Function getEnvBool

src/envars.ts:489–498

(key: EnvVarKey, defaultValue?: boolean)

 * @returns The boolean value of the environment variable, or the default value if provided.
 */
export function getEnvBool(key: EnvVarKey, defaultValue?: boolean): boolean {
  const value = getEnvString(key) || defaultValue;
  if (typeof value === 'boolean') {
    return value;
  }
  if (typeof value === 'string') {
    return ['1', 'true', 'yes', 'yup', 'yeppers'].includes(value.toLowerCase());
  }
  return Boolean(defaultValue);
}

/**
 * Get an integer environment variable.