The Ultimate Technical Comparison Guide Between Blazor and TypeScript

Introduction

In today’s fast-evolving web development landscape, selecting the right technology stack can significantly influence a software project’s success. As a senior software developer at Near Coding, a trusted Nearshore Software Development Company, I’ve had the opportunity to build enterprise-grade applications using both Microsoft Blazor and TypeScript. Each technology offers distinct advantages and trade-offs.

This guide presents a comprehensive, 3600-word technical comparison between Blazor and TypeScript. We will explore:

What Blazor and TypeScript are
Their architectures and primary use cases
Key differences in performance, tooling, and development models
Guidance on when to choose one over the other
Real-world examples and code samples
Why Near Coding is the ideal partner for projects using either technology

What is Blazor?

Blazor is a modern, open-source web framework developed by Microsoft. It allows developers to build interactive, client-side web UIs using C# and .NET, eliminating the need for JavaScript in many scenarios. Blazor enables a unified development experience across client and server using a single language: C#.

Brief History

Blazor debuted as a proof-of-concept by Steve Sanderson at NDC Oslo in 2017. The name combines “Browser” and “Razor” (the .NET view engine). It has since matured into a robust framework within the ASP.NET Core ecosystem, particularly with the releases of .NET Core 3.0, .NET 5, .NET 6, and beyond.

How Blazor Works

Blazor apps consist of reusable Razor components—a blend of HTML and C#. These components manage data binding, event handling, and service interactions. Blazor supports two hosting models:

Blazor WebAssembly (WASM): Runs entirely in the browser via WebAssembly. The .NET runtime is downloaded to the client, enabling C# code execution.
Blazor Server: Executes on the server. UI updates are communicated over a real-time SignalR connection.

Blazor Architecture Overview:

Example: Blazor Component

@page "/greeting"

<h3>Greeting Component</h3>

<p>Hello, @name!</p>

<input @bind="name" placeholder="Enter your name" />

@code {
    private string name = "World";
}

What is TypeScript?

TypeScript is a statically typed, object-oriented programming language developed by Microsoft. It is a superset of JavaScript, introducing static types, interfaces, and modern class-based structures. TypeScript compiles to plain JavaScript, enabling cross-browser compatibility.

Brief History

Created by Anders Hejlsberg (the mind behind C#), TypeScript was announced in 2012 to address JavaScript’s limitations in large-scale applications. Today, it is widely used with frameworks such as Angular (which adopted it by default), React, and Vue, and has become the industry standard for robust frontend development.

How TypeScript Works

TypeScript offers type annotations and inference, catching errors at compile time. The TypeScript compiler (tsc) transforms .ts files into executable JavaScript.

TypeScript improves productivity through:

Static type checking
Rich editor tooling (IntelliSense, autocompletion)
Refactor-friendly syntax
Scalable project architecture

TypeScript Development Flow:

Example: React + TypeScript Component

import React, { useState } from 'react';

interface GreetingProps {
  defaultName?: string;
}

const GreetingComponent: React.FC<GreetingProps> = ({ defaultName = "World" }) => {
  const [name, setName] = useState(defaultName);

  return (
    <div>
      <h3>Greeting Component</h3>
      <p>Hello, {name}!</p>
      <input
        type="text"
        value={name}
        onChange={(e) => setName(e.target.value)}
        placeholder="Enter your name"
      />
    </div>
  );
};

export default GreetingComponent;

Key Technical Comparisons

1. Language Base

Feature	Blazor	TypeScript
Language	C#	JavaScript superset
Compilation Target	WebAssembly / SignalR	JavaScript
Runtime	.NET	JavaScript engine

2. Component Model

Feature	Blazor	TypeScript (React Example)
Syntax	Razor (HTML + C#)	JSX + TypeScript
Binding	`@bind`, `@code`	`useState`, `onChange`
Logic Sharing	With .NET backend	With Node.js or microservices

Sample Comparison

Blazor

@code {
  string name = "World";
}
<h1>Hello, @name!</h1>

React + TypeScript

interface Props {
  name: string;
}

const HelloWorld = ({ name }: Props) => <h1>Hello, {name}!</h1>;

