@lewiswright/vitest-plugin-vis/esm/shared/convert_threshold_unit.js

Vitest visual testing plugin

export function convertThresholdUnit({ failureThresholdType, width, height }, pixelDiff) {
    switch (failureThresholdType) {
        case 'pixel':
            return pixelDiff;
        case 'percent':
            return (pixelDiff / (width * height)) * 100;
        default:
            throw new Error(`Unsupported failureThresholdType: ${failureThresholdType}`);
    }
}