HTML Imports is not supported in most browsers and not trending that way from what I can tell
A few years ago, I used them extensively and had hoped that they'd become a standard, but they are, in fact, dead. The only major browser that still supports them is Chrome (Opera does, but, well... it's Opera), and they said that support is ending Feb. 2020. And polyfills won't work unless you purposely stay on version 1.x of webcomponents.js, which you shouldn't (github.com/webcomponents/polyfills...).
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
A few years ago, I used them extensively and had hoped that they'd become a standard, but they are, in fact, dead. The only major browser that still supports them is Chrome (Opera does, but, well... it's Opera), and they said that support is ending Feb. 2020. And polyfills won't work unless you purposely stay on version 1.x of webcomponents.js, which you shouldn't (github.com/webcomponents/polyfills...).