[1] Define AbortController and AbortSignal classes (jakearchibald著, 2017-07-14 22:59:09 +09:00) <https://github.com/whatwg/dom/commit/1c58d2cf4279ade63f1c5c7d200156cfdda89b7c>

[2] Abortable fetch (jakearchibald著, 2017-09-20 21:59:57 +09:00) <https://github.com/whatwg/fetch/commit/0bcd5dfc71ef44319873887f4b83119bd6d0b71d>