dguo

const twilio = require("twilio")(
    process.env.TWILIO_ACCOUNT_SID,
    process.env.TWILIO_AUTH_TOKEN
);

async function sendText(body, mediaUrl) {
    const text = await twilio.messages.create({
        body,
        mediaUrl: mediaUrl ? [mediaUrl] : [],
        from: process.env.TWILIO_PHONE_NUMBER,

dguo

const got = require("got");

async function getAwwPost() {
    const response = await got(
        "https://www.reddit.com/r/aww/top.json?t=day"
    ).json();

    for (const post of response.data.children) {
        if (post.data.post_hint !== "image") {
            continue;

dguo

hyperfine 'lua slow.lua'
# Benchmark #1: lua slow.lua
#   Time (mean ± σ):      1.287 s ±  0.115 s    [User: 1.120 s, System: 0.078 s]
#   Range (min … max):    1.187 s …  1.528 s    10 runs
hyperfine 'lua fast.lua'
# Benchmark #1: lua fast.lua
#   Time (mean ± σ):      39.3 ms ±   3.8 ms    [User: 34.6 ms, System: 2.8 ms]
#   Range (min … max):    35.3 ms …  58.3 ms    48 runs

dguo

class DatabaseError extends Error {}

const error = new DatabaseError("Unique constraint violation");

// prints "true"
console.log(error instanceof Error);
// incorrectly prints "false"
console.log(error instanceof DatabaseError);