only-allow-many/bin.js

Force specific package manager(s) to be used on a project

#!/usr/bin/env node
const whichPMRuns = require("which-pm-runs");

function box(s) {
  const lines = s.trim().split("\n");
  const width = lines.reduce((a, b) => Math.max(a, b.length), 0);
  const surround = (x) => "║   \x1b[0m" + x.padEnd(width) + "\x1b[31m   ║";
  const bar = "═".repeat(width);
  const top = "\x1b[31m╔═══" + bar + "═══╗";
  const pad = surround("");
  const bottom = "╚═══" + bar + "═══╝\x1b[0m";
  return [top, pad, ...lines.map(surround), pad, bottom].join("\n");
}

const argv = process.argv.slice(2);
if (argv.length === 0) {
  console.log(
    "Please specify the wanted package manager: only-allow <npm|cnpm|pnpm|yarn|bun>"
  );
  process.exit(1);
}

const wantedPMs = argv;
wantedPMs.forEach((wantedPM) => {
  if (
    wantedPM !== "npm" &&
    wantedPM !== "cnpm" &&
    wantedPM !== "pnpm" &&
    wantedPM !== "yarn" &&
    wantedPM !== "bun"
  ) {
    console.log(
      `"${wantedPM}" is not a valid package manager. Available package managers are: npm, cnpm, pnpm, yarn or bun.`
    );
    process.exit(1);
  }
});
const usedPM = whichPMRuns();
const cwd = process.env.INIT_CWD || process.cwd();
const isInstalledAsDependency = cwd.includes("node_modules");
if (usedPM && !wantedPMs.includes(usedPM.name) && !isInstalledAsDependency) {
  switch (wantedPMs[0]) {
    case "npm":
      console.log(box('Use "npm install" for installation in this project'));
      break;
    case "cnpm":
      console.log(box('Use "cnpm install" for installation in this project'));
      break;
    case "pnpm":
      console.log(
        box(`Use "pnpm install" for installation in this project.

If you don't have pnpm, install it via "npm i -g pnpm".
For more details, go to https://pnpm.js.org/`)
      );
      break;
    case "yarn":
      console.log(
        box(`Use "yarn" for installation in this project.

If you don't have Yarn, install it via "npm i -g yarn".
For more details, go to https://yarnpkg.com/`))
      break

    case "bun":
      console.log(
        box(`Use "bun install" for installation in this project.

If you don't have Bun, go to https://bun.sh/docs/installation and find installation method that suits your environment".`))
      break
  }
  process.exit(1);
}