lazy-methods-throw-on-reentry.js

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// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator'))

async function* gen(x) { yield x; }

const methods = ['map', 'filter', 'flatMap'];

for (const method of methods) {

  const iter = gen('value');

  const iterHelper = iter[method](x => iterHelper.next());

  iterHelper.next().then(

    _ => assertEq(true, false, 'Expected reject.'),

    err => assertEq(err instanceof TypeError, true),

);

if (typeof reportCompare == 'function')

  reportCompare(0, 0);