TS1355

error TS1355: A ‘const’ assertions can only be applied to references to enum members, or string, number, boolean, array, or object literals.

Broken Code ❌

1

const result = (Math.random() < 0.5 ? 0 : 1) as const;

Fixed Code ✔️

You cannot apply a const assertion to the result of a ternary operator. It is necessary to restrict the usage of const assertions to the individual literal expressions:

1

const result = (Math.random() < 0.5 ? (0 as const) : (1 as const));