util-helpers/lib/getFileBlob.js

一个基于业务场景的工具方法库

'use strict';

var tslib = require('tslib');
var ut2 = require('ut2');
var ajax = require('./ajax.js');

var SuccessResponseStatus = [200, 304];
function getFileBlob(file, ajaxOptions) {
    return new Promise(function (resolve, reject) {
        if (ut2.isBlob(file)) {
            resolve(file);
        }
        else {
            ajax(file, tslib.__assign({ responseType: 'blob' }, ajaxOptions))
                .then(function (ev) {
                var responseStatus = ev.target.status;
                if (SuccessResponseStatus.indexOf(responseStatus) !== -1) {
                    resolve(ev.target.response);
                }
                else {
                    var err = new Error("The file does not support get requests, responseStatus ".concat(responseStatus, ", '").concat(file, "'."));
                    console.error(err);
                    reject(err);
                }
            })
                .catch(function (err) {
                console.error(new Error("Failed to request file. ".concat(err)));
                reject(err);
            });
        }
    });
}

module.exports = getFileBlob;