Function getNodeMatcher

src/languages/getNodeMatcher.ts:23–45

(
  languageId: string,
  scopeType: ScopeType,
  includeSiblings: boolean
)

import { SupportedLanguageId } from "./constants";

export function getNodeMatcher(
  languageId: string,
  scopeType: ScopeType,
  includeSiblings: boolean
): NodeMatcher {
  const matchers = languageMatchers[languageId as SupportedLanguageId];

  if (matchers == null) {
    throw new UnsupportedLanguageError(languageId);
  }

  const matcher = matchers[scopeType];

  if (matcher == null) {
    return notSupported;
  }

  if (includeSiblings) {
    return matcherIncludeSiblings(matcher);
  }

  return matcher;
}

const languageMatchers: Record<
  SupportedLanguageId,