webpack - 运行命令 webpack 时出现错误 Class extends value undefined is not a contructor or null at Object. 使用 webpack 4

Question

我正在使用 webpack 4 并最终修复了我所知道的 cli 部分，但是现在当我运行时，我在webpack下面得到了这个错误。

这是堆栈跟踪：

TypeError: Class extends value undefined is not a constructor or null
    at Object.<anonymous> (/home/tbaustin/Turbo/portfolio/node_modules/webpack/lib/MainTemplate.js:33:45)
    at Module._compile (/home/tbaustin/Turbo/portfolio/node_modules/v8-compile-cache/v8-compile-cache.js:178:30)
    at Object.Module._extensions..js (module.js:673:10)
    at Module.load (module.js:575:32)
    at tryModuleLoad (module.js:515:12)
    at Function.Module._load (module.js:507:3)
    at Module.require (module.js:606:17)
    at require (/home/tbaustin/Turbo/portfolio/node_modules/v8-compile-cache/v8-compile-cache.js:159:20)
    at Object.<anonymous> (/home/tbaustin/Turbo/portfolio/node_modules/webpack/lib/Compilation.js:21:22)
    at Module._compile (/home/tbaustin/Turbo/portfolio/node_modules/v8-compile-cache/v8-compile-cache.js:178:30)
    at Object.Module._extensions..js (module.js:673:10)
    at Module.load (module.js:575:32)
    at tryModuleLoad (module.js:515:12)
    at Function.Module._load (module.js:507:3)
    at Module.require (module.js:606:17)
    at require (/home/tbaustin/Turbo/portfolio/node_modules/v8-compile-cache/v8-compile-cache.js:159:20)
    at Object.<anonymous> (/home/tbaustin/Turbo/portfolio/node_modules/webpack/lib/Compiler.js:16:21)
    at Module._compile (/home/tbaustin/Turbo/portfolio/node_modules/v8-compile-cache/v8-compile-cache.js:178:30)
    at Object.Module._extensions..js (module.js:673:10)
    at Module.load (module.js:575:32)
    at tryModuleLoad (module.js:515:12)
    at Function.Module._load (module.js:507:3)
    at Module.require (module.js:606:17)
    at require (/home/tbaustin/Turbo/portfolio/node_modules/v8-compile-cache/v8-compile-cache.js:159:20)
    at Object.<anonymous> (/home/tbaustin/Turbo/portfolio/node_modules/webpack/lib/webpack.js:7:18)
    at Module._compile (/home/tbaustin/Turbo/portfolio/node_modules/v8-compile-cache/v8-compile-cache.js:178:30)
    at Object.Module._extensions..js (module.js:673:10)
    at Module.load (module.js:575:32)
    at tryModuleLoad (module.js:515:12)
    at Function.Module._load (module.js:507:3)