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最近我将 Angular 应用程序升级到 12 版本，ng serve 和 ng build 工作正常。

Pakage json for custom webpack
 "@angular-builders/custom-webpack": "^12.0.0-beta.0",
"devDependencies": {
"@angular-devkit/build-angular": "~12.0.0"
}

将代码移动到 prod 后，出现如下运行时错误，很难找出根本原因

Uncaught TypeError: i is not a function
    at Object.12966 (main-es2015.18bf0e6d3748c0de495c.js:1)
    at a (bootstrap:19)
    at Object.6273 (main-es2015.18bf0e6d3748c0de495c.js:1)
    at a (bootstrap:19)
    at Object.41802 (main-es2015.18bf0e6d3748c0de495c.js:1)
    at a (bootstrap:19)
    at Object.12256 (main-es2015.18bf0e6d3748c0de495c.js:1)
    at a (bootstrap:19)
    at Object.62097 (main-es2015.18bf0e6d3748c0de495c.js:1)
    at a (bootstrap:19)
4

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