Alex Rickabaugh
8155428ba6
In early versions of Angular, it was sometimes necessary to provide a `moduleId` to `@Component` metadata, and the common pattern for doing this was to set `moduleId: module.id`. This relied on the bundler to fill in a value for `module.id`. However, due to the superficial similarity between `Component.moduleId` and `NgModule.id`, many users ended up setting `id: module.id` in their NgModules. This is an anti-pattern that has a few negative effects, including preventing the NgModule from tree-shaking properly. This commit changes the compiler to ignore `id: module.id` in NgModules, and instead provide a warning which suggests removing the line entirely. PR Close #45024
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