How to make a column chart value label display N/A for empty columns?

I don't speak javascript but I asked ChatGPT to rewrite it based on my goal and the current issue, and it actually worked:

widget.on('beforeviewloaded', (scope, args) => {
    Object.keys(args.options.plotOptions).forEach((chartType) => {
        const origFn = args.options.plotOptions[chartType].dataLabels.formatter;
        args.options.plotOptions[chartType].dataLabels.formatter = function (point) {
            const self = this;
            return function (point) {
                const formattedValue = origFn.apply(this, [point]); // Apply the original formatter

                // Convert the formatted value to a number
                const numericValue = parseFloat(formattedValue);

                // If the value is negative, display 'N/A'; otherwise, show the formatted value
                const value = (numericValue < 0 || isNaN(numericValue)) ? 'N/A' : formattedValue;

                return value;
            };
        }.call({
            original: true
        });
    });
});

So thank you for getting me 99% of the way there, and thank the robots for figuring out the last piece!