Call a global variable inside module

Question

I have a typescript file called Projects ts that I want to reference a global variable declared in a bootstrap plugin called bootbox js   I want to access a variable called bootbox from within a TypeScript classes   Is it possible

User · Answer

global d ts declare global     namespace NodeJS       interface Global         bootbox  string    Specify ur type here use  string  for brief                 somewhere else const bootbox   global bootbox    somewhere else global bootbox    boom

User · Answer

Sohnee solutions is cleaner  but you can also try   window  bootbox

User · Answer

If You want to have a reference to this variable across the whole project  create somewhere d ts file  e g  globals d ts  Fill it with your global variables declarations  e g    declare const BootBox   boot     box     Now you can reference it anywhere across the project  just like that   const bootbox   BootBox    Here s an example

User · Answer

You need to tell the compiler it has been declared   declare var bootbox  any    If you have better type information you can add that too  in place of any

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If it is something that you reference but never mutate  then use const   declare const bootbox

User · Answer

Download the bootbox typings  Then add a reference to it inside your  ts file

User · Answer

For those who didn t know already  you would have to put the declare statement outside your class just like this   declare var Chart  any    Component     selector   my-component     templateUrl     my-component component html     styleUrls      my-component component scss       export class MyComponent         you can use Chart now and compiler wont complain     private color   Chart color      In TypeScript the declare keyword is used where you want to define a variable that may not have originated from a TypeScript file    It is like you tell the compiler that  I know this variable will have a value at runtime  so don t throw a compilation error

[typescript] Call a global variable inside module

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