1860083 - WebIDL bindings code to convert a WebIDL Promise should create a new Promise and resolve it instead of calling Promise::Resolve

Status: ASSIGNED

(Core :: DOM: Bindings (WebIDL), defect, P3)

Description

[Peter Van der Beken [:peterv]]

The spec says to do:

1. Let promiseCapability be ? NewPromiseCapability(%Promise%).
2. Perform ? Call(promiseCapability.[[Resolve]], undefined, « V »).
3. Return promiseCapability.

The generated binding code calls Promise::Resolve, which is the equivalent of ECMAScript's Promise.resolve. There are subtle differences between the two, because calling Promise.resolve with a promise as its argument will just return the existing promise.