`Local.testAccounts` vs. `noUncheckedIndexAccess`

[Harry Solovay]

With noUncheckedIndexedAccess enabled (best practice), the TS checker errors on the inner destructuring of testAccount elements.

let [{ privateKey, publicKey }] = Local.testAccounts
//   ~~~~~~~~~~~~~~~~~~~~~~~~~
//   ^
//   Property 'privateKey' does not exist on type '{ publicKey: PublicKey; privateKey: PrivateKey; } | undefined'. ts(2339)

Is there a reason not to type the length of Local.testAccounts? We could do so with the TupleN type right here. This would spare the developer of needing to override the checker.

let [{ privateKey, publicKey }] = Local.testAccounts // no TS error, sweet!

[Gregor Mitscha-Baude]

Damn I didn't know noUncheckedIndexAccess. I love it!