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// This script is meant to be imported by a module worker. It receives a
// message from the worker and responds with the list of imported modules.
const sourcePromise = new Promise(resolve => {
if ('DedicatedWorkerGlobalScope' in self &&
self instanceof DedicatedWorkerGlobalScope) {
self.onmessage = e => {
resolve(e.target);
};
} else if (
'SharedWorkerGlobalScope' in self &&
self instanceof SharedWorkerGlobalScope) {
self.onconnect = e => {
resolve(e.ports[0]);
};
} else if (
'ServiceWorkerGlobalScope' in self &&
self instanceof ServiceWorkerGlobalScope) {
self.onmessage = e => {
resolve(e.source);
};
}
});
const importedModulesPromise =
import('./export-on-load-script.js')
.then(module => module.importedModules)
.catch(error => `Failed to do dynamic import: ${error}`);
Promise.all([sourcePromise, importedModulesPromise]).then(results => {
const [source, importedModules] = results;
source.postMessage(importedModules);
});