fix salary assert method

packages/utils/number.mjs

@@ -0,0 +1,16 @@
+export function hasIntersection(interval1, interval2) {
+    // 通用函数：将区间标准化，null转换为对应的无穷大
+    const normalizeInterval = (interval) => {
+        const [start, end] = interval;
+        return [
+            [null, undefined].includes(start) ? -Infinity : start,
+            [null, undefined].includes(end) ? Infinity : end
+        ];
+    };
+    
+    const [norm1Start, norm1End] = normalizeInterval(interval1);
+    const [norm2Start, norm2End] = normalizeInterval(interval2);
+    
+    // 判断交集
+    return Math.max(norm1Start, norm2Start) <= Math.min(norm1End, norm2End);
+}