Function parseContextualModifier

test/fixtures/snapshot/typescript.js:32452–32454

(t)

            return finishNode(node, pos);
        }
        function parseContextualModifier(t) {
            return token() === t && tryParse(nextTokenCanFollowModifier);
        }
        function nextTokenIsOnSameLineAndCanFollowModifier() {
            nextToken();
            if (scanner.hasPrecedingLineBreak()) {