Function appendIfCommentDirective

test/fixtures/snapshot/typescript.js:11969–11978

(commentDirectives, text, commentDirectiveRegEx, lineStart)

            return token;
        }
        function appendIfCommentDirective(commentDirectives, text, commentDirectiveRegEx, lineStart) {
            var type = getDirectiveFromComment(ts.trimStringStart(text), commentDirectiveRegEx);
            if (type === undefined) {
                return commentDirectives;
            }
            return ts.append(commentDirectives, {
                range: { pos: lineStart, end: pos },
                type: type,
            });
        }
        function getDirectiveFromComment(text, commentDirectiveRegEx) {
            var match = commentDirectiveRegEx.exec(text);
            if (!match) {