jsii-srcmak

jsii-srcmak

Generates jsii source files for multiple languages from TypeScript.

Usage

This package can be either used as a library or through a CLI.

The library entry point is the srcmak function:

import { srcmak } from 'jsii-srcmak';
await srcmak(srcdir[, options]);

The CLI is jsii-srcmak:

$ jsii-srcmak srcdir [OPTIONS]

The srcdir argument points to a directory tree that includes TypeScript files which will be translated through jsii to one of the supported languages.

Compile only

If called with no additional arguments, srcmak will only jsii-compile the source. If compilation fails, it will throw an error. This is a nice way to check if generated typescript code is jsii-compatible:

const srcdir = generateSomeTypeScriptCode();

// verify it is jsii-compatible (throws otherwise)
await srcmak(srcdir);

CLI:

$ jsii-srcmak /source/directory

Python Output

To produce a Python module from your source, use the python option:

await srcmak('srcdir', {
  python: {
    outdir: '/path/to/project/root',
    moduleName: 'name.of.python.module'
  }
});

Or the --python-* switches in the CLI:

$ jsii-srcmak /src/dir --python-outdir=dir --python-module-name=module.name

• The outdir/--python-outdir option points to the root directory of your Python project.
• The moduleName/--python-module-name option is the python module name. Dots (.) delimit submodules.

The output directory will include a python module that corresponds to the original module. This code depends on the following python modules:

• jsii

Java Output

To produce a Java module from your source, use the java option:

await srcmak('srcdir', {
  java: {
    outdir: '/path/to/project/root',
    package: 'hello.world'
  }
});

Or the --java-* switches in the CLI:

$ jsii-srcmak /src/dir --java-outdir=dir --java-package=hello.world

• The outdir/--java-outdir option points to the root directory of your Java project.
• The package/--java-package option is the java package name.

The output directory will include a java module that corresponds to the original module. This code depends on the following maven package (should be defined directly or indirectly in the project's pom.xml file):

• jsii

The output directory will also include a tarball [e-mail] that must be bundled in your project.

Entrypoint

The entrypoint option can be used to customize the name of the typescript entrypoint (default is index.ts).

For example, if the code's entry point is under /srcdir/foobar/lib/index.ts then I can specify:

await srcmak('/srcdir', {
  entrypoint: 'foobar/lib/index.ts'
});

Or through the CLI:

$ jsii-srcmak /srcdir --entrypoint lib/main.ts

Dependencies

The deps option can be used to specify a list of node module directories (must have a package.json file) which will be symlinked into the workspace when compiling your code.

This is required if your code references types from other modules.

Use this idiom to resolve a set of modules directories from the calling process:

const modules = [
  '@types/node', // commonly needed
  'foobar'       // a node module in *my* closure
];

const getModuleDir = m =>
  path.dirname(require.resolve(`${m}/package.json`));

await srcmak('srcdir', {
  deps: modules.map(getModuleDir)
});

Or through the CLI:

$ jsii-srcmak /src/dir --dep node_modules/@types/node --dep node_modules/constructs

Contributing

To build this project, you must first generate the package.json:

npx projen

Then you can install your dependencies and build:

yarn install
yarn build

What's with this name?

It's a silly little pun that stems from another pun: jsii has jsii-pacmak which stands for "package maker". That's the tool that takes in a .jsii manifest and produces language-idiomatic packages from it. This tool produces sources from a .jsii manifest. Hence, "source maker". Yeah, it's lame.

License

Distributed under the Apache 2.0 license.