  'C:\Users\truong\Projects\node_modules',
      
  'C:\Users\truong\node_modules',
      
  'C:\Users\node_modules',
      
  'C:\node_modules',
      
  'C:\Users\truong\.node_modules',
      
  'C:\Users\truong\.node_libraries',
      
  'C:\Program Files\nodejs\lib\node' ]
      
> require('http-errors')
      
Error: Cannot find module 'http-errors'
      
    at Function.Module._resolveFilename (module.js:536:15)
      
>


      Node.js can only resolve modules in those paths. Even npm have that dependency, but if there is no directory name exactly like module name, require cannot be resolved. Read more at this article.






      share|improve this answer
























        0












        0








        0






        I figured out how node.js resolve modules. Open REPL session and type



        ❯ node
        
> module.paths
        
[ 'C:\Users\truong\Projects\DDAC\repl\node_modules',
        
  'C:\Users\truong\Projects\DDAC\node_modules',
        
  'C:\Users\truong\Projects\node_modules',
        
  'C:\Users\truong\node_modules',
        
  'C:\Users\node_modules',
        
  'C:\node_modules',
        
  'C:\Users\truong\.node_modules',
        
  'C:\Users\truong\.node_libraries',
        
  'C:\Program Files\nodejs\lib\node' ]
        
> require('http-errors')
        
Error: Cannot find module 'http-errors'
        
    at Function.Module._resolveFilename (module.js:536:15)
        
>


        Node.js can only resolve modules in those paths. Even npm have that dependency, but if there is no directory name exactly like module name, require cannot be resolved. Read more at this article.






        share|improve this answer












        I figured out how node.js resolve modules. Open REPL session and type



        ❯ node
        
> module.paths
        
[ 'C:\Users\truong\Projects\DDAC\repl\node_modules',
        
  'C:\Users\truong\Projects\DDAC\node_modules',
        
  'C:\Users\truong\Projects\node_modules',
        
  'C:\Users\truong\node_modules',
        
  'C:\Users\node_modules',
        
  'C:\node_modules',
        
  'C:\Users\truong\.node_modules',
        
  'C:\Users\truong\.node_libraries',
        
  'C:\Program Files\nodejs\lib\node' ]
        
> require('http-errors')
        
Error: Cannot find module 'http-errors'
        
    at Function.Module._resolveFilename (module.js:536:15)
        
>


        Node.js can only resolve modules in those paths. Even npm have that dependency, but if there is no directory name exactly like module name, require cannot be resolved. Read more at this article.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 19 '18 at 12:51









        TrmaPhi

        104




        104






























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