Safari can't load web assembly in dev

[ianpurvis]

Describe the bug

The dev server version of Vite's wasm helper does not work in Safari due to undefined WebAssembly.instantiateStreaming

[Error] Unhandled Promise Rejection: TypeError: WebAssembly.instantiateStreaming is not a function. (In 'WebAssembly.instantiateStreaming(fetch("/wasm/simple.wasm"), opts)', 'WebAssembly.instantiateStreaming' is undefined)
	(anonymous function) (simple.wasm:2)
	promiseReactionJob

Reproduction

Run the playground and view the test page in Safari to see the error in the browser console.

$ cd playground
$ yarn install
$ npx vite

System Info

• vite version: 0d2768d (master)
• Operating System: macOS 11.0.1
• Node version: v14.15.0

[ianpurvis]

Fixed in #1144

[remorses]

a better solution to this would be to use a polyfill like https://www.npmjs.com/package/wasm-instantiate-streaming (if we want to support safari)

[ianpurvis]

@remorses Thanks for checking it out. That ponyfill repo seems to have been deprecated? Anyways, seems kind of heavy for this...