--all | Show all compiler options |
--generateTrace | Generates an event trace and a list of types |
--help | Gives local information for help on the CLI |
--init | Initializes a TypeScript project and creates a tsconfig.json file |
--listFilesOnly | Print names of files that are part of the compilation and then stop processing |
--locale | Set the language of the messaging from TypeScript. This does not affect emit |
--project <path> | Compile the project given the path to its configuration file, or to a folder with a tsconfig.json |
--showConfig | Print the final configuration instead of building |
--version | Print the compiler's version |
--build | Build one or more projects and their dependencies, if out of date |
--clean | Delete the outputs of all projects |
--dry | Show what would be built (or deleted, if specified with '--clean') |
--force | Build all projects, including those that appear to be up to date |
--verbose | Enable verbose logging |
--excludeDirectories <dir...> | Remove a list of directories from the watch process |
--excludeFiles <files...> | Remove a list of files from the watch mode's processing |
--fallbackPolling <approach> | Specify what approach the watcher should use if the system runs out of native file watchers |
--synchronousWatchDirectory | Synchronously call callbacks and update the state of directory watchers on platforms that don`t support recursive watching natively |
--watch | Watch input files |
--watchDirectory <approach> | Specify how directories are watched on systems that lack recursive file-watching functionality |
--watchFile <approach> | Specify how the TypeScript watch mode works |
--allowJs | Allow JavaScript files to be a part of your program. Use the checkJS option to get errors from these files |
--allowSyntheticDefaultImports | Allow 'import x from y' when a module doesn't have a default export |
--allowUmdGlobalAccess | Allow accessing UMD globals from modules |
--allowUnreachableCode | Disable error reporting for unreachable code |
--allowUnusedLabels | Disable error reporting for unused label |
--alwaysStrict | Ensure 'use strict' is always emitted |
--assumeChangesOnlyAffectDirectDependencies | Have recompiles in projects that use incremental and watch mode assume that changes within a file will only affect files directly depending on it |
--baseUrl <directory> | Specify the base directory to resolve non-relative module names |
--checkJs | Enable error reporting in type-checked JavaScript files |
--composite | Enable constraints that allow a TypeScript project to be used with project references |
--declaration | Generate .d.ts files from TypeScript and JavaScript files in your project |
--declarationDir <string> | Specify the output directory for generated declaration files |
--declarationMap | Create sourcemaps for d.ts files |
--diagnostics | Output compiler performance information after building |
--disableReferencedProjectLoad | Reduce the number of projects loaded automatically by TypeScript |
--disableSizeLimit | Remove the 20mb cap on total source code size for JavaScript files in the TypeScript language server |
--disableSolutionSearching | Opt a project out of multi-project reference checking when editing |
--disableSourceOfProjectReferenceRedirect | Disable preferring source files instead of declaration files when referencing composite projects |
--downlevelIteration | Emit more compliant, but verbose and less performant JavaScript for iteration |
--emitBOM | Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files |
--emitDeclarationOnly | Only output d.ts files and not JavaScript files |
--emitDecoratorMetadata | Emit design-type metadata for decorated declarations in source files |
--esModuleInterop | Emit additional JavaScript to ease support for importing CommonJS modules. This enables allowSyntheticDefaultImports for type compatibility |
--exactOptionalPropertyTypes | Differentiate between undefined and not present when type checking |
--experimentalDecorators | Enable experimental support for TC39 stage 2 draft decorators |
--explainFiles | Print files read during the compilation including why it was included |
--extendedDiagnostics | Output more detailed compiler performance information after building |
--forceConsistentCasingInFileNames | Ensure that casing is correct in imports |
--generateCpuProfile | Emit a v8 CPU profile of the compiler run for debugging |
--importHelpers | Allow importing helper functions from tslib once per project, instead of including them per-file |
--importsNotUsedAsValues <type> | Specify emit/checking behavior for imports that are only used for types |
--incremental | Save .tsbuildinfo files to allow for incremental compilation of projects |
--inlineSourceMap | Include sourcemap files inside the emitted JavaScript |
--inlineSources | Include source code in the sourcemaps inside the emitted JavaScript |
--isolatedModules | Ensure that each file can be safely transpiled without relying on other imports |
--jsx <type> | Specify what JSX code is generated |
--jsxFactory <JSX factory function> | Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h' |
--jsxFragmentFactory <JSX fragment> | Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment' |
--jsxImportSource <string> | Specify module specifier used to import the JSX factory functions when using jsx: react-jsx* |
