Method range

static/katex/katex.mjs:28–36

* Merges two `SourceLocation`s from location providers, given they are * provided in order of appearance. * - Returns the first one's location if only the first is provided. * - Returns a merged range of the first and the last if both are provided * and their lexers match. * - Other

(first, second)

  static range(first, second) {
    if (!second) {
      return first && first.loc;
    } else if (!first || !first.loc || !second.loc || first.loc.lexer !== second.loc.lexer) {
      return null;
    } else {
      return new SourceLocation(first.loc.lexer, first.loc.start, second.loc.end);
    }
  }

}