TypeScript Compiler Options

TypeScript's behavior is highly configurable through compiler options, typically defined in a tsconfig.json file.

Core Options

• target: The version of JavaScript to output (e.g., ESNext, ES2022).
• module: The module system to use (e.g., CommonJS, ESNext, NodeNext).
• lib: A list of library files to include in the compilation (e.g., ["DOM", "ESNext"]).
• strict: Enables a wide range of strong type-checking behaviors.

Strictness Flags

• noImplicitAny: Error on inferred any types.
• strictNullChecks: Forces explicit handling of null and undefined.
• noImplicitReturns: Error when not all code paths in a function return a value.

Output Control

• outDir: The directory where compiled files are placed.
• rootDir: The root directory of input files.
• sourceMap: Generates source map files for debugging.

References

• Source: 00_Raw/typescript-handbook.md
• typescript-moc
• typescript-basics