Module promise/tap

tap

• tap<T>(fn: Void1<T>, x: T): Promise<T>
• tap(fn: Void1<any>): <T>(x: T) => Promise<T>

• Runs the given promise with the supplied argument. Returns the argument, when promise is resolved.

  example

   var sayX = x => console.log('x is ' + x);
   Promise.resolve(5).then(promiseTap(sayX));
   // logs 'x is 5'
  

  Type parameters

  • T

  Parameters

  • fn: Void1<T>

    The function to call with x. The return value of fn will be thrown away.

  • x: T

  Returns Promise<T>

  x.

• Runs the given promise with the supplied argument. Returns the argument, when promise is resolved.

  example

   var sayX = x => console.log('x is ' + x);
   Promise.resolve(5).then(promiseTap(sayX));
   // logs 'x is 5'
  

  Parameters

  • fn: Void1<any>

    The function to call with x. The return value of fn will be thrown away.

  Returns <T>(x: T) => Promise<T>

  x.

  • • <T>(x: T): Promise<T>

    • Type parameters

      • T

      Parameters

      • x: T

      Returns Promise<T>