CID 1

export class CorrelationId {
    private _nextChildId = 0;
    constructor(public readonly origin: string) {}
    nextLevel(): CorrelationId {
        const next = this.clone(this.toString());
        this._nextChildId++;
        return next;
    }

    protected clone(newCorrelationId: string): CorrelationId {
        return new CorrelationId(newCorrelationId);
    }

    toString(): string {
        return this.origin + '.' + this._nextChildId
    }
}

const getCId = (rq) => rq.correlationId; 
const getNestedCId = (rq) => rq.correlationId.nextLevel(); 

const m1 = (cId, rq) => {
    console.log(cId.toString());
}

const m2 = (cId, rq) => {
    console.log(cId.toString());
    m1(getNestedCId(rq), rq);
}

const m3 = (cId, rq) => {
    console.log(cId.toString());
}

const request = { 
   correlationId: new CorrelationId('x')
}

m2(getCId(request), request);
m3(getCId(request), request);