Issue #1283 - Implement Promise.prototype.finally()

This resolves #1283.

1 files changed, 8 insertions, 0 deletions

diff --git a/js/src/builtin/Promise.cpp b/js/src/builtin/Promise.cpp
index ec7845e89d..1d068f8c64 100644
--- a/js/src/builtin/Promise.cpp
+++ b/js/src/builtin/Promise.cpp
@@ -2006,6 +2006,13 @@ CommonStaticResolveRejectImpl(JSContext* cx, HandleValue thisVal, HandleValue ar
     return promise;
 }
 
+MOZ_MUST_USE JSObject*
+js::PromiseResolve(JSContext* cx, HandleObject constructor, HandleValue value)
+{
+    RootedValue C(cx, ObjectValue(*constructor));
+    return CommonStaticResolveRejectImpl(cx, C, value, ResolveMode);
+}
+
 /**
  * ES2016, 25.4.4.4, Promise.reject.
  */
@@ -2739,6 +2746,7 @@ CreatePromisePrototype(JSContext* cx, JSProtoKey key)
 static const JSFunctionSpec promise_methods[] = {
     JS_SELF_HOSTED_FN("catch", "Promise_catch", 1, 0),
     JS_FN("then", Promise_then, 2, 0),
+    JS_SELF_HOSTED_FN("finally", "Promise_finally", 1, 0),
     JS_FS_END
 };