Sapper IE
IE and Windows Edge barely qualify as browsers, but they are able to render HTML/CSS and execute JS, in a form. These modifications to the language help incapable browsers render websites.
Status:
It Works!
- IE11 - Fully working
- Edge - Fully working
Changes from default Sapper
- Polyfils in template.html (via Polyfill.io):
- default
- fetch
- Array.prototype.find
- Object.values (not strictly necessary - but useful)
- Non-legacy (regular build) has rest spread so that Edge works (wow)
!legacy && babel({
extensions: ['.js', '.mjs', '.html', '.svelte'],
exclude: ['node_modules/@babel/**'],
plugins: [
'@babel/plugin-syntax-dynamic-import',
'@babel/plugin-proposal-object-rest-spread'
]
}),
- Special run mode to run the app via bable for easy local testing
npm run build:dev
Running
Don't expect this to work in IE/Edge in dev mode.
npm run build # has shimport hack for easier debugging
node __sapper__/build