update code and instructions

content/01-introduction/05-Enumerated-Values/code.ts

@@ -0,0 +1,88 @@
+const code: any = {
+  type: "object",
+  properties: {
+    name: {
+      type: "string",
+    },
+    age: {
+      type: "number",
+    },
+  },
+};
+
+const solution = structuredClone(code);
+solution.properties.role = {
+  enum: ["employee", "manager", "admin"],
+};
+
+const validationSchema = {
+  type: "object",
+  properties: {
+    type: {
+      type: "string",
+      const: "object",
+    },
+    properties: {
+      type: "object",
+      properties: {
+        name: {
+          type: "object",
+          properties: {
+            type: {
+              type: "string",
+              const: "string",
+            },
+          },
+          required: ["type"],
+        },
+        age: {
+          type: "object",
+          properties: {
+            type: {
+              type: "string",
+              const: "number",
+            },
+          },
+          required: ["type"],
+        },
+        role: {
+          type: "object",
+          properties: {
+            enum: {
+              type: "array",
+              items: {
+                allOf: [
+                  {
+                    anyOf: [
+                      {
+                        const: "employee",
+                      },
+                      {
+                        const: "manager",
+                      },
+                      {
+                        const: "admin",
+                      },
+                    ],
+                  },
+                  {
+                    type: "string",
+                  },
+                ],
+              },
+            },
+          },
+          required: ["enum"],
+        },
+      },
+      required: ["name", "age", "role"],
+    },
+  },
+  required: ["type", "properties"],
+};
+
+module.exports = {
+  code,
+  solution,
+  validationSchema,
+};

content/01-introduction/05-Enumerated-Values/instructions.mdx

@@ -0,0 +1,57 @@
+---
+title: "Enumerated values"
+description: "Constrain the value of a property to a fixed set of values using JSON Schema."
+keywords: "enum"
+---
+
+# Enumerated values
+
+In the previous step, we have learned to define a constant value for a property using the `const` keyword. However a role of an employee can not be just `employee` it can be also `manager`, `admin` etc.
+
+We want to constrain  the value of the `role` property to a fixed set of values which are `employee`, `manager` and `admin`.
+
+
+**For Example:** both of these values for role is valid in the below data
+```json highlightLineStart={4} 
+{
+  "name": "John Doe ",
+  "age": 25,
+  "role": "manager"
+}
+```
+```json highlightLineStart={4} 
+{
+  "name": "John Doe ",
+  "age": 25,
+  "role": "admin"
+}
+```
+
+
+
+We can use the `enum` keyword to define this fixed set of values for a property.
+
+## Schema Definition
+
+Here is how we can define the `role` property in the schema with the type `string` and the fixed set of values `employee`, `manager` and `admin`.
+
+```json 
+{
+  ...
+    "role": {
+      "enum": ["employee", "manager", "admin"]
+    }
+}
+```
+
+
+
+<GoodToKnowBox>
+
+The values passed to the `const` keyword are **case-sensitive**.
+
+`"const": "employee"` is valid 
+
+`"const": "Employee"` is **in**valid 
+
+</GoodToKnowBox>