HarmonyOS 鸿蒙Next Cannot read properties of undefined (reading 'clear')

发布于 1周前 作者 zlyuanteng 来自 鸿蒙OS

HarmonyOS 鸿蒙Next Cannot read properties of undefined (reading ‘clear’)

编译时一直出现 Cannot read properties of undefined (reading ‘clear’) 的错误，Repair IDE、Clean Project 和 Invalidate Cache 都操作过，还是报错，打开debug 的报错堆栈如下:

  > hvigor ERROR: Error: Cannot read properties of undefined (reading ‘clear’) COMPILE RESULT:FAIL {ERROR:1} at runArkPack (/Applications/DevEco-Studio.app/Contents/tools/hvigor/hvigor-ohos-plugin/node_modules/@ohos/hvigor-arkts-compose/dist/src/arkts-pack.js:1:5395) TypeError: Cannot read properties of undefined (reading ‘clear’) at Object.cleanUp (/Applications/DevEco-Studio.app/Contents/tools/hvigor/hvigor-ohos-plugin/node_modules/@ohos/hvigor-arkts-compose/dist/src/plugins/node-resolve/index.js:1:8776) at /Applications/DevEco-Studio.app/Contents/tools/hvigor/hvigor-ohos-plugin/node_modules/@ohos/hvigor-arkts-base/node_modules/rollup/dist/shared/rollup.js:24555:40 at async Promise.all (index 0) at async PluginDriver.hookParallel (/Applications/DevEco-Studio.app/Contents/tools/hvigor/hvigor-ohos-plugin/node_modules/@ohos/hvigor-arkts-base/node_modules/rollup/dist/shared/rollup.js:24483:9) at async /Applications/DevEco-Studio.app/Contents/tools/hvigor/hvigor-ohos-plugin/node_modules/@ohos/hvigor-arkts-base/node_modules/rollup/dist/shared/rollup.js:25694:17 at async catchUnfinishedHookActions (/Applications/DevEco-Studio.app/Contents/tools/hvigor/hvigor-ohos-plugin/node_modules/@ohos/hvigor-arkts-base/node_modules/rollup/dist/shared/rollup.js:24917:20) at async rollupInternal (/Applications/DevEco-Studio.app/Contents/tools/hvigor/hvigor-ohos-plugin/node_modules/@ohos/hvigor-arkts-base/node_modules/rollup/dist/shared/rollup.js:25666:5) at async build (/Applications/DevEco-Studio.app/Contents/tools/hvigor/hvigor-ohos-plugin/node_modules/@ohos/hvigor-arkts-base/dist/src/build.js:1:3315) at async collectCompilePerf (/Applications/DevEco-Studio.app/Contents/tools/hvigor/hvigor-ohos-plugin/node_modules/@ohos/hvigor-arkts-compose/dist/src/arkts-pack.js:1:6119) at async runArkPack (/Applications/DevEco-Studio.app/Contents/tools/hvigor/hvigor-ohos-plugin/node_modules/@ohos/hvigor-arkts-compose/dist/src/arkts-pack.js:1:4865) > hvigor ERROR: BUILD FAILED in 24 s 932 ms > hvigor WARN: Can not getEventById:‘abd603f5-9bc3-4b0e-a046-4c099b4ebf6b’ from MetricCacheService. > hvigor WARN: Can not getEventById:‘f05bad50-f157-4f9a-99a9-a7d86ed0382d’ from MetricCacheService. > hvigor ERROR: Failed :aliwork.vpn.ui:default@CompileResource…

Harmonyos Next教程
1 回复

针对您提到的HarmonyOS鸿蒙Next系统中出现的“Cannot read properties of undefined (reading ‘clear’)”错误，这通常意味着您的代码试图访问一个未定义对象的clear属性。以下是一些可能的原因及检查点：

  1. 对象未正确初始化：确保在调用clear方法之前，相关对象已被正确创建并赋值。

  2. 作用域问题：检查clear方法调用的上下文，确保在当前作用域中对象是可访问的。

  3. 拼写或引用错误：验证对象名称及clear方法名是否拼写正确，且正确引用了所需的库或模块。

  4. 异步代码问题：如果对象是在异步操作中创建或修改的，确保clear方法的调用发生在对象有效创建之后。

  5. API变动：鉴于HarmonyOS处于不断更新中，检查最新的API文档，确认clear方法是否仍属于该对象，或是否有替代方法。

处理此类问题时，建议逐步调试代码，使用console.log等工具检查对象状态。如果问题依旧没法解决请联系官网客服，官网地址是：https://www.itying.com/category-93-b0.html。

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