NineAI 2.4.2

dist/common/utils/selectKeyWithWeight.js

@@ -0,0 +1,17 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.selectKeyWithWeight = void 0;
+function selectKeyWithWeight(data) {
+    if (data.length === 0)
+        return undefined;
+    const totalWeight = data.reduce((sum, item) => sum + item.weight, 0);
+    let randomWeight = Math.random() * totalWeight;
+    for (const item of data) {
+        randomWeight -= item.weight;
+        if (randomWeight < 0) {
+            return item;
+        }
+    }
+    return data[data.length - 1];
+}
+exports.selectKeyWithWeight = selectKeyWithWeight;