TypeScript v7 operator

Look up TypeScript commands, configuration, runtime patterns, and focused operations across compiler configuration, type modeling, narrowing and generics, modules and packages, migrations and declarations. Use when the user wants a concise reference instead of a guided workflow.

Inspect and change TypeScript compiler configuration including target, lib, strictness, module, moduleResolution, paths, emit, incremental builds, and project references. Use when creating or repairing tsconfig files, changing compiler behavior, or resolving configuration inheritance.

Inspect the installed TypeScript runtime, package manager, module mode, project configuration, entry points, generated output, target environments, and checks without changing anything. Use before TypeScript work, when conventions are unknown, or when the user asks what is configured.

Connect TypeScript to build tools, tests, linting, formatting, CI, browser and server runtimes, package boundaries, and deployment artifacts while preserving ownership between layers. Use when TypeScript must cross another project subsystem or behave consistently from development through production.

Migrate JavaScript to TypeScript and author or generate declaration files with allowJs, checkJs, JSDoc, ambient modules, declaration emit, and compatibility tests. Use when incrementally adopting TypeScript, typing an untyped dependency, or publishing declaration files.

Operate TypeScript module resolution, package exports and imports, ESM and CommonJS interop, file extensions, type-only imports, path aliases, and consumer compatibility. Use when imports fail, package types are missing, dual-package behavior diverges, or exports must be published.

Apply TypeScript control-flow narrowing, type predicates, assertion functions, generics, constraints, conditional types, mapped types, and inference without over-generalizing APIs. Use when a union is hard to use, an API needs reusable type relationships, or inference and constraints are incorrect.

Install and configure TypeScript from zero with a project-local toolchain, explicit runtime and module targets, source and output boundaries, baseline checks, and one verified example. Use when a project has no TypeScript setup or the user explicitly asks to initialize it.

Diagnose TypeScript failures involving parsing, types, modules, configuration, async behavior, runtime differences, generated output, tests, integrations, security, and performance without masking the original error. Use when TypeScript code fails a check, behaves differently across environments, or produces unexpected output.

Model TypeScript values and APIs with object types, interfaces, unions, intersections, literals, discriminants, readonly data, utility types, and exact boundary validation. Use when designing a type contract, replacing unsafe assertions, or aligning runtime data with compile-time types.