can
Version:
MIT-licensed, client-side, JavaScript framework that makes building rich web applications easy.
23 lines (18 loc) • 509 B
JavaScript
define(function() {
function addGetHookIf( conditionFn, hookFn ) {
// Define the hook, we'll check on the first run if it's really needed.
return {
get: function() {
if ( conditionFn() ) {
// Hook not needed (or it's not possible to use it due
// to missing dependency), remove it.
delete this.get;
return;
}
// Hook needed; redefine it so that the support test is not executed again.
return (this.get = hookFn).apply( this, arguments );
}
};
}
return addGetHookIf;
});