add task solution

package.json

@@ -19,7 +19,7 @@
     "@babel/preset-env": "^7.24.8",
     "@babel/preset-typescript": "^7.24.7",
     "@mate-academy/eslint-config": "latest",
-    "@mate-academy/scripts": "^1.9.5",
+    "@mate-academy/scripts": "^2.1.3",
     "@mate-academy/students-ts-config": "latest",
     "@types/jest": "^29.5.12",
     "@types/node": "^20.14.10",

src/figuresClasses.ts

@@ -1,11 +1,99 @@
-export interface Figure {}
+export interface Figure {
+  shape: 'triangle' | 'circle' | 'rectangle';
+  color: 'red' | 'green' | 'blue';
+  getArea(): number;
+}
+
+export class Triangle implements Figure {
+  shape: 'triangle';
+
+  color: 'red' | 'green' | 'blue';
+
+  a: number;
+
+  b: number;
+
+  c: number;
+
+  constructor(
+    color: 'red' | 'green' | 'blue',
+    a: number,
+    b: number,
+    c: number,
+  ) {
+    if (a <= 0 || b <= 0 || c <= 0) {
+      throw new Error('The sides of a triangle must be positive numbers.');
+    }
+
+    if (Math.max(a, b, c) >= a + b + c - Math.max(a, b, c)) {
+      throw new Error(
+        'Sides 1, 2, and 3 cannot form a triangle.The longest' +
+          'side must be less than the sum of the other two sides',
+      );
+    }
+    this.shape = 'triangle';
+    this.color = color;
+    this.a = a;
+    this.b = b;
+    this.c = c;
+  }
+
+  getArea(): number {
+    const s = (this.a + this.b + this.c) / 2;
+    const area = Math.sqrt(s * (s - this.a) * (s - this.b) * (s - this.c));
+
+    return Math.floor(area * 100) / 100;
+  }
+}
 
-export class Triangle implements Figure {}
+export class Circle implements Figure {
+  shape: 'circle';
 
-export class Circle implements Figure {}
+  color: 'red' | 'green' | 'blue';
 
-export class Rectangle implements Figure {}
+  radius: number;
+
+  constructor(color: 'red' | 'green' | 'blue', radius: number) {
+    if (radius <= 0) {
+      throw new Error('The radius of a circle must be a positive number');
+    }
+
+    this.shape = 'circle';
+    this.color = color;
+    this.radius = radius;
+  }
+
+  getArea(): number {
+    return Math.floor(Math.PI * this.radius * this.radius * 100) / 100;
+  }
+}
+
+export class Rectangle implements Figure {
+  shape: 'rectangle';
+
+  color: 'red' | 'green' | 'blue';
+
+  width: number;
+
+  height: number;
+
+  constructor(color: 'red' | 'green' | 'blue', width: number, height: number) {
+    if (width <= 0 || height <= 0) {
+      throw new Error(
+        'The width and height of a rectangle must be positive numbers',
+      );
+    }
+    this.shape = 'rectangle';
+    this.color = color;
+    this.width = width;
+    this.height = height;
+  }
+
+  getArea(): number {
+    return Math.floor(this.width * this.height * 100) / 100;
+  }
+}
 
 export function getInfo(figure): string {
-  return typeof figure;
+  return `A ${figure.color} ${figure.shape} - ${figure.getArea()}`;
 }