.last() on a .filter()'d vector returning undefined (v. 2.4.0)

[dahjelle]

Hi!

Just starting with immutable-js, so please let me know if I'm missing something simple.

I would have expected the following node snippet to return 3:

var Immutable = require( "immutable" );
Immutable.Vector( 1, 2, 3, 4 )
  .filter( function( x ) { return x === 3; } )
  .last(); // undefined

It returns undefined. Is this due to the lazy nature of sequences?

If I use toVector() in the chain, it returns 3 as expected.

var Immutable = require( "immutable" );
Immutable.Vector( 1, 2, 3, 4 )
  .filter( function( x ) { return x === 3; } )
  .toVector()
  .last(); // 3

[leebyron]

Solved in 9e63cc0 - will be on npm soon

[leebyron]

Thanks again for the report!

[dahjelle]

That's awesome—thanks!