feat(base) - safeIntegerOmitZero (#22244)

* feat(base) - safeIntegerOmitZero

* fix(latoken) - zero ts in tickers

* minor bitget

* parseint

* Update Exchange.ts

* fix linting

---------

Co-authored-by: carlosmiei <[email protected]>

Author: ttodua

ts/src/base/Exchange.ts

@@ -2523,6 +2523,14 @@ export default class Exchange {
         return res === 0;
     }
 
+    safeIntegerOmitZero (obj: object, key: IndexType, defaultValue: Int = undefined): Int {
+        const timestamp = this.safeInteger (obj, key, defaultValue);
+        if (timestamp === undefined || timestamp === 0) {
+            return undefined;
+        }
+        return timestamp;
+    }
+
     afterConstruct () {
         this.createNetworksByIdObject ();
     }

ts/src/bitget.ts

@@ -2632,11 +2632,7 @@ export default class bitget extends Exchange {
         //
         const marketId = this.safeString (ticker, 'symbol');
         const close = this.safeString (ticker, 'lastPr');
-        const timestampString = this.omitZero (this.safeString (ticker, 'ts')); // exchange sometimes provided 0
-        let timestamp = undefined;
-        if (timestampString !== undefined) {
-            timestamp = this.parseToInt (timestampString);
-        }
+        const timestamp = this.safeIntegerOmitZero (ticker, 'ts'); // exchange bitget provided 0
         const change = this.safeString (ticker, 'change24h');
         const open24 = this.safeString (ticker, 'open24');
         const open = this.safeString (ticker, 'open');

ts/src/latoken.ts

@@ -624,7 +624,7 @@ export default class latoken extends Exchange {
         //
         const marketId = this.safeString (ticker, 'symbol');
         const last = this.safeString (ticker, 'lastPrice');
-        const timestamp = this.safeInteger (ticker, 'updateTimestamp');
+        const timestamp = this.safeIntegerOmitZero (ticker, 'updateTimestamp'); // sometimes latoken provided '0' ts from /ticker endpoint
         return this.safeTicker ({
             'symbol': this.safeSymbol (marketId, market),
             'timestamp': timestamp,