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Simple Method to Calculate the Hash of a file in Javascript using HTML5 API
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Cheng Lou - "On the Spectrum of Abstraction" summarized transcript (React Europe 2016)
Cheng Lou - On the Spectrum of Abstraction
Cheng Lou, a former member of the React team, gave an incredible talk at React Europe 2016 entitled "On the Spectrum of Abstraction". That talk is available for viewing here: https://www.youtube.com/watch?v=mVVNJKv9esE
It's only a half-hour, but it is mind-blowing. It's worth re-watching two or three times, to let the ideas sink in.
I just rewatched the talk for some research, and wrote down a summary that's semi-transcript-ish. I didn't see any other transcripts for this talk, other than the auto-generated closed captions, so I wanted to share for reference.
In JavaScript, all binding declarations are instantiated when control flow enters the scope in which they appear. Legacy var and function declarations allow access to those bindings before the actual declaration, with a "value" of undefined. That legacy behavior is known as "hoisting". let and const binding declarations are also instantiated when control flow enters the scope in which they appear, with access prevented until the actual declaration is reached; this is called the Temporal Dead Zone. The TDZ exists to prevent the sort of bugs that legacy hoisting can create.
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Normally, when recursively evaluating the depth of a deep tree, it will result in stack overflow error.
But, by using async/await, it keeps its stack on the heap, and evaluates correct result without error.
The package that linked you here is now pure ESM. It cannot be require()'d from CommonJS.
This means you have the following choices:
Use ESM yourself. (preferred)
Use import foo from 'foo' instead of const foo = require('foo') to import the package. You also need to put "type": "module" in your package.json and more. Follow the below guide.
If the package is used in an async context, you could use await import(…) from CommonJS instead of require(…).
Stay on the existing version of the package until you can move to ESM.
A React Hook to determine if a tab of your application is the "leader" using BroadcastChannel and leader election
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