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TsConfig Settings

Compiler Options​

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Always use strict

noUncheckedIndexedAccess​

When enabled, accessing someNumbers[i] gives us a number | undefined, not a number. We must check for undefined whenever we access an array element by index. Each team must decide whether the added safety is worth the extra checks.

Questions​

Which engineering decision related to this topic has the highest switching cost once made — and how do you make it well with incomplete information?

  • At what scale or complexity level does the right answer to this topic change significantly?
  • How does the introduction of AI-native workflows change the conventional wisdom about this technology?
  • Which anti-pattern in this area is most commonly introduced by developers who know enough to be dangerous but not enough to know what they don't know?