[1] Define messageerror (annevk著, 2017-04-13 20:36:23 +09:00) <https://github.com/whatwg/html/commit/25a94f606e983534a863a0559d65bd29bb940a02>

[2] The WHATWG Blog — HTML and shared memory (2017-05-02 09:04:42 +09:00) <https://blog.whatwg.org/html-and-shared-memory>