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TypeScript Best Practices
Key practices for writing better TypeScript code.
July 1, 2026
TypeScript
JavaScript
Best Practices
Type Safety
Always define types for your functions and variables.
interface User {
id: string;
name: string;
email: string;
}
function getUser(id: string): User {
// implementation
}
Avoid Any
Never use any type. Use unknown instead.
Use Interfaces
Define interfaces for your data structures.
Strict Mode
Always enable strict mode in tsconfig.json.
{
"compilerOptions": {
"strict": true
}
}