32 lines
762 B
TypeScript

export default function uploadWithProgress(url, options: RequestInit, onProgress: ((ev: ProgressEvent) => any) | null): Promise<string> {
return new Promise((resolve, reject) => {
const xhr = new XMLHttpRequest()
xhr.onload = () => {
if(xhr.status >= 400) {
return reject(xhr.responseText)
}
resolve(xhr.responseText)
}
xhr.onerror = reject
if(onProgress && xhr.upload) {
xhr.upload.onprogress = onProgress
xhr.upload.onerror = reject
} else {
console.error("Could not attach progress event listener")
}
xhr.open(options.method || "GET", url, true)
if(options.headers) {
for(const key of Object.keys(options.headers)) {
xhr.setRequestHeader(key, options.headers[key])
}
}
xhr.send(options.body)
})
}