toMapDataParser

The toMapDataParser() function converts a Clean handler (NewType, constraint, primitive, or entity property definition) into a DataParser. The resulting parser maps parsed input into a typed object while preserving business kinds (newTypeKind, constrainedTypeKind) when available.

Interactive example

Syntax

Classic signature

function toMapDataParser(
	input: ConstraintHandler | ConstraintsSetHandler | PrimitiveHandler | EntityPropertyDefinition,
	params?: { coerce?: boolean }
): DDataParser.Contract<MappedValue, unknown>

Parameters

• input: Clean handler to convert (NewType, constraint, constraints set, primitive, or entity property definition).
• params: Conversion options.
• params.coerce: Enables coercion on compatible parsers (string, number, boolean, date, time, etc.).

Return value

A DDataParser.Contract that:

• parses unknown input,
• maps output into a typed object ready for domain usage,
• preserves business type markers when present.

See also

• constraints
• castConstraint
• newType
• entity