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https://github.com/vercel-labs/scriptc.git
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Chris Tate
a5675b2279
A static method that a function-local JavaScript class defines at
runtime and a program class inherits (Animal.extend("Dog")) is now
called directly with this bound to the receiver class when it captures
nothing from the factory's scope, so the subclass it builds has a static
base and constructs like Node.
Fixes #938
Co-authored-by: phall <25888173+phall1@users.noreply.github.com>
26 lines
566 B
JavaScript
26 lines
566 B
JavaScript
// A class factory whose classes extend themselves through a static
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// method: `extend` builds a subclass of whichever class it is called on.
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function factory(base, name) {
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const out = class extends base {
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constructor(value) {
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super(value);
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this.kind = name;
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}
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static extend(name2) {
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return factory(this, name2);
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}
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describe() {
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return `${this.kind}:${this.value}`;
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}
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};
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return out;
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}
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class Root {
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constructor(value) {
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this.value = value;
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}
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}
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export function Class(name) {
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return factory(Root, name);
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}
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