Sharp Nodejs Trim to the bottom right pixel color

trim-image.mjs

import sharp from 'sharp';

export async function trimImage(input: Buffer) {
	try {
		const metadata = await sharp(input).metadata();
		const width = metadata.width || 0;
		const height = metadata.height || 0;

		if (!width || !height) return input;

		const [red, green, blue] = await sharp(input)
			.raw()
			.toBuffer()
			.then((data) => {
				const offset = 3 * (width * height + width);
				const r = data[offset];
				const g = data[offset + 1];
				const b = data[offset + 2];

				return [r, g, b];
			});

		return sharp(input)
			.trim({ background: `rgb(${red},${green},${blue})` })
			.toBuffer();
	} catch (error) {
		console.error(`Error trimming image: ${input}`, error);
	}

	return input;
}