3. Development Ecosystem

Area	Blazor	TypeScript
IDE Support	Visual Studio (best)	VS Code, WebStorm
Testing Tools	xUnit, bUnit	Jest, Mocha, Cypress
State Management	.NET DI Services	Redux, MobX, Context API

Advantages of Blazor

Full-stack C# development with shared models
Tight integration with ASP.NET Core backend
Strong tooling and debugging in Visual Studio
Consistency across client and server code

Advantages of TypeScript

Large ecosystem and broad community support
Preferred by modern frontend frameworks (React, Angular, Vue)
Faster build iterations and smaller payloads
Flexible UI development and strong third-party integrations

Differentiating Use Cases

When to Use Blazor

Your team has strong .NET/C# expertise
You need code reuse between frontend and backend
You are modernizing existing ASP.NET apps
Ideal for internal tools, dashboards, and intranet portals

When to Use TypeScript

Your team is experienced with JavaScript
You’re building highly dynamic UIs with React or Angular
You need fast iteration cycles and modular architecture
Ideal for consumer apps, PWAs, and real-time experiences

Real-World Examples from Near Coding

Case Study 1: Blazor Server for Admin Dashboard

We developed an HR dashboard for a client using Blazor Server:

Shared C# models across frontend and APIs
Rapid UI prototyping with Razor components
Integrated authentication via IdentityServer

Case Study 2: TypeScript + React Customer Portal

We created a self-service portal for a legal documents SaaS platform:

Real-time chat and alerts via SignalR
Rich UI with Ant Design components
Modular, testable frontend code with React + TypeScript

Code-Level Comparison: Form Handling

Blazor

<EditForm Model="user" OnValidSubmit="HandleSubmit">
  <InputText id="name" @bind-Value="user.Name" />
  <ValidationSummary />
</EditForm>

@code {
  private User user = new();
  void HandleSubmit() => Console.WriteLine(user.Name);
}

React + TypeScript

function FormComponent() {
  const [name, setName] = useState('');
  const handleSubmit = (e: React.FormEvent) => {
    e.preventDefault();
    console.log(name);
  };
  return (
    <form onSubmit={handleSubmit}>
      <input value={name} onChange={(e) => setName(e.target.value)} />
    </form>
  );
}

Tooling and Build Systems

Feature	Blazor	TypeScript
Build Tools	MSBuild, dotnet CLI	Webpack, Vite, tsc
Hot Reload	Yes	Yes
Package Management	NuGet	npm, yarn
Bundle Size	Larger (WASM)	Typically smaller

Performance Considerations

Metric	Blazor WebAssembly	TypeScript SPA
First Load	Slower due to .NET DLLs	Fast, optimized builds
Runtime Speed	Comparable after load	Highly optimized by JS engines
Offline Support	Yes	Yes

Note: Blazor Server apps are optimal in low-latency environments. SPAs built with TypeScript are better suited for low-bandwidth or mobile scenarios.

Near Coding: Experts in Both Worlds

At Near Coding, we provide Nearshore Custom Software Development across:

.NET / Blazor architecture and development
React, Angular, Vue with TypeScript
DevOps, CI/CD, and Cloud (Azure, AWS)
Scalable multitenant SaaS platforms

Why Clients Choose Us

Bilingual senior developers exclusively from Costa Rica
Aligned U.S. time zones
Deep technical knowledge in Microsoft and JS ecosystems
Proven success in enterprise software delivery

Conclusion

Choosing between Blazor and TypeScript depends on your project’s goals, team expertise, and existing infrastructure.

Choose Blazor if:

You’re already invested in the .NET ecosystem
You want to share logic across backend and frontend

Choose TypeScript if:

You need a lightweight, fast, interactive SPA
You use or prefer React, Angular, or Vue

N ear Coding can help you excel with either choice. Whether you’re building an internal Blazor portal or a customer-facing TypeScript application, we have the expertise to deliver.

Let’s build your next great web application—together.
Contact us to discuss your project and assemble a world-class development team with Near Coding.

Let's talk about your next project

Near Coding

Nearshore Software Services Partner
Service oriented, cost-effective, reliable and well-timed specialized in Software Development and located in Costa Rica

Contact Info

Location: San José, Costa Rica

US Phone: +1 321 222 5626

CR Phone: (506) 8883 4278

Email: info@nearcoding.com

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