Issue with `Array.isArray` and `ReadonlyArray` in TypeScript

I've just tried to use

Array.isArray

Array.isArray

on a possibly

ReadonlyArray

ReadonlyArray

, and it doesn't behave as expected: https://effect.website/play#320104f0b32b. I've had a look at the implementation and can't see an easy way to fix the types without making

unknown

unknown

ReadonlyArray<unknown>

ReadonlyArray<unknown>

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Issue with `Array.isArray` and `ReadonlyArray` in TypeScript - Effect Community

Issue with `Array.isArray` and `ReadonlyArray` in TypeScript

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Issue with `Array.isArray` and `ReadonlyArray` in TypeScript

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