feat: update calculator-with-method-chaining

Author: nutkiattisak

2726. calculator-with-method-chaining/index.js

@@ -0,0 +1,68 @@
+class Calculator {
+  /**
+   * @param {number} value
+   */
+  constructor(value) {
+    this.result = value
+    this.isError = false
+  }
+
+  /**
+   * @param {number} value
+   * @return {Calculator}
+   */
+  add(value) {
+    this.result += value
+    return this
+  }
+
+  /**
+   * @param {number} value
+   * @return {Calculator}
+   */
+  subtract(value) {
+    this.result -= value
+    return this
+  }
+
+  /**
+   * @param {number} value
+   * @return {Calculator}
+   */
+  multiply(value) {
+    this.result *= value
+    return this
+  }
+
+  /**
+   * @param {number} value
+   * @return {Calculator}
+   */
+  divide(value) {
+    if (value === 0) {
+      this.isError = true
+    }
+    this.result /= value
+    return this
+  }
+
+  /**
+   * @param {number} value
+   * @return {Calculator}
+   */
+  power(value) {
+    this.result **= value
+    return this
+  }
+
+  /**
+   * @return {number}
+   */
+  getResult() {
+    if (this.isError) {
+      return "Division by zero is not allowed"
+    }
+
+    return this.result
+  }
+}