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9 pages in this section.
Why Node.js never actually runs TypeScript, how source becomes executable JavaScript, and the trade-offs between the toolchains that make that happen - the mental model behind every other page in this section.
Learn to configure TypeScript for Node.js backend services with tsconfig.json and strict defaults. Explore examples for typed environment variables and importing built-ins.
Compare tsx, tsc, and ts-node to choose the best TypeScript tool for development, testing, and production builds.
Type Express and Fastify handlers for compile-time safety. Learn to type request bodies, params, queries, and middleware with generics and schema inference.
Validate environment variables, HTTP request bodies, and webhook payloads at runtime using Zod schemas to ensure typed, trusted data.
Implement TypeScript best practices in Node.js to improve code quality. Learn to configure strict compiler options, validate data at boundaries, and manage dependencies.
A single-page roundup of every highlight bullet from the 8 pages in the TypeScript in Node section, grouped by source page so you can scan all 32 takeaways without opening each article individually.