PromiseCource(x) should return "not a thenable" if Type(x) is not Object
even if x.then exists.
BUG=347095
LOG=Y
R=rossberg@chromium.org
Review URL: https://codereview.chromium.org/
194403002
Patch from Yutaka Hirano <yhirano@chromium.org>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19788
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00
PromiseCoerce.table = new $WeakMap;
function PromiseCoerce(constructor, x) {
- if (!(IsPromise(x) || IS_NULL_OR_UNDEFINED(x))) {
+ if (!IsPromise(x) && IS_SPEC_OBJECT(x)) {
var then = x.then;
if (typeof then === 'function') {
if (PromiseCoerce.table.has(x)) {