esnext.iterator.some.js 543 B

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  1. 'use strict';
  2. // https://github.com/tc39/proposal-iterator-helpers
  3. var $ = require('../internals/export');
  4. var iterate = require('../internals/iterate');
  5. var aCallable = require('../internals/a-callable');
  6. var anObject = require('../internals/an-object');
  7. $({ target: 'Iterator', proto: true, real: true, forced: true }, {
  8. some: function some(fn) {
  9. anObject(this);
  10. aCallable(fn);
  11. return iterate(this, function (value, stop) {
  12. if (fn(value)) return stop();
  13. }, { IS_ITERATOR: true, INTERRUPTED: true }).stopped;
  14. }
  15. });