Instruction: Describe the concept of Discriminated Union and provide a code example.
Context: This question tests the candidate's knowledge of advanced union types in TypeScript, specifically Discriminated Unions, and their use in creating type-safe code.
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"To implement a discriminated union, we first need to define types that have a common, literal-typed property. This property is known as the discriminant or tag. Each type within the union will have a unique value for this property, which TypeScript can use to determine the correct type in a given context. Let's consider a practical example relevant to a Frontend Developer role, where we might be handling different shapes in a drawing application."
```typescript type Circle = { kind: 'circle'; radius: number; };...