Question

  dispose: function() {
    var disposer;
    while (disposer = this._disposers.shift()) { // expected a conditional expression and instead saw an assignment.
      disposer();
    }
  },

jshint isn’t happy that disposer is assigned in the while loop.

is there any way to maintain this logic and make it jshint friendly?

Answer 1

Unless I missed something…

dispose: function() {
    var disposer = this._disposers.shift();
    while (disposer) {
        disposer();
        disposer = this._disposers.shift();
    }
},

You may also want to buff up your conditional:

while (typeof disposer === 'function') {

Working example: http://jsfiddle.net/DPNYq/