Method _calculateValuesToStringsKeys

src/AutoNumeric.js:8287–8293

* Calculate once what are the `valuesToStrings` option keys. * @private

()

     * @private
     */
    _calculateValuesToStringsKeys() {
        if (this.settings.valuesToStrings) {
            this.valuesToStringsKeys = Object.keys(this.settings.valuesToStrings);
        } else {
            this.valuesToStringsKeys = [];
        }
    }

    /**
     * Caches regular expressions for _stripAllNonNumberCharactersExceptCustomDecimalChar