43ecf8a77b
`@angular/platform-server` provides the foundation for rendering an Angular app on the server. In order to achieve that, it uses a server-side DOM implementation (currently [domino][1]). For rendering on the server to work as closely as possible to running the app on the browser, we need to make DOM globals (such as `Element`, `HTMLElement`, etc.), which are normally provided by the browser, available as globals on the server as well. Currently, `@angular/platform-server` achieves this by extending the `global` object with the DOM implementation provided by `domino`. This assignment happens in the [setDomTypes()][2] function, which is [called in a `PLATFORM_INITIALIZER`][3]. While this works in most cases, there are some scenarios where the DOM globals are needed sooner (i.e. before initializing the platform). See, for example, #24551 and #39950 for more details on such issues. This commit provides a way to solve this problem by exposing a side-effect-ful entry-point (`@angular/platform-server/init`), that shims the `global` object with DOM globals. People will be able to import this entry-point in their server-rendered apps before bootstrapping the app (for example, in their `main.server.ts` file). (See also [#39950 (comment)][4].) In a future update, the [`universal` schematics][5] will include such an import by default in newly generated projects. [1]: https://www.npmjs.com/package/domino [2]: https://github.com/angular/angular/blob/0fc8466f1be392917e0c/packages/platform-server/src/domino_adapter.ts#L17-L21 [3]: https://github.com/angular/angular/blob/0fc8466f1be392917e0c/packages/platform-server/src/server.ts#L33 [4]: https://github.com/angular/angular/issues/39950#issuecomment-747598403 [5]: https://github.com/angular/angular-cli/blob/cc51432661eb4ab4b6a3/packages/schematics/angular/universal PR Close #40559
26 lines
612 B
Python
26 lines
612 B
Python
load("//tools:defaults.bzl", "jasmine_node_test", "ts_library")
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load("//tools/circular_dependency_test:index.bzl", "circular_dependency_test")
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circular_dependency_test(
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name = "circular_deps_test",
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entry_point = "angular/packages/platform-server/init/index.js",
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deps = ["//packages/platform-server/init"],
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)
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ts_library(
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name = "test_lib",
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testonly = True,
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srcs = glob(["**/*.ts"]),
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deps = [
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"//packages/platform-server/init",
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],
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)
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jasmine_node_test(
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name = "test",
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bootstrap = ["//tools/testing:node_no_angular_es5"],
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deps = [
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":test_lib",
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],
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)
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