Stack: TypeScript Implementation with Generics
Key Takeaways
- ✓TypeScript generics make Stack reusable across data types.
- ✓Static typing catches errors at compile time rather than runtime.
- ✓The implementation achieves O(1) average complexity.
- ✓TypeScript is ideal for production algorithm implementations.
Stack in TypeScript: Overview
TypeScript Implementation
class Stack<T> {
private items: T[] = [];
push(item: T): void { this.items.push(item); }
pop(): T {
if (this.isEmpty()) throw new Error("Stack underflow");
return this.items.pop()!;
}
peek(): T {
if (this.isEmpty()) throw new Error("Stack empty");
return this.items[this.items.length - 1];
}
isEmpty(): boolean { return this.items.length === 0; }
get size(): number { return this.items.length; }
}
function isBalanced(s: string): boolean {
const stack = new Stack<string>();
const pairs: Record<string, string> = { ')': '(', ']': '[', '}': '{' };
for (const ch of s) {
if ('([{'.includes(ch)) stack.push(ch);
else if (ch in pairs) {
if (stack.isEmpty() || stack.pop() !== pairs[ch]) return false;
}
}
return stack.isEmpty();
}
console.log(isBalanced("({[]})")); // trueHow the Algorithm Works
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See PlansFrequently Asked Questions
Why use TypeScript for Stack?
TypeScript adds type safety, generics, and better IDE support compared to JavaScript. For Stack, this means compile-time error checking, reusable generic implementations, and improved code documentation through types. The compiled output performs identically to hand-written JavaScript.
Do generics affect performance in TypeScript?
No, TypeScript generics are erased at compile time and have zero runtime overhead. The generated JavaScript contains no type information, so the performance is identical to an untyped implementation. Generics are purely a development-time tool for safety and documentation.
Can I use Stack TypeScript code in React?
Absolutely. TypeScript is the standard for React development, and algorithm implementations can be imported directly into React components or hooks. Ensure the algorithm runs efficiently to avoid blocking the UI thread for large inputs.
How do I handle edge cases in TypeScript Stack?
Use TypeScript's strict null checking and union types to handle edge cases explicitly. For example, the function signature can return T[] | null to indicate potential failure, and the compiler forces callers to handle both cases. This prevents null reference errors at runtime.
Is TypeScript Stack suitable for production?
Yes, TypeScript is widely used in production systems. The type safety and tooling support make it excellent for maintaining algorithm implementations in large codebases. Companies like Google, Microsoft, and Airbnb use TypeScript in production.
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