What browsers does snap try to support?

i remember hearing that snap supports old browsers, but what browsers does it try to support?

I've been trying hard for a long time to support legacy browsers, even IE, but given up on it lately (well, for quite a while already). Now I'm basically trying hard to make Snap - mostly - work on most modern browsers. The most important ones currently seem to be Chromium based, i.e. Chrome and Edge. Safari, mobile Safari on iPad and Firefox are also having many users in our community. Some other flavors of Chrome have some followers, especially on ChromeOS, Brave, Opera etc. Myself, I'm mostly testing on Chrome, Safari and Firefox.