HMR proxy module

proxy.mjs

// 1
import { export1, export2 } from './original.mjs?mtime=0';
import { hmrClient } from '/hmrClient.mjs';

// 2
let export1Proxy = export1;
let export2Proxy = export2;

// 3
export {
   export1Proxy as export1,
   export2Proxy as export2
};

// 4
hmrClient.onUpdate('original.mjs', (newMtime) => {
    // 5
    import(`./original.mjs?mtime=${newMtime}`)
        .then(newExports => {
            // 6
            export1Proxy = newExports.export1;
            export2Proxy = newExports.export2;
        })
})