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A type guard that excludes undefined while preserving null.
imlunahey
@lucid-softworks/is-definedCheck whether a value is anything other than undefined, while narrowing its
TypeScript type. Unlike a non-nullish check, null is considered defined.
import { isDefined } from "@lucid-softworks/is-defined";
const values = [1, undefined, null].filter(isDefined);
// Array<number | null>