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Let's make our apps fast ⚡

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This error appears in the console when ever i make changes to an exercise file. After the changes, when i go back to the exercise I am not able to...

Hello! I had a question in the Discord channel on whether the experimental trace API exercise should be removed (exercise 7 extra credit 1). Per this link found in the...

video update needed

Hi Kent! I managed to convert this workshop from JavaScript to TypeScript. I tested this myself and it's working as intended. 😊 I'm aware that in different workshops, the TypeScript...

The comparison is not accurate because one side has cpu throttle and the other doesn't. ![image](https://user-images.githubusercontent.com/7297450/145508250-68975a89-e5cc-4ee8-b341-48fbc166e450.png)

video update needed

Videos at https://epicreact.dev/modules/react-performance/react-performance-welcome stuck on loading. There is an error message in the console: ``` POST https://app.egghead.io/graphql 404 GraphQL Error (Code: 404): {"response":{"error":"","status":404},"request":{"query":"\n query LessonData($slug: String!) {\n video_resource(slug: $slug) {\n...

Hi all, I read all the suggestions, and also tried: `npm run build --profile` But it goes to infinite loop: `> build > cd ./playground && npm run build --profile...

cannot reproduce

Every test gives the error: `internals.injectProfilingHooks is not a function`