Using plainnumbers instead of BigInts for GPXids.

src/lib/ids.test.ts

@@ -44,9 +44,9 @@ describe('Checking a multilevel route with optional part', () => {
 
 describe('Checking gpx ids', () => {
   const id = {
-    gpx: 12345678901234567n,
+    gpx: 1234567890123456,
   };
-  const key = 'gpx/12345678901234567';
+  const key = 'gpx/1234567890123456';
   test(', vice', () => {
     const gpx = uri('gpx', id);
     expect(gpx).toBe(key);
@@ -59,10 +59,10 @@ describe('Checking gpx ids', () => {
 
 describe('Checking trk ids', () => {
   const id = {
-    gpx: 12345678901234567n,
+    gpx: 1234567890123456,
     trk: 123456,
   };
-  const key = 'gpx/12345678901234567/2trk/123456';
+  const key = 'gpx/1234567890123456/2trk/123456';
   test(', vice', () => {
     const rte = uri('trk', id);
     expect(rte).toBe(key);
@@ -75,11 +75,11 @@ describe('Checking trk ids', () => {
 
 describe('Checking trkseg ids', () => {
   const id = {
-    gpx: 111n,
+    gpx: 111,
     trk: 0,
     trkseg: 3,
   };
-  const key = 'gpx/00000000000000111/2trk/000000/000003';
+  const key = 'gpx/0000000000000111/2trk/000000/000003';
   test(', vice', () => {
     const rte = uri('trkseg', id);
     expect(rte).toBe(key);
@@ -92,12 +92,12 @@ describe('Checking trkseg ids', () => {
 
 describe('Checking trkpt ids', () => {
   const id = {
-    gpx: 25n,
+    gpx: 25,
     trk: 8,
     trkseg: 0,
     trkpt: 155,
   };
-  const key = 'gpx/00000000000000025/2trk/000008/000000/000155';
+  const key = 'gpx/0000000000000025/2trk/000008/000000/000155';
   test(', vice', () => {
     const rte = uri('trkpt', id);
     expect(rte).toBe(key);

src/lib/ids.ts

@@ -15,7 +15,7 @@ const bigIntType = (n: number) => {
 };
 
 const coding = {
-  gpx: bigIntType(17),
+  gpx: integerType(16),
   wpt: integerType(6),
   rte: integerType(6),
   rtept: integerType(6),
@@ -43,3 +43,8 @@ const uri = (type: RouteKey, param: any) => {
 };
 
 export default uri;
+
+const minDate = -8640000000000000;
+const halfMinDate = minDate / 2;
+
+export const intToGpxId = (i: number) => Math.round(i / 2) - halfMinDate;

src/lib/types.d.ts

@@ -1,34 +1,34 @@
 interface IdGpx {
-  gpx: BigInt;
+  gpx: number;
 }
 
 interface IdTrk {
-  gpx: BigInt;
+  gpx: number;
   trk: number;
 }
 interface IdTrkseg {
-  gpx: BigInt;
+  gpx: number;
   trk: number;
   trkseg: number;
 }
 interface IdTrkpt {
-  gpx: BigInt;
+  gpx: number;
   trk: number;
   trkseg: number;
   trkpt: number;
 }
 interface IdWpt {
-  gpx: BigInt;
+  gpx: number;
   wpt: number;
 }
 
 interface IdRte {
-  gpx: BigInt;
+  gpx: number;
   rte: number;
 }
 
 interface IdRtept {
-  gpx: BigInt;
+  gpx: number;
   rte: number;
   rtept: number;
 }