Abstract
Creates a new UnionHandler
.
When requireAll
is false or ignoreErrors
is true,
the length of the input to combine
can vary;
otherwise, it is exactly the number of handlers.
The handlers whose output is to be combined.
If true, will fail if any of the handlers do not support the input. If false, only the handlers that support the input will be called; will fail only if none of the handlers can handle the input.
If true, ignores handlers that fail by omitting their output; if false, fails when any handlers fail.
Protected
Readonly
handlersPrivate
Readonly
ignorePrivate
Readonly
requireProtected
allChecks if the input can be handled by this class. If it cannot handle the input, rejects with an error explaining why.
A promise resolving if the input can be handled, rejecting with an Error if not.
Input that could potentially be handled.
Protected
Abstract
combineHandles 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.
Utility handler that allows combining the results of multiple handlers into one. Will run the handlers and then call the abstract
combine
function with the results, which then generates the handler's output.