ECMAScript 2022 approved
ecma-international.org3 ポイント投稿者 FrontAid1 コメント
0: The user prefers to allow tracking on the target site.
1: The user prefers not to be tracked on the target site.
null: The user has not specified a preference about tracking.
Source: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/DN... var name = true;
typeof name; // "string", not "boolean"
Luckily, this is not true within ES modules which you probably use most of the time anymway.
https://frontaid.ch/web/ui/libraries.html