Typescritp: Sobrecarga de Construtor

📰 Dev.to · Yuri Peixinho

Learn how to implement constructor overloading in TypeScript to handle multiple constructor signatures

intermediate Published 13 Jun 2026
Action Steps
  1. Define a class with multiple constructor signatures using overload signatures
  2. Implement the constructor with optional parameters to handle different scenarios
  3. Use default values for optional parameters to simplify the implementation
  4. Test the class with different constructor calls to ensure correctness
  5. Apply this pattern to other classes that require flexible constructor initialization
Who Needs to Know This

This benefits software engineers and developers working with TypeScript, as it improves code flexibility and readability

Key Insight

💡 Use overload signatures and optional parameters to implement constructor overloading in TypeScript

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💡 Implement constructor overloading in #TypeScript to handle multiple signatures and improve code flexibility

Key Takeaways

Learn how to implement constructor overloading in TypeScript to handle multiple constructor signatures

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Title: Typescript: Sobrecarga de Construtor

URL Source: https://dev.to/yuripeixinho/sobrecarga-de-construtor-hkh

Published Time: 2026-06-13T21:53:26Z

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Posted on Jun 13 • Edited on Jun 17

# Typescript: Sobrecarga de Construtor

[#typescript](https://dev.to/t/typescript)[#programming](https://dev.to/t/programming)[#tutorial](https://dev.to/t/tutorial)[#beginners](https://dev.to/t/beginners)

# [](https://dev.to/yuripeixinho/sobrecarga-de-construtor-hkh#introdu%C3%A7%C3%A3o) Introdução

Assim como funções, construtores podem ter múltiplas assinaturas:

## [](https://dev.to/yuripeixinho/sobrecarga-de-construtor-hkh#o-problema)**O problema**

```
class Evento {
constructor(id: string, tipo: string, competencia: string) { ... }
// como aceitar também só id e tipo, sem competencia?
}
```

## [](https://dev.to/yuripeixinho/sobrecarga-de-construtor-hkh#solu%C3%A7%C3%A3o-overload-signatures)**Solução — overload signatures**

```
class Evento {
id: string;
tipo: string;
competencia: string;

// assinaturas
constructor(id: string, tipo: string);
constructor(id: string, tipo: string, competencia: string);

// implementação
constructor(id: string, tipo: string, competencia: string = "nao-definida") {
this.id = id;
this.tipo = tipo;
this.competencia = comp
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