@feathersjs/transport-commons
Version:
Shared functionality for websocket providers
72 lines • 2.78 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.keys = void 0;
exports.channelMixin = channelMixin;
exports.publishMixin = publishMixin;
/* eslint-disable @typescript-eslint/no-unnecessary-type-assertion */
const feathers_1 = require("@feathersjs/feathers");
const commons_1 = require("@feathersjs/commons");
const base_1 = require("./channel/base");
const combined_1 = require("./channel/combined");
const debug = (0, commons_1.createDebug)('@feathersjs/transport-commons/channels/mixins');
const PUBLISHERS = Symbol.for('@feathersjs/transport-commons/publishers');
const CHANNELS = Symbol.for('@feathersjs/transport-commons/channels');
const ALL_EVENTS = Symbol.for('@feathersjs/transport-commons/all-events');
exports.keys = {
PUBLISHERS: PUBLISHERS,
CHANNELS: CHANNELS,
ALL_EVENTS: ALL_EVENTS
};
function channelMixin() {
const mixin = {
[CHANNELS]: {},
channel(...names) {
debug('Returning channels', names);
if (names.length === 0) {
throw new Error('app.channel needs at least one channel name');
}
if (names.length === 1) {
const [name] = names;
if (Array.isArray(name)) {
return this.channel(...name);
}
if (!this[CHANNELS][name]) {
const channel = new base_1.Channel();
channel.once('empty', () => {
channel.removeAllListeners();
delete this[CHANNELS][name];
});
this[CHANNELS][name] = channel;
}
return this[CHANNELS][name];
}
const channels = names.map((name) => this.channel(name));
return new combined_1.CombinedChannel(channels);
}
};
return mixin;
}
function publishMixin() {
const result = {
[PUBLISHERS]: {},
publish(...args) {
return this.registerPublisher(...args);
},
registerPublisher(event, publisher) {
debug('Registering publisher', event);
if (!publisher && typeof event === 'function') {
publisher = event;
event = ALL_EVENTS;
}
const { serviceEvents = feathers_1.defaultServiceEvents } = (0, feathers_1.getServiceOptions)(this) || {};
if (event !== ALL_EVENTS && !serviceEvents.includes(event)) {
throw new Error(`'${event.toString()}' is not a valid service event`);
}
const publishers = this[PUBLISHERS];
publishers[event] = publisher;
return this;
}
};
return result;
}
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