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IsInteger<T>

IsInteger<T> = T extends bigint ? true : T extends number ? number extends T ? false : T extends PositiveInfinity | NegativeInfinity ? false : Not<IsFloat<T>> : false

Defined in: packages/react-querybuilder/src/types/type-fest/is-integer.ts:48

Returns a boolean for whether the given number is an integer, like -5, 1.0, or 100.

Use-case:

  • If you want to make a conditional branch based on the result of whether a number is an integer or not.

Type Parameters​

Type Parameter
T

Example​

import type {IsInteger, PositiveInfinity} from "type-fest";

type A = IsInteger<1>;
//=> true

type B = IsInteger<1.0>;
//=> true

type C = IsInteger<-1>;
//=> true

type D = IsInteger<0b10>;
//=> true

type E = IsInteger<0o10>;
//=> true

type F = IsInteger<0x10>;
//=> true

type G = IsInteger<1.23+21>;
//=> true

type H = IsInteger<1.5>;
//=> false

type I = IsInteger<PositiveInfinity>;
//=> false

type J = IsInteger<1e-7>;
//=> false
caution

API documentation is generated from the latest commit on the main branch. It may be somewhat inconsistent with official releases of React Query Builder.