Method _prepareValueForRounding

src/AutoNumeric.js:5951–5978

* Modify the given `value` in order to make it usable for the rest of the rounding function. * This convert the `value` to a positive one, trim any leading zeros and make sure it does not start with a leading dot. * * @param {string} value The unformatted value * @param {object}

(value, settings)

     * @private
     */
    static _prepareValueForRounding(value, settings) {
        // Checks if `inputValue` is a negative value
        let negativeSign = '';
        if (AutoNumericHelper.isNegativeStrict(value, '-')) { // The value being unformatted, we check for the minus sign
            negativeSign = '-';

            // Removes the negative sign that will be added back later if required
            value = value.replace('-', '');
        }

        // Append a zero if the first character is not a digit (then it is likely a dot)
        if (!value.match(/^\d/)) {
            value = `0${value}`;
        }

        // Determines if the value is equal to zero. If it is, remove the negative sign
        if (Number(value) === 0) {
            negativeSign = '';
        }

        // Trims leading zero's as needed
        if ((Number(value) > 0 && settings.leadingZero !== AutoNumeric.options.leadingZero.keep) ||
            (value.length > 0 && settings.leadingZero === AutoNumeric.options.leadingZero.allow)) {
            value = value.replace(/^0*(\d)/, '$1');
        }

        return [negativeSign, value];
    }

    /**
     * Return `true` if a round up should be done given the last digit, the settings and other information about the value.