JH.Lee

[Bug] Preloader doesn't ensure order of showing or hiding

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### How to reproduce the bug in a custom uploader: ```js uploader: { uploadByFile(file) { return new Promise((resolve, reject) => { // e.g. checking file size, almost synchronous // Pass...

fix: preloader bug

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Closes: #184

### Verify canary release - [X] I verified that the issue exists in the latest Next.js canary release ### Provide environment information Operating System: Platform: darwin Arch: arm64 Version: Darwin...

refactor: remove explicit component types

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Remove most `React.FC` explicit types to: - shorten codes - use pure JSX rather than strong React component type - loose TypeScript coupling

feat(devtools): add stackflow devtools

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- feat(devtools): setup devtools workspace

fix: respect headers and method from request input parameter

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`FetchRequest` is expected to be constucted with only single `Request` object as the first parameter of the constructor. However, `FetchRequest` only extracts `url` from `Request` without `headers` and `method` for...