Could someone demonstrate how to create a custom decorator in Typescript that adds static metadata to the type, allowing for runtime access without needing to instantiate an instance of the class? I'm looking for something similar to __annotations__ in Angular.
Update - Please refer to the image below. How can I develop my own decorator factory that works on the type itself rather than just modifying instances?
After some exploration, I have figured this out. Coming from a background in .net, I failed to realize that the target/class can be treated like any other javascript object. The constructor appears to be just another specialized method on the object.
export function MyDecorator(metadata: any) {
return (target) => {
if (!target[`__my_annotations__`]) {
target[`__my_annotations__`] = {};
}
target[`__my_annotations__`].metadata = metadata;
return target;
};
}
This solution works well for me, and I hope it helps someone else save time on this issue.
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