@amplitude/analytics-browser/lib/esm/transports/xhr.js

Official Amplitude SDK for Web

import { __assign, __awaiter, __extends, __generator, __read, __values } from "tslib";
import { BaseTransport } from '@amplitude/analytics-core';
var XHRTransport = /** @class */ (function (_super) {
    __extends(XHRTransport, _super);
    function XHRTransport(customHeaders) {
        if (customHeaders === void 0) { customHeaders = {}; }
        var _this = _super.call(this) || this;
        _this.state = {
            done: 4,
        };
        _this.customHeaders = customHeaders;
        return _this;
    }
    XHRTransport.prototype.send = function (serverUrl, payload) {
        return __awaiter(this, void 0, void 0, function () {
            var _this = this;
            return __generator(this, function (_a) {
                return [2 /*return*/, new Promise(function (resolve, reject) {
                        var e_1, _a;
                        /* istanbul ignore if */
                        if (typeof XMLHttpRequest === 'undefined') {
                            reject(new Error('XHRTransport is not supported.'));
                        }
                        var xhr = new XMLHttpRequest();
                        xhr.open('POST', serverUrl, true);
                        xhr.onreadystatechange = function () {
                            if (xhr.readyState === _this.state.done) {
                                var responseText = xhr.responseText;
                                try {
                                    // eslint-disable-next-line @typescript-eslint/no-unsafe-argument
                                    resolve(_this.buildResponse(JSON.parse(responseText)));
                                }
                                catch (_a) {
                                    resolve(_this.buildResponse({ code: xhr.status }));
                                }
                            }
                        };
                        // Merge headers: custom headers override defaults (consistent with FetchTransport)
                        var headers = __assign({ 'Content-Type': 'application/json', Accept: '*/*' }, _this.customHeaders);
                        try {
                            for (var _b = __values(Object.entries(headers)), _c = _b.next(); !_c.done; _c = _b.next()) {
                                var _d = __read(_c.value, 2), key = _d[0], value = _d[1];
                                xhr.setRequestHeader(key, value);
                            }
                        }
                        catch (e_1_1) { e_1 = { error: e_1_1 }; }
                        finally {
                            try {
                                if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
                            }
                            finally { if (e_1) throw e_1.error; }
                        }
                        xhr.send(JSON.stringify(payload));
                    })];
            });
        });
    };
    return XHRTransport;
}(BaseTransport));
export { XHRTransport };
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