escover/lib/register.js

Coverage for EcmaScript Modules

import {register} from 'node:module';
import {MessageChannel} from 'node:worker_threads';

const {port1, port2} = new MessageChannel();

initialize({
    port: port1,
});

register('./escover.js', import.meta.url, {
    parentURL: import.meta.url,
    data: {
        port: port2,
    },
    transferList: [port2],
});

function initialize({port}) {
    const loader = 'escover';
    
    global.__createC4 = (url) => ({
        '🧨': (line, column) => {
            port.postMessage({
                type: 'set',
                url,
                line,
                column,
                loader,
            });
        },
        'init': (line, column) => {
            port.postMessage({
                type: 'init',
                url,
                line,
                column,
                loader,
            });
        },
    });
}