[generated] sandpack files from: codesandbox-client
This commit is contained in:
Will Chen
199
sandpack-generated/static/browserfs12/node/generic/xhr.js
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199
sandpack-generated/static/browserfs12/node/generic/xhr.js
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"use strict";
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/**
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* Contains utility methods for performing a variety of tasks with
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* XmlHttpRequest across browsers.
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*/
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.getFileSizeAsync = exports.getFileSizeSync = exports.syncDownloadFile = exports.asyncDownloadFile = exports.xhrIsAvailable = void 0;
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var util_1 = require("../core/util");
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var api_error_1 = require("../core/api_error");
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exports.xhrIsAvailable = (typeof (XMLHttpRequest) !== "undefined" && XMLHttpRequest !== null);
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function asyncDownloadFileModern(p, type, cb) {
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var req = new XMLHttpRequest();
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req.open('GET', p, true);
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var jsonSupported = true;
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switch (type) {
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case 'buffer':
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req.responseType = 'arraybuffer';
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break;
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case 'json':
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// Some browsers don't support the JSON response type.
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// They either reset responseType, or throw an exception.
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// @see https://github.com/Modernizr/Modernizr/blob/master/src/testXhrType.js
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try {
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req.responseType = 'json';
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jsonSupported = req.responseType === 'json';
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}
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catch (e) {
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jsonSupported = false;
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}
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break;
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default:
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return cb(new api_error_1.ApiError(api_error_1.ErrorCode.EINVAL, "Invalid download type: " + type));
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}
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req.onreadystatechange = function (e) {
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if (req.readyState === 4) {
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if (req.status === 200) {
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switch (type) {
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case 'buffer':
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// XXX: WebKit-based browsers return *null* when XHRing an empty file.
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return cb(null, req.response ? Buffer.from(req.response) : (0, util_1.emptyBuffer)());
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case 'json':
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if (jsonSupported) {
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return cb(null, req.response);
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}
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else {
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return cb(null, JSON.parse(req.responseText));
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}
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}
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}
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else {
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return cb(new api_error_1.ApiError(api_error_1.ErrorCode.EIO, "XHR error: response returned code ".concat(req.status)));
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}
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}
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};
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req.send();
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}
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function syncDownloadFileModern(p, type) {
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var req = new XMLHttpRequest();
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req.open('GET', p, false);
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// On most platforms, we cannot set the responseType of synchronous downloads.
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// @todo Test for this; IE10 allows this, as do older versions of Chrome/FF.
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var data = null;
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var err = null;
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// Classic hack to download binary data as a string.
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req.overrideMimeType('text/plain; charset=x-user-defined');
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req.onreadystatechange = function (e) {
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if (req.readyState === 4) {
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if (req.status === 200) {
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switch (type) {
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case 'buffer':
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// Convert the text into a buffer.
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var text = req.responseText;
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data = Buffer.alloc(text.length);
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// Throw away the upper bits of each character.
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for (var i = 0; i < text.length; i++) {
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// This will automatically throw away the upper bit of each
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// character for us.
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data[i] = text.charCodeAt(i);
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}
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return;
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case 'json':
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data = JSON.parse(req.responseText);
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return;
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}
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}
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else {
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err = new api_error_1.ApiError(api_error_1.ErrorCode.EIO, "XHR error: response returned code ".concat(req.status));
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return;
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}
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}
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};
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req.send();
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if (err) {
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throw err;
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}
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return data;
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}
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function syncDownloadFileIE10(p, type) {
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var req = new XMLHttpRequest();
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req.open('GET', p, false);
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switch (type) {
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case 'buffer':
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req.responseType = 'arraybuffer';
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break;
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case 'json':
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// IE10 does not support the JSON type.
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break;
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default:
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throw new api_error_1.ApiError(api_error_1.ErrorCode.EINVAL, "Invalid download type: " + type);
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}
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var data;
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var err;
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req.onreadystatechange = function (e) {
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if (req.readyState === 4) {
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if (req.status === 200) {
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switch (type) {
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case 'buffer':
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data = Buffer.from(req.response);
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break;
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case 'json':
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data = JSON.parse(req.response);
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break;
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}
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}
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else {
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err = new api_error_1.ApiError(api_error_1.ErrorCode.EIO, "XHR error: response returned code ".concat(req.status));
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}
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}
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};
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req.send();
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if (err) {
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throw err;
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}
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return data;
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}
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/**
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* @hidden
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*/
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function getFileSize(async, p, cb) {
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var req = new XMLHttpRequest();
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req.open('HEAD', p, async);
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req.onreadystatechange = function (e) {
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if (req.readyState === 4) {
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if (req.status === 200) {
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try {
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return cb(null, parseInt(req.getResponseHeader('Content-Length') || '-1', 10));
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}
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catch (e) {
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// In the event that the header isn't present or there is an error...
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return cb(new api_error_1.ApiError(api_error_1.ErrorCode.EIO, "XHR HEAD error: Could not read content-length."));
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}
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}
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else {
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return cb(new api_error_1.ApiError(api_error_1.ErrorCode.EIO, "XHR HEAD error: response returned code ".concat(req.status)));
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}
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}
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};
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req.send();
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}
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/**
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* Asynchronously download a file as a buffer or a JSON object.
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* Note that the third function signature with a non-specialized type is
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* invalid, but TypeScript requires it when you specialize string arguments to
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* constants.
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* @hidden
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*/
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exports.asyncDownloadFile = asyncDownloadFileModern;
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/**
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* Synchronously download a file as a buffer or a JSON object.
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* Note that the third function signature with a non-specialized type is
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* invalid, but TypeScript requires it when you specialize string arguments to
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* constants.
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* @hidden
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*/
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exports.syncDownloadFile = (util_1.isIE && typeof Blob !== 'undefined') ? syncDownloadFileIE10 : syncDownloadFileModern;
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/**
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* Synchronously retrieves the size of the given file in bytes.
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* @hidden
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*/
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function getFileSizeSync(p) {
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var rv = -1;
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getFileSize(false, p, function (err, size) {
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if (err) {
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throw err;
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}
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rv = size;
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});
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return rv;
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}
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exports.getFileSizeSync = getFileSizeSync;
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/**
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* Asynchronously retrieves the size of the given file in bytes.
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* @hidden
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*/
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function getFileSizeAsync(p, cb) {
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getFileSize(true, p, cb);
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}
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exports.getFileSizeAsync = getFileSizeAsync;
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//# sourceMappingURL=xhr.js.map
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