License is ISC?

[WofWca]

Hey! package.json says the license is ISC

twitter-video-downloader-extension/package.json

Line 14 in 4d993ff

"license": "ISC",

however, this is the default license that it assigns when you npm init, and I saw no more mentions of the license used for this software.
I just want to make sure that you really intend to apply ISC to this software so everyone is free to copy/read/modify/distribute it, and it's not just a mistake and you want to reserve all rights.

[WofWca]

On this matter, would you consider applying GPL or AGPL license to it instead? Those are copyleft licenses, in comparison to ISC.

FSF has a good article on choosing a license, and they recommend GPL for this kind of software.