Uncaught TypeError intermediate value is not a function

Question

Everything works fine when I wrote the js logic in a closure as a single js file  as    function win        main logic here    win expose1           win expose2           window    but when I try to insert a logging alternative function before that closure in the same js file     window Glog   function msg        console log msg         this was added before the main closure     function win        the former closure that contains the main javascript logic      window    it complains that there is a TypeError   Uncaught TypeError   intermediate value       is not a function   What did I do wrong

User · Answer

To make semicolon rules simple

Every line that begins with a (, [, `, or any operator (/, +, - are the only valid ones), must begin with a semicolon.

func()
;[0].concat(myarr).forEach(func)
;(myarr).forEach(func)
;`hello`.forEach(func)
;/hello/.exec(str)
;+0
;-0

This prevents a

func()[0].concat(myarr).forEach(func)(myarr).forEach(func)`hello`.forEach(func)/hello/.forEach(func)+0-0

monstrocity.

Additional Note

To mention what will happen: brackets will index, parentheses will be treated as function parameters. The backtick would transform into a tagged template, and regex or explicitly signed integers will turn into operators. Of course, you can just add a semicolon to the end of every line. It's good to keep mind though when you're quickly prototyping and are dropping your semicolons.

Also, adding semicolons to the end of every line won't help you with the following, so keep in mind statements like

return // Will automatically insert semicolon, and return undefined.
    (1+2);
i // Adds a semicolon
   ++ // But, if you really intended i++ here, your codebase needs help.

The above case will happen to return/continue/break/++/--. Any linter will catch this with dead-code or ++/-- syntax error (++/-- will never realistically happen).

Finally, if you want file concatenation to work, make sure each file ends with a semicolon. If you're using a bundler program (recommended), it should do this automatically.

User · Answer

Error Case   var userListQuery         userId             in  result             isCameraAdded   true      cameraInfo findtext           searchQuery   userListQuery    Output   TypeError   intermediate value  intermediate value  is not a function   Fix  You are missing a semi-colon     to separate the expressions  userListQuery         userId             in  result             isCameraAdded   true       Without a semi colon  the error is produced    cameraInfo findtext           searchQuery   userListQuery

User · Answer

I have faced this issue when I created a new ES2015 class where the property name was equal to the method name    e g     class Test    constructor          this test    test         test  test        this test   test        let t   new Test   t test  new Test     Please note this implementation was in NodeJS 6 10   As a workaround  if you do not want to use the boring  setTest  method name   you could use a prefix for your  private  properties  like  test    Open your Developer Tools in jsfiddle

User · Answer

For me it was much more simple but it took me a while to figure it out  We basically had in our  jslib  some array forEach item   gt        do stuff item         Turns out Unity  emscripten   just doesn t like that syntax  We replaced it with a good old for-loop and it stoped complaining right away  I really hate it that it doesn t show the line it is complaining about  but anyway  fool me twice shame on me

User · Answer

Error Case     var handler   function parameters      console log parameters       function           IIFE     some code         Output  TypeError   intermediate value  intermediate value  is not a function  How to Fix IT -  because you are missing semi colan    to separate expressions      Fixed     var handler   function parameters      console log parameters          lt --- Add this semicolon if you miss that semi colan          error will occurs     function           IIFE     some code         why this error comes     Reason    specific rules for automatic semicolon insertion which is given ES6 stanards

User · Answer

The error is a result of the missing semicolon on the third line   window Glog   function msg      console log msg          lt --- Add this semicolon   function win                window     The ECMAScript specification has specific rules for automatic semicolon insertion  however in this case a semicolon isn t automatically inserted because the parenthesised expression that begins on the next line can be interpreted as an argument list for a function call   This means that without that semicolon  the anonymous window Glog function was being invoked with a function as the msg parameter  followed by  window  which was subsequently attempting to invoke whatever was returned   This is how the code was being interpreted   window Glog   function msg      console log msg     function win                window

User · Answer

When I create a root class  whose methods I defined using the arrow functions  When inheriting and overwriting the original function I noticed the same issue  class C     x        gt  1         class CC extends C     x    foo    gt   super x     foo      let add   new CC  console log add x 4     this is solved by defining the method of the parent class without arrow functions class C     x          return 1               class CC extends C     x   foo   gt   super x     foo      let add   new CC  console log add x 4

[javascript] Uncaught TypeError: (intermediate value)(...) is not a function

To make semicolon rules simple

Additional Note

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