Swagger Linter outputting line and column numbers

swagger-linter.js

/*jslint node:true, stupid:true*/
module.exports = function (src) {
    'use strict';
    src = require('path').resolve(src);
    var tapi = require('sway'),
        YAML = require('yaml-js'),
        fs = require('fs'),
        file = fs.readFileSync(src).toString();

    function positionRangeForPath(yaml, path, cb) {
        var invalidRange = {
                start: {line: -1, column: -1},
                end: {line: -1, column: -1}
            },
            i = 0,
            ast = YAML.compose(yaml);

        function find(current) {
            var pair, key, value, item;
            if (current.tag === 'tag:yaml.org,2002:map') {
                for (i = 0; i < current.value.length; i += 1) {
                    pair = current.value[i];
                    key = pair[0];
                    value = pair[1];

                    if (key.value === path[0]) {
                        path.shift();
                        return find(value);
                    }
                }
            }
            if (current.tag === 'tag:yaml.org,2002:seq') {
                item = current.value[path[0]];

                if (item && item.tag) {
                    path.shift();
                    return find(item);
                }
            }

            if (path.length) { return cb(invalidRange); }

            return cb({
                start: {
                    line: current.start_mark.line,
                    column: current.start_mark.column
                },
                end: {
                    line: current.end_mark.line,
                    column: current.end_mark.column
                }
            });
        }
        find(ast);
    }

    tapi.create({definition: src})
        .then(function (api) {
            var validation = api.validate(),
                error = validation.errors[0],
                //warning = validation.warnings[0],
                paths;
            if (error) {
                paths = error.path;
                positionRangeForPath(file, paths, function (range) {
                    console.error(
                        error.message
                            + ' in ' + src
                            + ' on line ' + (range.start.line + 1)
                            + ', column ' + range.start.column
                    );
                });
            }
        }, function (err) {
            console.error(err.stack);
        });
};