friday-yet

Enterprise-grade certainty for the most important business question.

Why this exists

Because new Date().getDay() === 5 was clearly too simple, too fast, and too maintainable.

Installation

npm install friday-yet

API

import { isFriday, isFridayAsync } from "friday-yet";

isFriday();
isFriday(new Date());
isFriday({ timezone: "America/New_York", mode: "emoji" });

await isFridayAsync({ mode: "sarcastic" });

Options

• date?: Date
• timezone?: string (IANA, e.g. Asia/Kolkata)
• mode?: "boolean" | "string" | "emoji" | "sarcastic"

Output modes

• boolean -> true | false
• string -> "Yes" | "No"
• emoji -> "🎉" | "😞"
• sarcastic -> "Sure, it is Friday. Act surprised." | "Unfortunately, no."

CLI

npx friday-yet
npx friday-yet --mode emoji
npx friday-yet --timezone Asia/Kolkata --mode sarcastic
npx friday-yet --help

Examples

isFriday({ mode: "emoji" }); // "🎉" or "😞"
isFriday({ mode: "sarcastic" }); // brutally honest output
isFriday({ date: new Date("2026-03-06T12:00:00Z") }); // true

Testing

npm test

Covers:

• all weekdays
• timezone correctness
• midnight boundary behavior
• fake system date tests
• CLI parser and output paths

Benchmark

npm run benchmark

Publish instructions

1. npm version patch|minor|major
2. npm run prepublishOnly
3. npm publish --access public

Meme section

"Move fast and ask if it's Friday."

License

MIT