4bnode/lib/env.js

4bnode is a CLI-powered backend development platform with a built-in visual dashboard to generate, manage, and test Node.js/Express APIs faster.

import fs from "fs";

export function updateEnvFile(filePath, key, value) {
  const line = `${key}=${value}`;

  if (fs.existsSync(filePath)) {
    let content = fs.readFileSync(filePath, "utf8");
    const regex = new RegExp(`^${key}=.*`, "m");
    if (regex.test(content)) {
      content = content.replace(regex, line);
    } else {
      content = content.trimEnd() + "\n" + line + "\n";
    }
    fs.writeFileSync(filePath, content, "utf8");
  } else {
    fs.writeFileSync(filePath, line + "\n", "utf8");
  }
}