Cloud function request with param and returns a png file

index.ts

import { createCanvas } from 'canvas'


export const signatureImage = functions.https.onRequest((request, response) => {
	
	console.log(request.query.name)
	if(!request.query.name || request.query.name.length === 0)
	response.status(500).send("require a name")

	const canvas = createCanvas(200, 200)
	const ctx = canvas.getContext('2d')

	ctx.font = '30px Impact'
	ctx.rotate(0.1)
	ctx.fillText(request.query.name, 50, 100)

	
	response.send(canvas.toBuffer("image/png"));

});