/**
 * whether `S` is a numeric string.
 * if `S` is a union type, returns `1` only if all members are numeric
 *
 * @since 0.0.2
 *
 * @example
 * type e0 = IsNumeric<never>       // true
 * type e1 = IsNumeric<''>          // false
 * type e2 = IsNumeric<'0'>         // true
 * type e3 = IsNumeric<'NaN'>       // false
 * type e4 = IsNumeric<'-9.8'>      // true
 * type e5 = IsNumeric<'foo'>       // false
 * type e6 = IsNumeric<'0' | 'foo'> // false
 * type e7 = IsNumeric<'0' | '1'>   // true
 */
export type IsNumeric<S extends string> = [
    S
] extends [`${number}`] ? true : false;
/**
 * @since 0.0.2
 */
export type IsNumericString<T> = T extends string ? IsNumeric<T> : false;
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