+var global = require('../internals/global');
+var bind = require('../internals/function-bind-context');
+var call = require('../internals/function-call');
var anObject = require('../internals/an-object');
+var tryToString = require('../internals/try-to-string');
var isArrayIteratorMethod = require('../internals/is-array-iterator-method');
-var toLength = require('../internals/to-length');
-var bind = require('../internals/function-bind-context');
+var lengthOfArrayLike = require('../internals/length-of-array-like');
+var isPrototypeOf = require('../internals/object-is-prototype-of');
+var getIterator = require('../internals/get-iterator');
var getIteratorMethod = require('../internals/get-iterator-method');
var iteratorClose = require('../internals/iterator-close');
+var TypeError = global.TypeError;
+
var Result = function (stopped, result) {
this.stopped = stopped;
this.result = result;
};
+var ResultPrototype = Result.prototype;
+
module.exports = function (iterable, unboundFunction, options) {
var that = options && options.that;
var AS_ENTRIES = !!(options && options.AS_ENTRIES);
var IS_ITERATOR = !!(options && options.IS_ITERATOR);
var INTERRUPTED = !!(options && options.INTERRUPTED);
- var fn = bind(unboundFunction, that, 1 + AS_ENTRIES + INTERRUPTED);
+ var fn = bind(unboundFunction, that);
var iterator, iterFn, index, length, result, next, step;
var stop = function (condition) {
- if (iterator) iteratorClose(iterator);
+ if (iterator) iteratorClose(iterator, 'normal', condition);
return new Result(true, condition);
};
iterator = iterable;
} else {
iterFn = getIteratorMethod(iterable);
- if (typeof iterFn != 'function') throw TypeError('Target is not iterable');
+ if (!iterFn) throw TypeError(tryToString(iterable) + ' is not iterable');
// optimisation for array iterators
if (isArrayIteratorMethod(iterFn)) {
- for (index = 0, length = toLength(iterable.length); length > index; index++) {
+ for (index = 0, length = lengthOfArrayLike(iterable); length > index; index++) {
result = callFn(iterable[index]);
- if (result && result instanceof Result) return result;
+ if (result && isPrototypeOf(ResultPrototype, result)) return result;
} return new Result(false);
}
- iterator = iterFn.call(iterable);
+ iterator = getIterator(iterable, iterFn);
}
next = iterator.next;
- while (!(step = next.call(iterator)).done) {
+ while (!(step = call(next, iterator)).done) {
try {
result = callFn(step.value);
} catch (error) {
- iteratorClose(iterator);
- throw error;
+ iteratorClose(iterator, 'throw', error);
}
- if (typeof result == 'object' && result && result instanceof Result) return result;
+ if (typeof result == 'object' && result && isPrototypeOf(ResultPrototype, result)) return result;
} return new Result(false);
};