Using the following script on Workers but it’s not working as it returns an error.
Can someone help me with this?
/** image webp conversion
/
/*
- Assume we have an image server able to serve webp, convert png and jpg
- urls to webp urls if the browser supports it
*/
addEventListener(‘fetch’, event => {
event.respondWith(makeWebp(event.request))
})
async function makeWebp(request) {
let regex = /\.jpg$|\.jpeg|\.png$/
if(request.headers.get('Accept')
&& request.headers.get('Accept').match(/image\/webp/)
&& request.url.match(regex)) {
/**
* Replace jpg / png with webp
*/
let url = new URL(request.url.replace(regex, '.webp'))
/**
* Create a new request with the webp url
*/
const modifiedRequest = new Request(url, {
method: request.method,
headers: request.headers
})
/**
* Fetch the webp response
*/
const webpResponse = await fetch(modifiedRequest)
/**
* Add webworker header to the webp response so we can
* check live if the webworking is doing what it should do
*/
const webpHeaders = new Headers(webpResponse.headers)
webpHeaders.append('X-WebWorker', 'active')
/**
* Return a new response object
*/
return new Response(webpResponse.body, {
status: webpResponse.status,
statusText: webpResponse.statusText,
headers: webpHeaders
})
} else {
const response = await fetch(request)
return response
}
}
