Demo of 'await Promise.all' vs sequential await - https://www.typescriptlang.org/play?#code/IYZwngdgxgBAZgV2gFwJYHsIwA4Cd0C2qIApgIIA2FAFAJQwDeAUDKzFJiMjACbDIkYAXhgQSAdxgARfiToBuFm2DjgqbgAV8RUgDpgVagG0lbNmMlbCxOdVwkQ6CgDcS9IQD5GpszFLIAFVQCEnQEZDsHJ1cAGhgAJgAGZNpFXzYAX1oYnzMLGCsdW3tHFzdhL2Z09P8gkLCIkuiSOKSUtOqsgF0fVJ8OCFKSXQp0AHNqAAMDChhkdHQAaxgAE…

await-promiseall-vs-sequential.ts

// https://www.typescriptlang.org/play?#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

async function promiseAll() {
    const date = new Date();
    await Promise.all([
        new Promise((resolve) => {
        setTimeout(resolve, 2000);
        }),
        new Promise((resolve) => {
            setTimeout(resolve, 2000);
        })]
    );
    console.log(`all took ${new Date().valueOf() - date.valueOf()}ms`)

}

async function sequential() {
    const date = new Date();
    await new Promise((resolve) => {
        setTimeout(resolve, 2000);
    });
    await new Promise((resolve) => {
        setTimeout(resolve, 2000);
    });
    console.log(`serial took ${new Date().valueOf() - date.valueOf()}ms`)
}

(async () => {
    await promiseAll();
    await sequential();
})();