env-validate/src/find-template-path.js

Validates your environment variables are set at runtime.

const fs = require('fs');
const path = require('path');

const MAX_LEVELS = 10;

const ERROR_MESSAGE_MAX_LEVELS = `No '.env.template' file could be found in one of ${MAX_LEVELS} direct levels above the currrent folder. Please consider passing the absolute path of your template file as argument.`;

const findTemplatePath = (dirPath = __dirname, currentLevel = 0) => {
  if (currentLevel >= MAX_LEVELS) throw ERROR_MESSAGE_MAX_LEVELS;

  const filePath = `${dirPath}.env.template`;

  return fs.existsSync(filePath) ? filePath : findTemplatePath(path.join(dirPath, '../'), currentLevel + 1);
};

module.exports = findTemplatePath;