Type Alias StringToNumber<S>

Example

import type {StringToNumber} from 'type-fest';

type PositiveInteger = StringToNumber<'1234'>;
//=> 1234

type NegativeInteger = StringToNumber<'-1234'>;
//=> -1234

type PositiveFloat = StringToNumber<'1234.56'>;
//=> 1234.56

type NegativeFloat = StringToNumber<'-1234.56'>;
//=> -1234.56

type PositiveInfinity = StringToNumber<'Infinity'>;
//=> Infinity

type NegativeInfinity = StringToNumber<'-Infinity'>;
//=> -Infinity
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Note: Some strings, such as '1.50', '0b10', or '12_345', may look like they can be converted to numbers, but they don't actually have corresponding numeric literals. So, in such cases, this type produces never. See type-fest#1446 for more details.

Example

import type {StringToNumber} from 'type-fest';

type FractionalsEndingInZero = StringToNumber<'1.50'>;
//=> never

type NonDecimalBases = StringToNumber<'0b10' | '0o10' | '0x10'>;
//=> never

type NumericSeparators = StringToNumber<'12_345'>;
//=> never
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