@theholocron/misc-utils

Miscellaneous utilities.

Installation

pnpm add @theholocron/misc-utils

Usage

errorMessage(err)

Stringifies a caught value for display — err.message for a real Error, String(err) for anything else. catch blocks only ever get unknown in TypeScript; this is the one line nearly every one of them needs.

import { errorMessage } from "@theholocron/misc-utils";

try {
  doSomething();
} catch (err) {
  console.error(errorMessage(err));
}

Konami code detector

import { konami } from "@theholocron/misc-utils";

// The classic sequence: ↑ ↑ ↓ ↓ ← → ← → B A
console.log(konami.CODE);
// ["ArrowUp", "ArrowUp", "ArrowDown", "ArrowDown",
//  "ArrowLeft", "ArrowRight", "ArrowLeft", "ArrowRight", "KeyB", "KeyA"]

window.addEventListener("keydown", (event) => {
  if (konami.is(event)) {
    console.log("Konami code entered!");
  }
});

konami.is(event)

Checks whether the given KeyboardEvent continues the Konami code sequence. Returns true when the full sequence is completed; resets the internal index on any incorrect key.

konami.CODE

The Konami code sequence as a readonly TKonamiCode[].

Documentation

Check out The Holocron Archive for more information.