feat: format number with locale

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;