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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 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 69x 1x 61x 1x 38x 38x 4x 4x 38x 60x 14x 7x 37x 2x 14x 2x 2x 1x 13x 13x 13x 54x | import Debug from 'debug';
import { Channel } from './channel/base';
import { CombinedChannel } from './channel/combined';
import { HookContext } from '@feathersjs/feathers';
const debug = Debug('@feathersjs/transport-commons:channels/mixins');
const PUBLISHERS = Symbol('@feathersjs/transport-commons/publishers');
const CHANNELS = Symbol('@feathersjs/transport-commons/channels');
const ALL_EVENTS = Symbol('@feathersjs/transport-commons/all-events');
export const keys = {
PUBLISHERS,
CHANNELS,
ALL_EVENTS
};
export interface ChannelMixin {
[CHANNELS]: { [key: string]: Channel };
channel(...names: string[]): Channel;
}
export function channelMixin() {
const mixin: ChannelMixin = {
[CHANNELS]: {},
channel(...names: string[]): Channel {
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 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 CombinedChannel(channels);
}
};
return mixin;
}
export interface PublishMixin {
[PUBLISHERS]: { [key: string]: Channel };
publish(event: string|symbol, callback: (data: any, hook: HookContext) => Channel): any;
}
export function publishMixin() {
const result: PublishMixin = {
[PUBLISHERS]: {},
publish(event, callback) {
debug('Registering publisher', event);
if (!callback && typeof event === 'function') {
callback = event;
event = ALL_EVENTS;
}
// @ts-ignore
if (this._serviceEvents && event !== ALL_EVENTS && this._serviceEvents.indexOf(event) === -1) {
throw new Error(`'${event.toString()}' is not a valid service event`);
}
const publishers = this[PUBLISHERS];
// @ts-ignore
publishers[event] = callback;
return this;
}
};
return result;
}
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