NonUndefined's example is incorrect.

[tyankatsu0105]

Description

/**
 * NonUndefined
 * @desc Exclude undefined from set `A`
 * @example
 *   // Expect: "string | null"
 *   SymmetricDifference<string | null | undefined>;
 */
export type NonUndefined<A> = A extends undefined ? never : A;

@example is not correct.

Steps to Reproduce

Expected behavior

/**
 * NonUndefined
 * @desc Exclude undefined from set `A`
 * @example
 *   // Expect: "string | null"
 *   NonUndefined<string | null | undefined>;
 */
export type NonUndefined<A> = A extends undefined ? never : A;

Suggested solution(s)

Project Dependencies

• Utility-Types Version: X.X.X
• TypeScript Version: X.X.X
• tsconfig.json:

Environment (optional)

• Browser and Version: XXX
• OS: XXX
• Node Version: XXX
• Package Manager and Version: XXX