* Returns an [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601#Durations) compliant string, for example P0Y0M0DT0H9M0S. * * Also available as toISO toISO for backwards compatibility. * * ```js * var parse = require('postgres-interval') * var interval = parse('01
()
| 49 | * ``` |
| 50 | */ |
| 51 | toISOString(): string; |
| 52 | /** |
| 53 | * Returns an [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601#Durations) compliant string shortened to minimum length, for example `PT9M`. |
| 54 | * |