feat: format number with locale

Author: DaSchTour

README.md

@@ -357,14 +357,19 @@ geolib.sexagesimalToDecimal(`51° 29' 46" N`);
 
 Returns the new value as decimal number.
 
-### `decimalToSexagesimal(value)`
+### `decimalToSexagesimal(value, locale?)`
 
 Converts a decimal coordinate to sexagesimal format
 
 ```js
-geolib.decimalToSexagesimal(51.49611111); // -> 51° 29' 46`
+geolib.decimalToSexagesimal(51.49611111); // -> 51° 29' 46"`
 ```
 
+```js
+geolib.decimalToSexagesimal(51.4062305555556, 'de'); // -> 51° 24' 22,43"
+```
+
+
 Returns the new value as sexagesimal string.
 
 ### `geolib.getLatitude(point, raw = false)`

src/decimalToSexagesimal.ts

@@ -5,35 +5,22 @@ const imprecise = (number: number) => {
 };
 
 // Converts a decimal coordinate value to sexagesimal format
-const decimal2sexagesimal = (decimal: number) => {
+const decimal2sexagesimal = (decimal: number, locale?: string | string[]) => {
  const [pre, post] = decimal.toString().split('.');
 
  const deg = Math.abs(Number(pre));
  const minFull = imprecise(Number('0.' + (post || 0)) * 60);
  const min = Math.floor(minFull);
  const sec = imprecise((minFull % min || 0) * 60);
 
+ const formatter = new Intl.NumberFormat(locale, {minimumIntegerDigits: 2});
+
  // We're limiting minutes and seconds to a maximum of 6/4 decimal places
  // here purely for aesthetical reasons. That results in an inaccuracy of
  // a few millimeters. If you're working for NASA that's possibly not
  // accurate enough for you. For all others that should be fine.
  // Feel free to create an issue on GitHub if not, please.
- return (
- deg +
- '° ' +
- Number(min.toFixed(6))
- .toString()
- .split('.')
- .map((v, i) => (i === 0 ? v.padStart(2, '0') : v))
- .join('.') +
- "' " +
- Number(sec.toFixed(4))
- .toString()
- .split('.')
- .map((v, i) => (i === 0 ? v.padStart(2, '0') : v))
- .join('.') +
- '"'
- );
+ return `${deg}° ${formatter.format(Number(min.toFixed(6)))}' ${formatter.format(Number(sec.toFixed(4)))}"`;
 };
 
 export default decimal2sexagesimal;