DEV Community

Ahmad Tibibi
Ahmad Tibibi

Posted on

TS1119: An object literal cannot have property and accessor with the same name

TS1119: An object literal cannot have property and accessor with the same name

TypeScript is a powerful, statically typed superset of JavaScript that adds optional types, classes, interfaces, and other features to improve the development experience. Types in TypeScript allow developers to define what kinds of values can be assigned to variables, leading to more predictable and maintainable code. You can think of types as contracts that specify what data structures should look like, ensuring type safety and catching potential errors at compile time rather than at runtime.

If you're interested in learning more about TypeScript or using AI tools to enhance your coding skills, I recommend subscribing to my blog or checking out gpteach for coding education resources.

What is a Superset Language?

A superset language builds upon another language, adding new features while remaining fully compatible with the original. In the case of TypeScript, it is a superset of JavaScript, meaning that any valid JavaScript code can be run in TypeScript without modification. This makes it easy for JavaScript developers to adopt TypeScript gradually, enhancing their coding with type definitions and better tooling.


Understanding TS1119: An object literal cannot have property and accessor with the same name

When working with TypeScript, you might encounter the error TS1119: An object literal cannot have property and accessor with the same name. This error typically occurs when you attempt to define both a property and an accessor (getter/setter) with the same name within an object literal.

Here’s a common scenario that leads to this error:

const obj = {
    name: "John",
    get name() { return this.name; }
};
Enter fullscreen mode Exit fullscreen mode

In this example, we are trying to define an object obj with a property name and a getter name. TypeScript throws the TS1119 error because it's ambiguous which name it refers to when accessing obj.name.

How to Fix TS1119

To resolve the TS1119 error, you can either rename the property or the accessor. Here are two valid approaches:

  1. Renaming the property:
const obj = {
    userName: "John",
    get name() { return this.userName; }
};
Enter fullscreen mode Exit fullscreen mode
  1. Using a different accessor name:
const obj = {
    name: "John",
    get fullName() { return this.name; }
};
Enter fullscreen mode Exit fullscreen mode

Both approaches eliminate the conflict that leads to the TS1119 error, allowing your code to compile successfully.

Important to Know!

  • When defining an object literal in TypeScript, ensure that property names are unique across properties and accessors to prevent the TS1119 error.
  • Remember that TypeScript aims to provide type safety and clarity in your code, so avoiding name conflicts is crucial.

FAQs

Q: What does it mean when TypeScript raises TS1119?

A: It indicates that there is a naming conflict between a property and an accessor within the same object literal, which can lead to ambiguity in the code.

Q: Why should I use TypeScript instead of plain JavaScript?

A: TypeScript provides optional static typing, which allows for early error detection, better tooling, autocompletion in IDEs, and more maintainable code.

Important to Know!

  • Always ensure you are using distinct names for properties and accessors within an object.
  • Utilize TypeScript’s IDE integrations to help catch naming conflicts early in the development process.

In conclusion, encountering TS1119: An object literal cannot have property and accessor with the same name is a common pitfall in TypeScript. To avoid it, maintain clear naming conventions and ensure your property and accessor names do not overlap. By adhering to these practices, you can benefit from the type safety and features TypeScript offers, improving your development workflow.

Image of Docusign

🛠️ Bring your solution into Docusign. Reach over 1.6M customers.

Docusign is now extensible. Overcome challenges with disconnected products and inaccessible data by bringing your solutions into Docusign and publishing to 1.6M customers in the App Center.

Learn more

Top comments (0)

A Workflow Copilot. Tailored to You.

Pieces.app image

Our desktop app, with its intelligent copilot, streamlines coding by generating snippets, extracting code from screenshots, and accelerating problem-solving.

Read the docs

👋 Kindness is contagious

Discover a treasure trove of wisdom within this insightful piece, highly respected in the nurturing DEV Community enviroment. Developers, whether novice or expert, are encouraged to participate and add to our shared knowledge basin.

A simple "thank you" can illuminate someone's day. Express your appreciation in the comments section!

On DEV, sharing ideas smoothens our journey and strengthens our community ties. Learn something useful? Offering a quick thanks to the author is deeply appreciated.

Okay