async function readRequestBody(request) {
    const { headers } = request
    const contentType = headers.get('content-type')
    if (contentType.includes('application/json')) {
        const body = await request.json()
        return JSON.stringify(body)
    } else if (contentType.includes('application/text')) {
        const body = await request.text()
        return body
    } else if (contentType.includes('text/html')) {
        const body = await request.text()
        return body
    } else if (contentType.includes('form')) {
        const formData = await request.formData()
        let body = {}
        for (let entry of formData.entries()) {
            body[entry[0]] = entry[1]
        }
        return JSON.stringify(body)
    } else {
        let myBlob = await request.blob()
        var objectURL = URL.createObjectURL(myBlob)
        return objectURL
    }
}