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TypeScript's number type is a lie (bluepnume.medium.com)
4 points by bluepnume 16 days ago
2 comments
glkindlmann 16 days ago
Supporting operator overloading is part of the linked TS issue [1]. But I'm more curious: why did operator overloading in ES6 itself [2] die?

[1] https://github.com/microsoft/TypeScript/issues/42218

[2] https://github.com/tc39/proposal-operator-overloading

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bluepnume 16 days ago
Probably if nothing else, impossible to have it perform well without static typing?
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glkindlmann 16 days ago
But traversing the prototype chain (to figure out method dispatch) is also potentially slow without static typing, and we're managing that ok, no?
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bluepnume 15 days ago
True enough. Although personally I prefer to just use regular functions rather than big inheritance chains.
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newaccountman2 16 days ago
Am I incorrect in thinking this is not a TypeScript problem, but a problem most languages have, and that TypeScript is one of the few with a neat little solution?
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bluepnume 16 days ago
In most languages you could probably solve this problem with a class. But wrapping all your numbers in a class with runtime consequences, just for a bit of extra type safety, feels quite extreme.
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