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apps/miniprogram/utils/navigationPolicy.js

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+/**
+ * 小程序页面导航策略：
+ * 1. 底部导航在“页面之间横跳”时优先使用 redirectTo，避免长期堆积页面实例；
+ * 2. 同一路径返回 noop，避免重复触发无意义导航；
+ * 3. 仅当目标不是标准页面路由时，才退回 navigateTo。
+ */
+function resolvePageNavigationMethod(currentPath, targetPath) {
+  const current = String(currentPath || "").trim();
+  const target = String(targetPath || "").trim();
+  if (!target) return "noop";
+  if (current && current === target) return "noop";
+  if (/^\/pages\/.+\/index$/.test(target)) {
+    return "redirectTo";
+  }
+  return "navigateTo";
+}
+
+module.exports = {
+  resolvePageNavigationMethod
+};