@goparrot/pubsub-event-bus/esm/utils/helpers.js

NestJS EventBus extension for RabbitMQ PubSub

import snakeCase from 'lodash/snakeCase';
import startCase from 'lodash/startCase';
import last from 'lodash/last';
import { ORIGIN_EXCHANGE_HEADER } from './retry-constants';
export function toEventName(className) {
    return snakeCase(className.replace(/Event$/, '')).replace(/_/gi, '.');
}
export function toEventClassName(event) {
    return event.split('.').map(startCase).join('');
}
export function toSnakeCase(className) {
    if (typeof className === 'object') {
        className = className.constructor.name;
    }
    return snakeCase(className.toString().replace(/Handler$/, ''));
}
export function calculateDelay(delay, retryCount) {
    return typeof delay === 'function' ? delay(retryCount) : delay;
}
export function generateQueuePrefixFromPackageName() {
    return last(process.env.npm_package_name?.split('/'))?.replace(/[_-]/gi, '.');
}
export function getMessageExchange(message) {
    return message.properties.headers?.[ORIGIN_EXCHANGE_HEADER] ?? message.fields.exchange;
}
export function appInTestingMode() {
    return process.env.NODE_ENV === 'test';
}
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