Image processing with Node.js and sharp

generateImages.js

import { parse, format } from 'path'
import Progress from 'cli-progress'
import sharp from 'sharp'

const fit = process.argv[2]
const width = parseInt(process.argv[3])
const height = parseInt(process.argv[4])
const paths = process.argv.splice(5)

const toFile = (path) => {
	const fileIn = parse(path)
	const fileOut = parse(
		format({
			dir: fileIn.dir,
			name: `${fileIn.name}-${fit}-${width}-${height}`,
			ext: `.avif`,
		})
	)

	return {
		fileIn,
		fileOut,
	}
}

const bar = new Progress.SingleBar({})
bar.start(paths.length, 0)

const results = await Promise.allSettled(
	paths.map((path) => {
		const { fileIn, fileOut } = toFile(path)

		return sharp(format(fileIn))
			.resize(width, height, {
				fit,
			})
			.toFormat('avif', {
				quality: 50,
				chromaSubsampling: '4:2:0',
			})
			.toFile(format(fileOut))
			.catch((error) => {
				// Enhance error with details about the image that failed to process
				throw new AggregateError([error], `Failed to process image '${format(fileIn)}'`)
			})
			.finally(() => {
				bar.increment()
			})
	})
)

bar.stop()

const rejections = results.filter((result) => result.status === 'rejected')
if (rejections.length > 0) {
	rejections.forEach((result) => console.error(result.reason))
	process.exit(1)
}