Warning
This version of class-merger has been deprecated. The source code has been moved to https://github.com/danielFHcode/class-merger-2
Class Merger is a simple one-function library for creating multi inheritance classes, inspired by the "real" class expression mixin method.
To install you can either use npm:
npm i class-mergerOr just download the one file from github.
To include the file in client side js use a script tag:
<body>
<script src="/path/to/classMerger.js" defer></script>
</body>To include the file in node js use require:
// There is no need to import anything but the mergeClasses function, since there is nothing.
const { mergeClasses } = require("class-merger");As mentioned earlier, Class Merger is a one-function library - meaning it only consist of one function.
And that one function is the mergeClasses function, which you can use like so:
class a {
x() {}
}
class b {
y() {}
}
class c extends mergeClasses(a, b) {
z() {}
}
/*
Expected result: A class named c with methods x, y & z.
*/The specialty of using the class expression based mixin method is that you can use built in js inheritance options such as super:
class a {
x() {}
}
class b {
y() {}
}
class c extends mergeClasses(a, b) {
z() {
super.x();
super.y();
}
}
/*
Expected result: A class named c with a working super object containing methods from classes a & b.
*/It's also worth noting you can use this library for extending classes after you create them. You see, because Class Merger uses the class expression based mixin method, when you write:
class a{}
class b{}
class c{}
mergeClasses(a,b,c)What essentially happens is:
class c{}
class b extends c{}
class a extends b{}
// Note that classes b & c aren't actually modified, but rather newly created copies of them are.So, you could use that to your advantage, and do something like this to extend classes after you created them:
class a{}
class b{}
class c{}
a = mergeClasses(
a, /* extends */ b, c
)