function detectGeoCSV(buf) {
    var lines = buf.toString()
        .split(/\r\n|\r|\n/g)
        .filter(function(line) {
            return line !== '';
        });

    return lines.length > 0 &&
        // if the CSV file begins with {"type":, it's more likely
        // a GeoJSON file
        !lines[0].substring(0, 50).match(/^\s*\{\s*"type"\s*:/) &&
        detectGeometryField(lines[0]
            .split(detectSeparator(lines[0]))
            .map(function(header) {
                return header.replace(/"/g, '');
            }));

}
function detectGeoCSV(buf) {
    var lines = buf.toString()
        .split(/\r\n|\r|\n/g)
        .filter(function(line) {
            return line !== '';
        });

    return lines.length > 0 &&
        
        
        !lines[0].substring(0, 50).match(/^\s*\{\s*"type"\s*:/) &&
        detectGeometryField(lines[0]
            .split(detectSeparator(lines[0]))
            .map(function(header) {
                return header.replace(/"/g, '');
            }));

}
function detectGeoCSV ( buf ) { var lines = buf . toString ( ) . split ( / \r\n|\r|\n / g ) . filter ( function ( line ) { return line !== '' ; } ) ; return lines . length > 0 && // if the CSV file begins with {"type":, it's more likely // a GeoJSON file ! lines [ 0 ] . substring ( 0 , 50 ) . match ( / ^\s*\{\s*"type"\s*: / ) && detectGeometryField ( lines [ 0 ] . split ( detectSeparator ( lines [ 0 ] ) ) . map ( function ( header ) { return header . replace ( / " / g , '' ) ; } ) ) ; }
Determine whether an input is a CSV file that could be
put on a map: that it has geographical information
that amounts to points or geography.
@param {string|Buffer} buf input, an upload that could be any format
@returns {boolean} whether the content is or is not geographic
@example
var detect = require('@mapbox/detect-geocsv');
var buffer = fs.readFileSync('path/to/data/file.csv');
var isgeocsv = detect(buffer);
assert.ok(isgeocsv);
Determine whether an input is a CSV file that could be put on a map : that it has geographical information that amounts to points or geography .