An unhandled exception occurred: Class extends value undefined is not a constructor or null
See original GitHub issueTrying to run ng build of my app and I am getting the “An unhandled exception occurred: Class extends value undefined is not a constructor or null” error. Any help would be greatly appreciated. Using latest of webpack-subresource-integrity, latest @angular-devkit\build-angular & latest Typescript.
[error] TypeError: Class extends value undefined is not a constructor or null at Object.<anonymous> (…\ClientApp\node_modules\webpack-subresource-integrity\index.js:38:49) at Module._compile (internal/modules/cjs/loader.js:1063:30) at Object.Module._extensions…js (internal/modules/cjs/loader.js:1092:10) at Module.load (internal/modules/cjs/loader.js:928:32) at Function.Module._load (internal/modules/cjs/loader.js:769:14) at Module.require (internal/modules/cjs/loader.js:952:19) at require (internal/modules/cjs/helpers.js:88:18) at Object.<anonymous> (…I\ClientApp\node_modules@angular-devkit\build-angular\src\webpack\configs\common.js:38:41) at Module._compile (internal/modules/cjs/loader.js:1063:30) at Object.Module._extensions…js (internal/modules/cjs/loader.js:1092:10) at Module.load (internal/modules/cjs/loader.js:928:32) at Function.Module._load (internal/modules/cjs/loader.js:769:14) at Module.require (internal/modules/cjs/loader.js:952:19) at require (internal/modules/cjs/helpers.js:88:18) at Object.<anonymous> (…\ClientApp\node_modules@angular-devkit\build-angular\src\webpack\configs\index.js:21:14) at Module._compile (internal/modules/cjs/loader.js:1063:30)
node_modules\webpack-subresource-integrity\index.js:38:49
class AddLazySriRuntimeModule extends webpack_1.RuntimeModule {
Issue Analytics
- State:
- Created 2 years ago
- Comments:5
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No problem. Your use of storybook forces Webpack to version 4:
That version is incompatible with a number of other dependencies you’ve installed, including the version of our plugin that you’re using (5.1.0).
To fix this, remove storybook or enable Webpack 5 support for storybook, then ensure that you’re using Webpack 5.
I’ll leave this ticket open as a reminder to myself that we should probably print a more helpful error message in this case.
Sorry, you said you were going to leave it open.