Convert import() to synchronous

Current versions of Node.js support top-level await behind the flag --harmony-top-level-await (Node >= 13.2) or --experimental-top-level-await (Node >= 14.3). When Node is launched with either of the flags, an import like

import fs from 'fs';

Can be re-written in CommonJS as

const fs = await import('fs');

You can still use require() function by using this babel plugin https://www.npmjs.com/package/babel-plugin-dynamic-import-node-sync

You can use deasync or node-sync to convert anything, including imports, to be synchronous - without blocking the whole node process.

Here is a plugin I wrote to do that: require-esm-in-cjs

Or you can block the entire process and load the package using require('child_process').execSync. This is usually not recommended, but may be OK for compiling a local script, etc.

In addition, CommonJS supports async/await within a function. So in many cases you can do (which is async, but has synchronous function flow)

async function main(){
    let mod = await import('my-module')
        .catch(console.log);
    // do something with mod...
    }
main();

And, if you are using a ESM module, top level await() is now supported.

There is no way to do this currently with commonJS. Until there is some synchronous import() or top-level await, this cannot be done.