Convert decimal degree coordinate string formats to a clean array.

parse_decimal_lat_lon_coords.js

/**
 * Latitude and longitude decimal values are bounded by ±90° and ±180° respectively.
 * This will match only that bound, accepting common uses of commas, points, spaces,
 * tabs and degree symbols, returning a clean, standardized latitude and longitude array.
 * @returns [{number}, {number}] Latitude and longitude
 */
const parseDecimalLatLon = string => {
    let isDecimal = /^([-+]?(?:[1-8]?\d(?:(?:.|,){1}\d+)?|90(?:\.0+)?))°?(?:,|;|\t| )+([-+]?(?:180(?:\.0+)?|(?:(?:1[0-7]\d)|(?:[1-9]?\d))(?:(?:\.|\,){1}\d+)?))°?$/
    let match = string.match(isDecimal);   
    
    if (!match) return false;    
    
    let lat = Number(match[1].replace(',', '.'));
    let lon = Number(match[2].replace(',', '.'));
        
    return [lat, lon];
}

/*
This will match:
-34.474963	-58.597759
-34.474963   -58.597759
-34.474963 -58.597759
-34.474963; -58.597759
-34.474963, -58.597759
-34,474963; -58,597759
-34.474963,-58.597759
+90.0000, -127.554334
-90.000, -180.0000
45, 180
-90, -180
+90, +180
45, 179.99999999
38.8897°, -77.0089°

This will NOT match:
-34.474963
45, 180.99999999
-90., -180.
+90.1, -100.111
-91, 123.456
*/

let result = parseDecimalLatLon('-34.474963,-58.597759')
result[0] // -34.474963
result[1] // -58.597759