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March 10, 20241 min read

TypeScript Best Practices in 2024

TypeScriptJavaScriptBest Practices

TypeScript Best Practices in 2024


TypeScript has become the standard for large-scale JavaScript applications. Here are some best practices.


Use Strict Mode


Always enable strict mode in your tsconfig.json:


{ "compilerOptions": { "strict": true }}

Prefer Interfaces Over Types for Objects


// Prefer this

interface User { name: string; email: string;}

// Over this (for object shapes)

type User = { name: string; email: string;};

Use Discriminated Unions


type Result<T> =

| { success: true; data: T } | { success: false; error: string };

Avoid 'any' Type


Use 'unknown' instead of 'any' when type is truly unknown.


Following these practices will help you write better TypeScript code!