perf: switch to set, remove parseFloat in redis

add test to cover float

src/database/redis/sorted.js

@@ -301,7 +301,7 @@ module.exports = function (module) {
 
 		const returnData = [];
 		let done;
-		const seen = Object.create(null);
+		const seen = new Set();
 		do {
 			/* eslint-disable no-await-in-loop */
 			const res = await module.client.zScan(params.key, cursor, { MATCH: params.match, COUNT: 5000 });
@@ -310,11 +310,11 @@ module.exports = function (module) {
 
 			for (let i = 0; i < res.members.length; i ++) {
 				const item = res.members[i];
-				if (!seen[item.value]) {
+				if (!seen.has(item.value)) {
-					seen[item.value] = 1;
+					seen.add(item.value);
 
 					if (params.withScores) {
-						returnData.push({ value: item.value, score: parseFloat(item.score) });
+						returnData.push({ value: item.value, score: item.score });
 					} else {
 						returnData.push(item.value);
 					}

test/database/sorted.js

@@ -93,6 +93,22 @@ NUMERIC)-- WsPn&query[cid]=-1&parentCid=0&selectedCids[]=-1&privilege=topics:rea
 			});
 			assert.strictEqual(data.length, 0);
 		});
+
+		it('should handle floating point scores', async () => {
+			await db.sortedSetAdd('scanzset6', [1.5, 2.5, 3.5, 4.5, 5.5, 6.5], ['aaab{', 'bbbb', 'bbcb', 'ddb', 'dddd', 'adb']);
+			const data = await db.getSortedSetScan({
+				key: 'scanzset6',
+				match: '*b',
+				withScores: true,
+			});
+			data.sort((a, b) => b.score - a.score);
+			assert.deepStrictEqual(data, [
+				{ value: 'adb', score: 6.5 },
+				{ value: 'ddb', score: 4.5 },
+				{ value: 'bbcb', score: 3.5 },
+				{ value: 'bbbb', score: 2.5 },
+			]);
+		});
 	});
 
 	describe('sortedSetAdd()', () => {