Compiler Options

Compiler Options

Option	Shorthand	Description
--declaration	--d	Generates corresponding '.d.ts' file.
--help	--h	Print help message.
--version	--v	Print the compiler's version.
--module	--m	Specify module code generation: 'commonjs', 'amd', 'system'[1], or 'umd'[1].
--project	--p	Compile the project in the given directory. The directory needs to contain a tsconfig.json file to direct compilation. See tsconfig.json documentation for more details.
--target	--t	Specify ECMAScript target version: 'ES3' (default), 'ES5', or 'ES6'[2]
--watch	--w	Run the compiler in watch mode. Watch input files and trigger recompilation on changes.
--charset		The character set of the input files.
--diagnostics		Show diagnostic information.
--emitBOM		Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files.
--emitDecoratorMetadata[1][2]		Emit design-type metadata for decorated declarations in source. See issue #2577 for details.
--listFiles		Print names of files part of the compilation.
--locale		The locale to use to show error messages, e.g. en-us.
--mapRoot		Specifies the location where debugger should locate map files instead of generated locations. Use this flag if the .map files will be located at run-time in a different location than than the .js files. The location specified will be embedded in the sourceMap to direct the debugger where the map files where be located.
--newLine[1]		Specifies the end of line sequence to be used when emitting files: 'CRLF' (dos) or 'LF' (unix)."
--noEmit		Do not emit outputs.
--noEmitOnError		Do not emit outputs if any type checking errors were reported.
--noImplicitAny		Raise error on expressions and declarations with an implied 'any' type.
--noLib		Do not include the default library file (lib.d.ts).
--noResolve		Do not add triple-slash references or module import targets to the list of compiled files.
--out		Concatenate and emit output to single file. The order of concatenation is determined by the list of files passed to the compiler on the command line along with triple-slash references and imports. See output file order documentation for more details.
--outDir		Redirect output structure to the directory.
--preserveConstEnums		Do not erase const enum declarations in generated code. See const enums documentation for more details.
--removeComments		Do not emit comments to output.
--rootDir[1]		Specifies the root directory of input files. Use to control the output directory structure with --outDir.
--separateCompilation[1]		Unconditionally emit imports for unresolved files.
--sourceMap		Generates corresponding '.map' file.
--sourceRoot		Specifies the location where debugger should locate TypeScript files instead of source locations. Use this flag if the sources will be located at run-time in a different location than that at design-time. The location specified will be embedded in the sourceMap to direct the debugger where the source files where be located.
--stripInternal[2]		Do not emit declarations for code that has an @internal annotation.
--suppressImplicitAnyIndexErrors		Suppress --noImplicitAny errors for indexing objects lacking index signatures. See issue #1232 for more details.

^[1] These options will only be available in TypeScript 1.5.

^[2] These options are experimental.

Related

• For tsconfig.json see tsconfig.json
• For Setting the compiler options in MSBuild projects see Setting Compiler Options in MSBuild projects