Type alias MatchingDirection

The correct matching direction of alternatives. This can be either ltr (left to right) or rtl (right to left).

ltr is the matching direction of lookaheads and the default matching direction of JavaScript RegExps. rtl is the matching direction of lookbehinds.

The current matching direction of an element is determined by the closest lookaround (lookahead or lookbehind) ancestor. If the closest lookaround ancestor is a lookahead, the matching direction is ltr. Likewise, if it's a lookbehind, it's rtl. If an element is not a descendant of a lookaround, the default matching direction ltr is assumed.

See

• getMatchingDirection
• invertMatchingDirection
• getMatchingDirectionFromAssertionKind