Extract Configuration

ts

type ExtractDescriptor = {
  selector: string;
  value?:
    | string // attribute name
    | ((el: Element) => any)
    | Record<string, ExtractDescriptor>;
};
type ExtractConfig = Record<string, ExtractDescriptor | [ExtractDescriptor]>;

selector: CSS selector
value:
- string: attribute
- fn: custom extractor
- object: nested
- undefined: text

Arrays: wrap descriptor in [ ].