text: class EnvVarError extends TypeError {
    constructor(key, value) {
      super(`
        When reading an environement variable "${key}" (as \`process.env.${key}\`):
        it was expected to find a valid string, but found \`${value}\`.
        Have you followed the instructions in Developer's guide?
        There might have been additions to the list of environement variables required.
        Verify that your \`.env\` file has all the variables present in \`.env.example\`:
          diff --color .env.example .env
        In simple cases you might just copy the example:
          cp .env.example .env
        `);
    }
  }
  
  module.exports = EnvVarError;
  