@zag-js/file-utils
Version:
JS File API utilities
57 lines (56 loc) • 1.96 kB
JavaScript
// src/download-file.ts
var BOM_REGEX = /^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i;
var MAC_REGEX = /Macintosh/;
var APPLE_WEBKIT_REGEX = /AppleWebKit/;
var SAFARI_REGEX = /Safari/;
function getBlob(blobOrString, type, appendBOM) {
let blob = typeof blobOrString === "string" ? new Blob([blobOrString], { type }) : blobOrString;
if (appendBOM && BOM_REGEX.test(blob.type)) {
return new Blob([String.fromCharCode(65279), blob], { type: blob.type });
}
return blob;
}
function isMSEdge(win) {
return Boolean(win.navigator && win.navigator.msSaveOrOpenBlob);
}
function isWebView(win) {
return win.navigator && MAC_REGEX.test(win.navigator.userAgent) && APPLE_WEBKIT_REGEX.test(win.navigator.userAgent) && !SAFARI_REGEX.test(win.navigator.userAgent);
}
function downloadFile(options) {
const { file, win = window, type, name, appendBOM, revokeTimeout = 0 } = options;
const doc = win.document;
const blob = getBlob(file, type, appendBOM);
const fileName = (file instanceof File ? name || file.name : name) || "file-download";
if (isMSEdge(win)) {
win.navigator.msSaveOrOpenBlob(blob, fileName);
return;
}
const isMacOSWebView = isWebView(win);
const anchor = doc.createElement("a");
const canUseDownload = "download" in anchor && !isMacOSWebView;
if (canUseDownload) {
const url2 = win.URL.createObjectURL(blob);
anchor.href = url2;
anchor.rel = "noopener";
anchor.download = fileName;
anchor.style.display = "none";
doc.body.appendChild(anchor);
anchor.dispatchEvent(new win.MouseEvent("click"));
setTimeout(() => {
win.URL.revokeObjectURL(url2);
anchor.remove();
}, revokeTimeout);
return;
}
const url = win.URL.createObjectURL(blob);
const popup = win.open(url, "_blank");
if (!popup) {
win.location.href = url;
}
setTimeout(() => {
win.URL.revokeObjectURL(url);
}, revokeTimeout);
}
export {
downloadFile
};