--keyofStringsOnly | Make keyof only return strings instead of string, numbers or symbols. Legacy option |
--lib <list...> | Specify a set of bundled library declaration files that describe the target runtime environment |
--listEmittedFiles | Print the names of emitted files after a compilation |
--listFiles | Print all of the files read during the compilation |
--mapRoot <string> | Specify the location where debugger should locate map files instead of generated locations |
--maxNodeModuleJsDepth <number> | Specify the maximum folder depth used for checking JavaScript files from node_modules. Only applicable with allowJs |
--module <module> | Specify what module code is generated |
--moduleResolution <module> | Specify how TypeScript looks up a file from a given module specifier |
--newLine <character> | Set the newline character for emitting files |
--noEmit | Disable emitting file from a compilation |
--noEmitHelpers | Disable generating custom helper functions like __extends in compiled output |
--noEmitOnError | Disable emitting files if any type checking errors are reported |
--noErrorTruncation | Disable truncating types in error messages |
--noFallthroughCasesInSwitch | Enable error reporting for fallthrough cases in switch statements |
--noImplicitAny | Enable error reporting for expressions and declarations with an implied any type |
--noImplicitOverride | Ensure overriding members in derived classes are marked with an override modifier |
--noImplicitReturns | Enable error reporting for codepaths that do not explicitly return in a function |
--noImplicitThis | Enable error reporting when this is given the type any |
--noImplicitUseStrict | Disable adding 'use strict' directives in emitted JavaScript files |
--noLib | Disable including any library files, including the default lib.d.ts |
--noPropertyAccessFromIndexSignature | Enforces using indexed accessors for keys declared using an indexed type |
--noResolve | Disallow imports, requires or <reference>s from expanding the number of files TypeScript should add to a project |
--noStrictGenericChecks | Disable strict checking of generic signatures in function types |
--noUncheckedIndexedAccess | Add undefined to a type when accessed using an index |
--noUnusedLocals | Enable error reporting when a local variables aren't read |
--noUnusedParameters | Raise an error when a function parameter isn't read |
--outDir <string> | Specify an output folder for all emitted files |
--outFile <string> | Specify a file that bundles all outputs into one JavaScript file. If declaration is true, also designates a file that bundles all .d.ts output |
--paths <object> | Specify a set of entries that re-map imports to additional lookup locations |
--plugins <plugins...> | Specify a list of language service plugins to include |
--preserveConstEnums | Disable erasing const enum declarations in generated code |
--preserveSymlinks | Disable resolving symlinks to their realpath. This correlates to the same flag in node |
--preserveWatchOutput | Disable wiping the console in watch mode |
--pretty | Enable color and formatting in output to make compiler errors easier to read |
--reactNamespace <object> | Specify the object invoked for createElement. This only applies when targeting react JSX emit |
--removeComments | Disable emitting comments |
--resolveJsonModule | Enable importing .json files |
--rootDir <string> | Specify the root folder within your source files |
--rootDirs <string...> | Allow multiple folders to be treated as one when resolving modules |
--skipDefaultLibCheck | Skip type checking .d.ts files that are included with TypeScript |
--skipLibCheck | Skip type checking all .d.ts files |
--sourceMap | Create source map files for emitted JavaScript files |
--sourceRoot <string> | Specify the root path for debuggers to find the reference source code |
--strict | Enable all strict type checking options |
--strictBindCallApply | Check that the arguments for bind, call, and apply methods match the original function |
--strictFunctionTypes | When assigning functions, check to ensure parameters and the return values are subtype-compatible |
--strictNullChecks | When type checking, take into account null and undefined |
--strictPropertyInitialization | Check for class properties that are declared but not set in the constructor |
--stripInternal | Disable emitting declarations that have @internal in their JSDoc comments |
--suppressExcessPropertyErrors | Disable reporting of excess property errors during the creation of object literals |
--suppressImplicitAnyIndexErrors | Suppress noImplicitAny errors when indexing objects that lack index signatures |
--target <arg> | Set the JavaScript language version for emitted JavaScript and include compatible library declarations |
--traceResolution | Log paths used during the moduleResolution process |
--tsBuildInfoFile <string> | Specify the folder for .tsbuildinfo incremental compilation files |
--typeRoots <folders...> | Specify multiple folders that act like ./node_modules/@types |
--types <package names...> | Specify type package names to be included without being referenced in a source file |
--useDefineForClassFields | Emit ECMAScript-standard-compliant class fields |
--useUnknownInCatchVariables | Default catch clause variables as unknown instead of any |