Function envBoolean

apps/sim/lib/core/config/env.ts:633–638

(value: boolean | string | undefined | null)

 * the meaning of `MY_FLAG=false`.
 */
export function envBoolean(value: boolean | string | undefined | null): boolean | undefined {
  if (typeof value === 'boolean') return value
  if (value === undefined || value === null || value === '') return undefined
  const normalized = String(value).trim().toLowerCase()
  return normalized === 'true' || normalized === '1' || normalized === 'yes' || normalized === 'on'
}