arpnetworking / sbt-typescript   0.4.5

Apache License 2.0 GitHub

A plugin for SBT that uses sbt-web to compile typescript resources.

Scala versions: 2.12
sbt plugins: 1.0


License: Apache 2 Travis Build Maven Artifact

Allows TypeScript to be used from within sbt. Leverages the functionality of com.typesafe.sbt:js-engine to run the typescript compiler.

To use this plugin use the addSbtPlugin command within your project's plugins.sbt (or as a global setting) i.e.:

addSbtPlugin("com.arpnetworking" % "sbt-typescript" % "0.4.4")
resolvers += Resolver.typesafeRepo("releases")

You will also need to enable the SbtWeb plugin in your project.

The options provided mimic the arguments to the tsc command line compiler (for the versions < 0.3.0).

Option Description
allowJS Allow JavaScript files to be compiled.
declaration Generates corresponding '.d.ts' file.
sourceMap Generates source maps for input files.
sourceRoot Specifies the location where the compiler should locate TypeScript files instead of the source locations on the webserver. (Note this is require if using outFile to compile into a single file)
mapRoot Specifies the location where the compiler should locate map files instead of generated locations.
target ECMA script target version. Should be "ES3" or "ES5" (default).
noImplicitAny Warn on expressions and declarations with an implied "any" type.
moduleKind Specifies module code generation. Should be "" (default), "None", "CommonJS", "AMD", "UMD", "System", "ES6" and "ES2015".
outFile Concatenate and emit output to a single file.
outDir Destination directory for output files.
removeComments Removes comments from the generated source.
jsx Specifices JSX-mode for .tsx files. Should be "None", "Preserve" (default) to generate .jsx or "React" to generate .js files.
experimentalDecorators Experimental decorators support. Set this to true if you have an angular2 project.
emitDecoratorMetadata This will write decorator metadata to your js files. Set this to true if you have an angular2 project.
moduleResolutionKind "NodeJs" or "Classic" module resolution.
typingsFile A file that refers to typings that the build needs. Default None, but would normally be "/typings/index.d.ts"

tsconfig.json support (version >= 0.3.0)

From the version 0.3.0 you can define typescript settings only with a tsconfig.json file. The sbt-typescript will look for a tsconfig.file in the assets directory by default. If there is no file, an error would occur.

By default, all typescript files (*.ts and *.tsx) are included in the compilation and will generate corresponding javascript files. In addition, if source map generation is enabled, the .ts and .tsx files will be copied to the output directory in order to make source maps work. To change this, supply an includeFilter in the TypescriptKeys.typescript task configuration.

The supported sbt settings are:

Option Description
configFile By default the sbt-typescript will look into the assets directory (app/assets/tsconfig.json). If you want sbt-typescript look into the root folder, just set this property to 'yourconfigname.json'
sourceRoot Specifies the location where debugger should locate TypeScript files instead of source locations.

include and exclude, baseUrl properties of tsconfig are not supported.

For including specific files of your project you can write something like:

includeFilter in (Assets, typescript) := GlobFilter("myFile.ts")

You can also set an exclude filter in the same way:

excludeFilter in (Assets,typescript) := GlobFilter("*.d.ts") | GlobFilter("*.spec.ts") | GlobFilter("**/typings")

A note on typescript compiling speed

Sometimes the default engine (Trireme) can be quite slow. If you're experiencing long typescript compile times you can always switch to node.js (remember to install it first) adding this line to your build.sbt file:

JsEngineKeys.engineType := JsEngineKeys.EngineType.Node


The TypeScript version included in sbt-typescript and the Scala version support are as follows.

Version TypesScript Scala
0.4.2 2.6.2 2.12.5
0.4.1 2.6.2 2.12.5
0.3.6 2.6.2 2.10.7, 2.11.12, 2.12.5
0.3.5 2.6.2 2.10.5
0.3.4 2.3.1 2.10.5
0.3.3 2.2.1 2.10.5
0.3.2 2.0.2 2.10.5
0.3.1 2.0.2 2.10.5
0.2.3 2.0.0 2.10.5
0.2.2 2.0.0 2.10.5

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