Configure TypeScript via tsconfig.json with compiler options like target (JS version), module (module system), strict (type checking level), and include/exclude for files. Key settings include paths for aliases, jsx for React, and lib for available types.
tsconfig.json Sections:
Important Options:
target: Output JS versionmodule: Module systemstrict: Enable all strict checksesModuleInterop: CommonJS/ES module interopjsx: React JSX handlingpaths: Module aliasesoutDir: Output directory{
"compilerOptions": {
// Output settings
"target": "ES2020",
"module": "ESNext",
"moduleResolution": "bundler",
"lib": ["ES2020", "DOM", "DOM.Iterable"],
// Strict type checking
"strict": true,
"noImplicitAny": true,
"strictNullChecks": true,
"noUnusedLocals": true,
"noUnusedParameters": true,
// Module interop
"esModuleInterop": true,
"allowSyntheticDefaultImports": true,
"isolatedModules": true,
// React
"jsx": "react-jsx",
// Path aliases
"baseUrl": ".",
"paths": {
"@/*": ["src/*"],
"@components/*": ["src/components/*"]
},
// Other
"skipLibCheck": true,
"resolveJsonModule": true,
"declaration": true,
"outDir": "dist"
},
"include": ["src/**/*"],
"exclude": ["node_modules", "dist"]
}