@jsse/quick-maths/src/cli.ts

quick-maths

import process from "node:process";
import { version } from "../package.json";
import { quickmaths } from "./quick-maths.js";

function isDebug() {
  const _debugEnvStr = (process.env["DEBUG"] ?? "false").toLowerCase();
  // is not debug
  /* v8 ignore start */
  const isNotDebug =
    _debugEnvStr === "false" || _debugEnvStr === "f" || _debugEnvStr === "0";
  /* v8 ignore stop */
  return (
    !isNotDebug || !process.argv.some((arg) => arg.toLowerCase() === "--debug")
  );
}

function isTest() {
  return process.env["NODE_ENV"] === "test";
}

// eslint-disable-next-line @typescript-eslint/no-empty-function,@typescript-eslint/no-explicit-any
function noop(..._args: any[]) {}

/* v8 ignore start */
const debug =
  isDebug() && !isTest()
    ? // eslint-disable-next-line @typescript-eslint/no-unsafe-argument,@typescript-eslint/no-explicit-any
      (...args: any[]) => console.log(...args)
    : noop;
const echo = isTest() ? noop : console.log;
/* v8 ignore stop */

export async function cli(args?: string[]) {
  const argv = args || [];
  if (debug) {
    debug("Debugging enabled");
  }
  if (argv.includes("--help") || argv.includes("-h")) {
    echo("Usage: quick-maths");
    return;
  }
  if (argv.includes("--version") || argv.includes("-v")) {
    echo(`quick-maths v${version}`);
    return;
  }

  // perform quick maths
  const ti = Date.now();
  const result = quickmaths();
  const tf = Date.now();
  echo(
    `2 plus 2 that's 4 minus 1 that's ${result} quick maths! (${tf - ti}ms)`,
  );
}

/* v8 ignore start */
async function main(args?: string[]) {
  const argv = args || process.argv.slice(2);
  await cli(argv);
}

if (process.env["NODE_ENV"] !== "test") {
  main()
    .catch((e) => {
      console.error(e);
      process.exit(1);
    })
    .finally(() => {
      process.exit(0);
    });
}
/* v8 ignore stop */