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Some best practices to follow when working with TypeScript

/ Following good practices in TypeScript can help improve the quality, maintainability, and readability of your code, making it easier to work with and reducing the likelihood of errors and bugs.

#best practice
#typescript
✍️ jenuel.dev
Mar. 10, 2023. 2:40 PM

Following good practices in TypeScript can help improve the quality, maintainability, and readability of your code, making it easier to work with and reducing the likelihood of errors and bugs.

Use explicit types

TypeScript is designed to provide static type checking for JavaScript code. It's best to take full advantage of this feature and declare the types of all variables and function parameters explicitly.

Use interfaces and types for complex data structures

Interfaces and types allow you to define complex data structures and provide a way to ensure that your code is correctly using these structures.

Use enums instead of magic numbers

Magic numbers (hard-coded numerical values) can make your code difficult to understand and maintain. Using enums instead can make your code more readable and easier to modify.

Avoid using the any type

Any type is useful when you're unsure about the type of a value, but using it too often can defeat the purpose of using TypeScript. Try to use explicit types or union types instead.

Use strictNullChecks

Enabling strictNullChecks in your TypeScript configuration can help catch null and undefined errors at compile time, which can save you a lot of debugging time.

Use read-only properties

If you have properties that should not be modified after initialization, mark them as read only to prevent accidental modifications.

Use namespace or module pattern

Using the namespace or module pattern can help you organize your code and avoid naming conflicts.

Use generics

Generics allow you to create reusable components that can work with different types of data. This can help you write more flexible and maintainable code.

Use async/await instead of callbacks

Async/await can make your asynchronous code more readable and easier to reason about than callbacks.

Write tests

TypeScript provides static type checking, but it's still important to write tests to ensure that your code behaves correctly. Use a testing framework like Jest or Mocha to write and run tests for your TypeScript code.


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