snatalenko / node-cqrs / 10223224402

coverage: 96.856%. First build
10223224402

Pull #21

github

snatalenko 
Delete travis config
Pull Request #21: Migrate to TypeScript

570 of 859 branches covered (66.36%)

2282 of 2360 new or added lines in 28 files covered. (96.69%)

2403 of 2481 relevant lines covered (96.86%)

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65.12
/src/Event.ts
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import { IEvent } from "./interfaces";
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import * as crypto from 'crypto';
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const md5 = (data: object): string => crypto




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        .createHash('md5')




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        .update(JSON.stringify(data))




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        .digest('hex')




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        .replace(/==$/, '');




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/**




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 * Get text description of an event for logging purposes




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 */




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export function describe(event: IEvent): string {




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        return `'${event.type}' of ${event.aggregateId} (v${event.aggregateVersion})`;




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}




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/**




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 * Get text description of a set of events for logging purposes




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 */




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export function describeMultiple(events: ReadonlyArray<IEvent>): string {




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        if (events.length === 1)




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                return describe(events[0]);




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        return `${events.length} events`;




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}




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/**




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 * Validate event structure




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 */




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export function validate(event: IEvent) {





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        if (typeof event !== 'object' || !event)




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                throw new TypeError('event must be an Object');





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        if (typeof event.type !== 'string' || !event.type.length)




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                throw new TypeError('event.type must be a non-empty String');





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        if (!event.aggregateId && !event.sagaId)





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                throw new TypeError('either event.aggregateId or event.sagaId is required');





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        if (event.sagaId && typeof event.sagaVersion === 'undefined')





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                throw new TypeError('event.sagaVersion is required, when event.sagaId is defined');





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}




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export function getId(event: IEvent): string {




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        return event.id ?? md5(event);




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}




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