Logic to sort diagnostics by cost doesn't work because of async processing

Ninguém assumiu esta issue ainda.

I found some logic in diagnostics/init.lua that doesn't work as expected: https://github.com/LuaLS/lua-language-server/blob/87abc4245f2a24e1cc35851b6464af9588934286/script/core/diagnostics/init.lua#L158 tries to sort diagnostics by cost to run cheap diags first.

However, the code to measure to runtime at https://github.com/LuaLS/lua-language-server/blob/87abc4245f2a24e1cc35851b6464af9588934286/script/core/diagnostics/init.lua#L180 does to by calling os.clock() before and after invoking a given diagnostic.

This doesn't work if the diagnostic yields during execution, and most diagnostics do exactly that via `await.delay()`. The end result is that the order is pretty much random (which I confirmed by looking at the diagCost arrays with and without await.delay() enabled)

Comece em script/core/diagnostics/init.lua, na lógica de ordenação por volta da linha 158 e na medição do tempo de execução por volta da linha 180. Compare os arrays de custo dos diagnósticos com await.delay() habilitado e desabilitado para reproduzir o problema. Está concluído quando os diagnósticos são ordenados por um custo medido significativo mesmo quando a execução do diagnóstico produz um yield.

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