import { CSS_SELECTOR_TYPE, CssSelectorType } from "./types.js";

export const SELECTOR_SEPARATOR = ", ";

// RegExp that will match invalid patterns that can be used in ID attribute.
export const INVALID_ID_RE: RegExp = new RegExp(
  [
    "^$", // empty or not set
    "\\s", // contains whitespace
  ].join("|"),
);

// RegExp that will match invalid patterns that can be used in class attribute.
export const INVALID_CLASS_RE: RegExp = new RegExp(
  [
    "^$", // empty or not set
  ].join("|"),
);

// Order in which a combined selector is constructed.
export const SELECTOR_PATTERN: CssSelectorType[] = [
  CSS_SELECTOR_TYPE.nthoftype,
  CSS_SELECTOR_TYPE.tag,
  CSS_SELECTOR_TYPE.id,
  CSS_SELECTOR_TYPE.class,
  CSS_SELECTOR_TYPE.attribute,
  CSS_SELECTOR_TYPE.nthchild,
];