test-repo/scripts/check-deps.mjs

import fs from "node:fs/promises";
import chalk from "chalk";

const packageJson = JSON.parse(
  await fs.readFile(new URL("../package.json", import.meta.url))
);

validateDependencyObject(packageJson.dependencies);
validateDependencyObject(packageJson.devDependencies);

function validateDependencyObject(object) {
  for (const key of Object.keys(object)) {
    if (object[key][0] === "^" || object[key][0] === "~") {
      console.error(
        chalk.red("error"),
        `Dependency "${chalk.bold.red(key)}" should be pinned.`
      );
      process.exitCode = 1;
    }
  }
}