void checkNotNegative(
int value,
[String name,
String message]
)

Check that an integer value isn't negative.

Throws if the value is negative.

Source

/**
 * Check that an integer value isn't negative.
 *
 * Throws if the value is negative.
 */
static void checkNotNegative(int value, [String name, String message]) {
  if (value < 0) throw new RangeError.range(value, 0, null, name, message);
}