6 Implementing Javascript Modules

Warning: the material in this section is unstable and likely to change.

(require (planet dyoo/js-vm:1:10/lang/js-impl/js-impl))

This module allows the definition of modules whose implementations are written in Javascript.

As an example, the following two files provide an implementation of double in Javascript:

#lang planet dyoo/js-vm:1:10/js-impl

(require-js "double.js")

(provide double)

// double.js
EXPORTS['double'] =
new types.PrimProc('double', 1, false, false, function(x) {
return jsnums.multiply(x, 2)});

Any module implemented with (planet dyoo/js-vm:1:10/lang/js-impl/js-impl) will provide bindings that require a Javascript context.

(require (planet dyoo/js-vm:1:10/lang/js-impl/js-conditional))

Any module implemented with (planet dyoo/js-vm:1:10/lang/js-conditional/js-conditional) can run either in a Racket or Javascript context.

1	Quick Start
2	Running js-vm
3	We Scheme
4	Jsworld
5	Images
6	Implementing Javascript Modules
7	Racket to Javascript FFI
8	Base language

6.1	Module Implementation in Javascript
6.2	Conditional Module Implmentation in javascript