Creates a new constant converter.
The path to the constant representation.
The content type of the constant representation.
Extra options for the converter.
Checks whether the input can be handled by this class. If it cannot handle the input, rejects with an error explaining why.
Input that could potentially be handled.
A promise resolving if the input can be handled, rejecting with an Error if not.
Handles the given input. This may only be called if canHandle did not reject. When unconditionally calling both in sequence, consider handleSafe instead.
Input that needs to be handled.
A promise resolving when handling is finished.
Helper function that first runs canHandle followed by handle. Throws the error of canHandle if the data cannot be handled, or returns the result of handle otherwise.
Input data that will be handled if it can be handled.
A promise resolving if the input can be handled, rejecting with an Error if not.
A RepresentationConverter that ensures a representation for a certain content type is available.
Representations of the same content type are served as is; others are replaced by a constant document.
This can for example be used to serve an index.html file, which could then interactively load another representation.
Options default to the most permissive values when not defined.