pipe

DDataParser.pipe(input, output) composes two parsers: the first validates/transforms the input, then its result is passed to the second. Handy to chain coercion → strict validation → transformation without writing manual logic.

Interactive example

Parameters

• input: first parser executed on the input.
• output: parser executed on the output of input.
• checkers: checkerRefine or other helpers applied on Output<output>.
• errorMessage: generic message if the pipeline fails.

Return value

A DataParserPipe. schema.parse(data) runs input, then output if input succeeded. On failure, you receive DEither.error<DataParserError> with a path and trace consistent with the faulty stage.

Other examples

Extended mode

In extended mode (DPE), pipe also exists as a method: DPE.someParser().pipe(otherParser).
It is a wrapper around DPE.pipe(self, otherParser) exposed by scripts/dataParser/baseExtended.ts.

See also

• transform - Transform a value after validating an inner
• coerce.* - Normalize data before strict validation