import type {GreaterThanOrEqual} from 'type-fest';
type A = GreaterThanOrEqual<1, -5>;
//=> true
type B = GreaterThanOrEqual<1, 1>;
//=> true
type C = GreaterThanOrEqual<1, 5>;
//=> false
Note: If either argument is the non-literal number type, the result is boolean.
import type {GreaterThanOrEqual} from 'type-fest';
type A = GreaterThanOrEqual<number, 1>;
//=> boolean
type B = GreaterThanOrEqual<1, number>;
//=> boolean
type C = GreaterThanOrEqual<number, number>;
//=> boolean
import type {GreaterThanOrEqual} from 'type-fest';
// Use `GreaterThanOrEqual` to constrain a function parameter to non-negative numbers.
declare function setNonNegative<N extends number>(value: GreaterThanOrEqual<N, 0> extends true ? N : never): void;
setNonNegative(0); // ✅ Allowed
setNonNegative(1); // ✅ Allowed
// @ts-expect-error
setNonNegative(-1);
// @ts-expect-error
setNonNegative(-2);
Returns a boolean for whether a given number is greater than or equal to another number.