// META: title=Cookie Store API: cookieStore.delete() return type // META: global=window,serviceworker 'use strict'; promise_test(async testCase => { const p = cookieStore.delete('cookie-name'); assert_true(p instanceof Promise, 'cookieStore.delete() returns a promise'); const result = await p; assert_equals(result, undefined, 'cookieStore.delete() promise resolves to undefined'); }, 'cookieStore.delete return type is Promise');