[Bug report] 使用setData更新数据时，某些场景会报错：TypeError: Cannot read property 'length' of null

[vivine]

问题描述

使用setData更新数据时，某些场景会报错：TypeError: Cannot read property 'length' of null

如下图：

具体代码关联为：

mpx/packages/core/src/observer/scheduler.js

Lines 96 to 116 in 7ec6526

 export function flushPreFlushCbs (seen, parentJob = null) { 
   if (pendingPreFlushCbs.length) { 
     currentPreFlushParentJob = parentJob 
     activePreFlushCbs = [...new Set(pendingPreFlushCbs)] 
     pendingPreFlushCbs.length = 0 
     if (isDev) seen = seen || new Map() 
     for ( 
       preFlushIndex = 0; 
       preFlushIndex < activePreFlushCbs.length; 
       preFlushIndex++ 
     ) { 
       if (isDev && checkRecursiveUpdates(seen, activePreFlushCbs[preFlushIndex])) continue 
       activePreFlushCbs[preFlushIndex]() 
     } 
     activePreFlushCbs = null 
     preFlushIndex = 0 
     currentPreFlushParentJob = null 
     // recursively flush until it drains 
     flushPreFlushCbs(seen, parentJob) 
   } 
 } 

[Dong Hongping]

已修复，https://github.com/didi/mpx/releases/tag/v2.9.10