feat(plugin-legacy): add protocol to support file protocol #1189

[ariesjia]

Fix #1189

[L-Chris]

I need this PR, too.
But it should not just replace code in the output html. Need a better implementation to do it?

[ariesjia]

@L-Chris replace code is for remove the ESM script entry, file protocol not support ESM due to cross origin request.

[shadow-light]

I also need this, but it's for electron so I don't need all the other aspects of plugin-legacy. I got a build that's compatible with the file protocol with the following config:

return {
    base: './',
    plugins: [
        plugin_iife(),
    ],
    build: {
        rollupOptions: {
            output: {
                format: 'iife',  // Make whole module self-executing fn rather than real module
                manualChunks: () => 'everything.js',  // Hack to force all imports into one file
            },
        },
    },
}

And created the following plugin to stop the browser treating the script like a module:

export default function(){

    return {
        name: 'iife',
        apply: 'build',
        enforce: 'post',

        transformIndexHtml(html){
            return html.replace(' type="module" crossorigin ', ' ')
        }
    }
}

[koenoe]

What's blocking this PR from getting merged? File protocol support would be super useful, i.e. for Tizen Web applications.

[Sovai]

I can't use vite on my project because of this issue. Please why this PR cannot be merged?

[Mileber]

Recieved, thanks.收到邮件啦~谢谢！

[Mileber]

Recieved, thanks.收到邮件啦~谢谢！