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docs: update and edit web-worker page (#36383) 

PR Close #36383
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Judy Bogart 2020-03-11 10:14:10 -07:00 committed by Kara Erickson
parent 24a92472bf
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7
aio/content/guide/web-worker.md
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freeing the main thread to update the user interface.
If you find your application performs a lot of computations, such as generating CAD drawings or doing heavy geometrical calculations, using web workers can help increase your application's performance.
<div class="alert is-helpful>
<div class="alert is-helpful">
The CLI does not support running Angular itself in a web worker.
@ -19,9 +19,6 @@ To add a web worker to an existing project, use the Angular CLI `ng generate` co
You can add a web worker anywhere in your application.
For example, to add a web worker to the root component, `src/app/app.component.ts`, run the following command.
`ng generate web-worker app`.
The command performs the following actions.
- Configures your project to use web workers, if it isn't already.
@ -52,7 +49,7 @@ The command performs the following actions.
After you generate this initial scaffold, you must refactor your code to use the web worker by sending messages to and from the worker.
<div class="alert is-important>
<div class="alert is-important">
Some environments or platforms, such as `@angular/platform-server` used in [Server-side Rendering](guide/universal), don't support web workers. To ensure that your application will work in these environments, you must provide a fallback mechanism to perform the computations that the worker would otherwise perform.