было тяжело но я справился

package.json

@@ -8,7 +8,7 @@
   },
   "author": "",
   "license": "ISC",
-  "dependencies": {
-    "jest": "^26.6.3"
+  "devDependencies": {
+    "jest": "^29.7.0"
   }
 }

src/task_1/index.js

@@ -15,6 +15,47 @@
 @param {number} hours - Час
 @param {number} minutes - Минуты
  */
-function Time(hours, minutes) { };
+function Time(hours, minutes) { 
+	try{
+		if(hours <= 24 && hours >= 0){
+			if(minutes <= 60 && minutes >= 0){
+				// obj = {hours, minutes};
+				this.hours = hours;
+				this.minutes = minutes;
+			}
+			else{
+				throw new Error('err');
+			}
+		}
+		else{
+			throw new Error('err');
+		}
+	}catch{
+		throw new Error('err');
+	}
+};
+Time.prototype.isEarlier = function(time){
+	if(this.hours < time.hours){
+		return true;
+	}
+	else if(this.hours === time.hours){
+		if(this.minutes < time.minutes){
+			return true;
+		}
+	}
+	return false;
+}
+Time.prototype.isLater = function(time){
+	if(this.hours > time.hours){
+		return true;
+	}
+	else if(this.hours === time.hours){
+		if(this.minutes >= time.minutes){
+			return true;
+		}
+	}
+	return false;
+
+}
 
 module.exports.Time = Time;

src/task_2/index.js

@@ -17,6 +17,22 @@ const { Time } = require('../task_1/index');
 @param {Time} startTime - Время начала встречи
 @param {Time} endTime - Время конца встречи
  */
-function Meeting(meetingDate, startTime, endTime) { };
+function Meeting(meetingDate, startTime, endTime) {
+
+	if (!startTime || !endTime || 
+		endTime.hours >= 19 || startTime.hours <= 8 ||
+		startTime.hours > endTime.hours) {
+		throw new Error('err');
+	}
+	else{
+		this.meetingDate = meetingDate;
+		this.startTime = startTime;
+		this.endTime = endTime;
+	}
+};
+Meeting.prototype.isMeetingInTimeRange = function(start,end){
+	return !(this.startTime.isLater(start) && this.startTime.isLater(end) 
+	|| this.endTime.isEarlier(start) && this.endTime.isEarlier(end));
+}
 
 module.exports.Meeting = Meeting;

src/task_3/index.js

@@ -11,6 +11,19 @@
 @param {Date} vacationEndDate - Время конца отпуска
  */
 
-function Vacation(vacationStartDate, vacationEndDate) { };
+function Vacation(vacationStartDate, vacationEndDate) { 
+	if(!vacationStartDate || !vacationEndDate
+	|| vacationStartDate >= vacationEndDate){
+		throw new Error('err');
+	}
+	this.vacationStartDate = vacationStartDate;
+	this.vacationEndDate = vacationEndDate;
+};
+Vacation.prototype.isDateInVacation = function(date){
+	if(this.vacationStartDate <= date && this.vacationEndDate >= date){
+		return true;
+	}
+	return false;
+}
 
 module.exports.Vacation = Vacation;

src/task_4/index.js

@@ -12,6 +12,9 @@ const { Vacation } = require('../task_3/index');
 @param {Array<Vacation>} vacations - Массив отпусков
  */
 
-function Organaizer(meetings, vacations) { };
+function Organaizer(meetings, vacations) {
+	this.meetings = meetings;
+	this.vacations = vacations;
+ };
 
 module.exports.Organaizer = Organaizer;

src/task_5/index.js

@@ -15,4 +15,35 @@ const { Organaizer } = require('../task_4/index');
 		В промежуток отпуска не назначено никаких встреч
  */
 
+Organaizer.prototype.addMeeting = function(meeting){
+	for (let item of this.vacations){
+		if (item.isDateInVacation(meeting.meetingDate)){
+			return false;
+		}
+	};
+	for (let meet of this.meetings){
+		if (meet.meetingDate.toString() === meeting.meetingDate.toString() 
+		&& (meet.isMeetingInTimeRange(meeting.startTime, meeting.endTime)))
+		{
+			return false;
+		}
+	};
+	this.meetings.push(meeting)
+	return true;
+}
+
+Organaizer.prototype.addVacation = function(vacation){
+	for(let item of this.vacations){
+		if(vacation.isDateInVacation(item.vacationStartDate) || vacation.isDateInVacation(item.vacationEndDate)){
+			return false;
+		}
+	};
+	for(let meet of this.meetings){
+		if(vacation.isDateInVacation(meet.meetingDate))
+		return false;
+	};
+	this.vacations.push(vacation);
+	return true;
+}
+
 module.exports.Organaizer = Organaizer;