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Function: processableFamily()

processableFamily<TInput, TNode>(build, options?): Family<TInput, TNode>

Defined in: packages/core/src/family.ts:256

Declare a family of Processables: one build function, members instantiated lazily and memoized per member key.

The build function receives the input plus the member's identity, so a composite can label itself the way a bot member does.

Give a key whenever the input is a whole domain object. Keying on the object itself works only while every field is JSON-faithful, costs a full serialisation per call, and makes two tickets that differ in a timestamp two members. The id it belongs to is the thing that identifies it.

Type Parameters​

TInput​

TInput

TNode​

TNode extends Processable<unknown, unknown>

Parameters​

build​

(input, identity) => TNode

options?​

FamilyOptions<TInput>

Returns​

Family<TInput, TNode>

Example​

const reviewFor = processableFamily(
  (ticket: Ticket) => pipeline(triage, assign, notify),
  { name: 'review', key: (ticket) => ticket.id },
);
const a = reviewFor(ticket);
reviewFor(ticket) === a; // memoized