Determines whether the given conversion request is supported, given the available content type conversions:
Matches all inputs to all outputs.
Handles the given input. This may only be called if canHandle did not reject. When unconditionally calling both in sequence, consider handleSafe instead.
A promise resolving when handling is finished.
Input that needs to be handled.
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.
A promise resolving if the input can be handled, rejecting with an Error if not.
Input data that will be handled if it can be handled.
Converts an Error object to JSON by copying its fields.