tsconfig.json Generator
Free online tsconfig.json Generator that runs directly in your browser.
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Other tools you may find usefultsconfig.json generator - online TypeScript configuration
The tsconfig.json generatorcreates a TypeScript configuration file tailored to your project: React, Node.js, Next.js, Vue, Angular. Set compiler options through an intuitive interface and download ready-made tsconfig.json with comments explaining each option.
What is tsconfig.json?
tsconfig.json is the TypeScript compiler (tsc) configuration file. Defines: which files to compile (include/exclude/files), compiler options (compilerOptions) - ES target, modules, strict mode, paths, references to other TypeScript projects (project references). The file is required when working with TypeScript in a project - without it, the compiler uses default settings that often do not match the project. The generator creates tsconfig.json with good default values for popular frameworks.
Most important options compilerOptions
target- which version of ECMAScript to compile to (ES5, ES2020, ESNext). For modern browsers: ES2020+. For Node.js 18+: ES2022.module- module system: commonjs (Node.js), esm/esnext (bundlers like Vite/Webpack), node16/nodenext (new standard for Node.js with ESM).strict- enables a set of strict type checks (noImplicitAny, strictNullChecks etc.) - always recommended!lib- type libraries (DOM, ES2020, WebWorker).moduleResolution- module resolution algorithm: node (classic), bundler (Vite/Webpack), node16 (Node.js ESM).paths- path aliases (e.g. @/components → ./src/components).
Configuration for popular frameworks
React + Vite: target: ES2020, module: ESNext, moduleResolution: bundler, jsx: react-jsx, strict: true.Next.js: extends "@next/typescript" (Next.js provides its own base config), plugins: next.Node.js: target: ES2022, module: node16 or commonjs, moduleResolution: node16, types: node.Angular: target: ES2022, module: ES2022, experimentalDecorators: true, emitDecoratorMetadata: true. The generator selects the appropriate settings after selecting the framework.
strict mode - what does it enable?
Flag"strict": trueenables a set of checks:noImplicitAny- error when type is implicitly any,strictNullChecks- null and undefined treated as separate types,strictFunctionTypes- strict function type checking,strictBindCallApply- bind/call/apply checking,strictPropertyInitialization- classes must initialize all properties,noImplicitThis- this must have an explicit type,alwaysStrict- "use strict" in every file. Strict mode eliminates an entire class of runtime errors - always use it in new projects.
FAQ
How do I start a TypeScript project with tsconfig?
1.npm init -y, 2.npm install typescript --save-dev, 3.npx tsc --init(generates tsconfig.json with default settings and comments), or use our generator for advanced options. 4. Create .ts files and compile:npx tsc. For React/Vite projects:npm create vite@latest myapp -- --template react-ts- ready project with tsconfig.
What is the difference between moduleResolution: node and bundler?
"node" (classic) - emulates the CommonJS Node.js algorithm, searches for a file or index.ts. "bundler" (Vite 5+/TS 5.0+) - newer mode, assumes that the bundler will handle resolving, allows extensions in imports, supports exports field in package.json. "node16/nodenext" - For native ESM in Node.js, requires .js extensions in imports. For Vite/webpack projects: use "bundler". For Node.js with CommonJS: "node". For Node.js with ESM: "node16".