// Loaded from https://deno.land/x/cliffy@v0.12.1/packages/flags/lib/types/number.ts


import { IFlagArgument, IFlagOptions, ITypeHandler } from '../types.ts';

export const number: ITypeHandler<number> = ( option: IFlagOptions, arg: IFlagArgument, value: string ): number => {

    if ( isNaN( value as any ) ) {
        throw new Error( `Option --${ option.name } must be of type number but got: ${ value }` );
    }

    return parseFloat( value );
};