ContextJS

Context-oriented Programming (COP) for JavaScript

Example Code

``JS
import { layer, proceed, withLayers } from "https://lively-kernel.org/lively4/ContextJS"

class Foo {
bar() {
return 3
}
}

const L1 = layer("L1")
L1.refineClass(Foo, {
bar() { return proceed() + 4}
})

let o = new Foo()
o.bar() // 3
withLayers([L1], () => o.bar()) // 7
`

Further Functionality

Further functionality can be added via

`JS
import { withoutLayers, Layer } from "https://lively-kernel.org/lively4/ContextJS"
import * as cop from "https://lively-kernel.org/lively4/ContextJS/Layer.js"
`

Global import of ContextJS

If you would like to add the functions and classes exported from the
contetxjs Module (proceed, withLayers etc.) into the window or global
object, so you do not have to enumerate the identifiers in the import statement
and do not need to prefix them with a "namespace", you can write import
"https://lively-kernel.org/lively4/ContextJS/module_import.js"`.