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refactor(service-worker): notify clients about updates in parallel (#40234) 

Previously, clients were notified about updates sequentially. This
wasn't necessary.

This commit changes the `Driver#notifyClientsAboutUpdate()` method to
notify the clients in parallel (by switching from `Array#reduce()` to
`Array#map()` and `Promise.all()`).

This also aligns the `notifyClientsAboutUpdate()` method with the
`notifyClientsAboutUnrecoverableState()` method.

PR Close #40234
This commit is contained in:
George Kalpakas 2021-01-08 13:59:34 +02:00 committed by atscott
parent ad3329a78b
commit b953a0c5a5
1 changed files with 2 additions and 4 deletions
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6
packages/service-worker/worker/src/driver.ts
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@ -1037,9 +1037,7 @@ export class Driver implements Debuggable, UpdateSource {
const clients = await this.scope.clients.matchAll();
await clients.reduce(async (previous, client) => {
await previous;
await Promise.all(clients.map(async client => {
// Firstly, determine which version this client is on.
const version = this.clientVersionMap.get(client.id);
if (version === undefined) {
@ -1062,7 +1060,7 @@ export class Driver implements Debuggable, UpdateSource {
};
client.postMessage(notice);
}, Promise.resolve());
}));
}
async broadcast(msg: Object): Promise<void> {