Why does TypeScript in my NestJS environment only infer the return type of Array.prototype.find as T, instead of T | undefined as specified?
Is there a way to make TypeScript automatically recognize that find should return T | undefined?
Why does TypeScript in my NestJS environment only infer the return type of Array.prototype.find as T, instead of T | undefined as specified?
Is there a way to make TypeScript automatically recognize that find should return T | undefined?
For a more comprehensive understanding, consider exploring the strictNullChecks compiler option: https://www.typescriptlang.org/tsconfig#strictNullChecks
By setting strictNullChecks to true, null and undefined are treated as distinct types in TypeScript. This helps prevent unexpected errors during runtime.
On the other hand, when strictNullChecks is false, these values are essentially overlooked by the language, potentially leading to runtime issues.
Does this meet your requirements?
let selectedTask: Task | undefined = this.tasks.find((task) => task.id === id);
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