Without types, I would have to test more cases for all the functions that are supposed to work only…
Ricardo Sánchez
51

> Without types, I would have to test more cases for all the functions that are supposed to work only with numbers, example: add(x,y)

> Since everything will be a valid and correct input for that function: add({}, “a”), add([1,2,4], undefined)…

I don’t do much of either of those things, and guess what? My apps are still rock solid in production.

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