PWACompat - the Web App Manifest for all browsers | Blog | Chrome for Developers

You've designed a web app, wrote its code and service worker, and finally added the Web App Manifest to describe how it should behave when 'installed' on a user's device. This includes things like high-resolution icons to use for e.g. a mobile phone's launcher or app switcher, or how your web app should start when opened from the user's home screen. And while many browsers will respect the Web App

[mizdra]

各ブラウザでPWAの挙動の違いを無くすため, Web App Manifestを元にブラウザ独自のmetaタグ等を自動で追加するscript. PWAのPolyfill的な位置づけかな.

[kitokitoki]

“PWACompat: the Web App Manifest for all browsers ”

[efcl]

Web App Manifestから古いSafariやレガシーブラウザ向けにメタ要素を追加するライブラリ。