View difference between Paste ID: Q5vgnwf6 and mPuCwrYL

 class VeterinaryClinic {
     clients = [];
 
     constructor (clinicName, capacity) {
         this.clinicName = clinicName;
         this.capacity = capacity;
         this.currentWorkload = 0;
         this.totalProfit = 0;
     }
 
     getPet(owner, petName) {
         if (!owner) {
             return;
         }
 
         return owner.pets.find(x => x.petName == petName);
     }
 
     getClient(ownerName) {
         let client = this.clients.find(x => x.ownerName == ownerName);
 
         return client;
     }
 
     newCustomer(ownerName, petName, kind, procedures) {
         if (this.currentWorkload >= this.capacity) {
             throw new Error('Sorry, we are not able to accept more patients!');
         }
 
         // TODO: Check if currently in clinic with procedures
         let currentOwner = this.getClient(ownerName);
         let currentPet = this.getPet(currentOwner, petName);
         if (currentOwner && currentPet) {
             if (currentPet.procedures.length > 0) {
                 throw new Error(`This pet is already registered under ${currentOwner.ownerName} name! ${currentPet.petName} is on our lists, waiting for ${currentPet.procedures.join(', ')}.`);
             } else {
                 currentPet.procedures = procedures
             }
         } else if (!currentOwner) {
             currentOwner = {
                 ownerName,
                 pets: [],
             };
 
             this.clients.push(currentOwner);
         }
 
         // Add pet to owner
         currentOwner.pets.push({
             petName,
             kind,
             procedures,
         });
 
         // Modify workload
         this.currentWorkload++;
 
         // return welcome message
         return `Welcome ${petName}!`;
     }
 
     onLeaving (ownerName, petName) {
         let currentOwner = this.getClient(ownerName);
 
         if (!currentOwner) {
             throw new Error('Sorry, there is no such client!');
         }
 
         let currentPet = this.getPet(currentOwner, petName);
 
         if (!currentPet || currentPet.procedures.length == 0) {
             throw new Error(`Sorry, there are no procedures for ${petName}!`);
         }
 
         // Add new price 500.00
         this.totalProfit += currentPet.procedures.length * 500;
 
         // update workload
         this.currentWorkload--;
 
         // clear procedures of the current pet
         currentPet.procedures = [];
 
         // return
         return `Goodbye ${currentPet.petName}. Stay safe!`;
     }
 
     toString() {
         let busyPercentage = Math.floor(this.currentWorkload / this.capacity * 100);
 
         let result = `${this.clinicName} is ${busyPercentage}% busy today!`;
         result += '\n';
         result += `Total profit: ${this.totalProfit.toFixed(2)}$`;
 
         this.clients.sort((a, b) => a.ownerName.localeCompare(b.ownerName));
 
         for (const client of this.clients) {
             client.pets.sort((a, b) => a.petName.localeCompare(b.petName));
 
             result += '\n';
             result += `${client.ownerName} with:`;
 
             for (const pet of client.pets) {
                 result += '\n';
                 result += `---${pet.petName} - a ${pet.kind.toLowerCase()} that needs: ${pet.procedures.join(', ')}`
             }
         }
 
         return result.trim();
     }
 }
 
 // let VeterinaryClinic = result;
 // let clinic = new VeterinaryClinic('SoftCare', 10);
 // console.log(clinic.newCustomer('Jim Jones', 'Tom', 'Cat', ['A154B', '2C32B', '12CDB']));
 // console.log(clinic.onLeaving('Jim Jones', 'Tom'));
 // console.log(clinic.newCustomer('Jim Jones', 'Tom', 'Cat', ['A154B', '2C32B', '12CDB']));
 // console.log(clinic.newCustomer('Anna Morgan', 'Max', 'Dog', ['SK456', 'DFG45', 'KS456']));
 // console.log(clinic.newCustomer('Jim Jones', 'Tiny', 'Cat', ['A154B']));
 // console.log(clinic.onLeaving('Jim Jones', 'Tiny'));
 // console.log(clinic.toString());
 // clinic.newCustomer('Jim Jones', 'Sara', 'Dog', ['A154B']);
 // console.log(clinic.toString());
 
 let clinic = new VeterinaryClinic('SoftCare', 10);
 console.log(clinic.newCustomer('Jim Jones', 'Tom', 'Cat', ['A154B', '2C32B', '12CDB']));
 // console.log(clinic.newCustomer('Anna Morgan', 'Max', 'Dog', ['SK456', 'DFG45', 'KS456']));
 // console.log(clinic.newCustomer('Jim Jones', 'Tiny', 'Cat', ['A154B']));
 console.log(clinic.onLeaving('Jim Jones', 'Tiny'));
 // console.log(clinic.toString());
 // clinic.newCustomer('Jim Jones', 'Sara', 'Dog', ['A154B']);
 // console.log(clinic.toString());
 
 
 // Welcome Tom!
 // Welcome Max!
 // Welcome Tiny!
 // Goodbye Tiny. Stay safe!
 // SoftCare is 20% busy today!
 // Total profit: 500.00$
 // Anna Morgan with:
 // ---Max - a dog that needs: SK456, DFG45, KS456
 // Jim Jones with:
 // ---Tiny - a cat that needs:
 // ---Tom - a cat that needs: A154B, 2C32B, 12CDB
 // SoftCare is 30% busy today!
 // Total profit: 500.00$
 // Anna Morgan with:
 // ---Max - a dog that needs: SK456, DFG45, KS456
 // Jim Jones with:
 // ---Sara - a dog that needs: A154B
 // ---Tiny - a cat that needs:
 // ---Tom - a cat that needs: A154B, 2C32B, 12CDB