Promise snippets I put together, to share with coworkers.

try-catch-promise-examples.js

// ============
// Helper: log.
// ============

const log = (error) => {
    console.log(error?.message || error);
}

// ===============
// Promise reject.
// ===============

Promise.reject('REJECT').catch(log);

// ======================
// Promise reject: await.
// ======================

try {
    await Promise.all([
        Promise.reject('REJECT'),
        Promise.resolve('RESOLVE')
    ]);
} catch (error) {
    log(error);
}

// =============
// Fetch reject.
// =============

fetch('https://localhost').catch(log);

// ====================
// Fetch reject: await.
// ====================

try {
    await fetch('https://localhost');
} catch (error) {
    log(error);
}

// =============================
// Short circuit following code.
// =============================

(async () => {
    log('BEFORE');

    try {
        await Promise.reject('REJECT');

        // Never logged.
        log('AFTER');
    } catch (error) {
        log(error);
    }
})();