[glkindlmann]

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

[bluepnume]

Probably if nothing else, impossible to have it perform well without static typing?

[glkindlmann]

But traversing the prototype chain (to figure out method dispatch) is also potentially slow without static typing, and we're managing that ok, no?

[bluepnume]

True enough. Although personally I prefer to just use regular functions rather than big inheritance chains.