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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | 13x 13x 13x 13x 212x 211x 9x 212x 210x 16x 210x 198x 4x 212x 211x 210x 210x 210x 210x 212x 212x 212x | import { Idempotent } from "@jonloucks/contracts-ts/auxiliary/Idempotent";
import { CONTRACT as IDEMPOTENT_FACTORY } from "@jonloucks/contracts-ts/auxiliary/IdempotentFactory";
import { AutoClose, inlineAutoClose } from "@jonloucks/contracts-ts/api/AutoClose";
import { RequiredType } from "@jonloucks/contracts-ts/api/Types";
import { configCheck, contractsCheck, presentCheck } from "@jonloucks/contracts-ts/auxiliary/Checks";
import { Config, Events } from "./Events";
import { Contracts } from "@jonloucks/contracts-ts";
export { Config, Events };
/**
* Factory method to create Events instance.
*
* @param config the configuration for the Events implementation
* @returns the new Events implementation
*/
export function create(config?: Config): RequiredType<Events> {
return EventsImpl.internalCreate(config);
}
// ---- Implementation details below ----
/**
* The Events implementation
*/
class EventsImpl implements Events {
open(): AutoClose {
return this.#idempotent.open();
}
isOpen(): boolean {
return this.#idempotent.getState() === 'OPENED'
}
static internalCreate(config?: Config): RequiredType<Events> {
return new EventsImpl(config);
}
private firstOpen(): AutoClose {
this.#names.forEach(name => {
process.on(name, this.#callback);
});
return inlineAutoClose(() => {
this.#names.forEach(name => {
process.off(name, this.#callback);
});
});
}
private constructor(config?: Config) {
const validConfig = configCheck(config);
this.#callback = presentCheck(validConfig?.callback, "Callback must be present.");
this.#names = validConfig?.names ?? [];
const contracts : Contracts = contractsCheck(validConfig.contracts);
this.#idempotent = contracts.enforce(IDEMPOTENT_FACTORY).createIdempotent({
open: () => this.firstOpen()
});
}
readonly #names: string[];
readonly #callback: (...args: unknown[]) => void;
readonly #idempotent: Idempotent;
}
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