posthog-js/lib/src/request-dispatch.js

Posthog-js allows you to automatically capture usage and send events to PostHog.

"use strict";
var __assign = (this && this.__assign) || function () {
    __assign = Object.assign || function(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
                t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.enableRequestSending = enableRequestSending;
exports.sendRequest = sendRequest;
var core_1 = require("@posthog/core");
var globals_1 = require("@posthog/browser-common/utils/globals");
var request_1 = require("./request");
/*
 * Dynamic... constants? Is that an oxymoron?
 */
// http://hacks.mozilla.org/2009/07/cross-site-xmlhttprequest-with-cors/
// https://developer.mozilla.org/en-US/docs/DOM/XMLHttpRequest#withCredentials
// IE<10 does not support cross-origin XHR's but script tags
// with defer won't block window.onload; ENQUEUE_REQUESTS
// should only be true for Opera<12
var ENQUEUE_REQUESTS = !request_1.SUPPORTS_REQUEST && (globals_1.userAgent === null || globals_1.userAgent === void 0 ? void 0 : globals_1.userAgent.indexOf('MSIE')) === -1 && (globals_1.userAgent === null || globals_1.userAgent === void 0 ? void 0 : globals_1.userAgent.indexOf('Mozilla')) === -1;
function enableRequestSending() {
    ENQUEUE_REQUESTS = false;
}
// Internal dispatch shared by PostHog and RetryQueue. Transport metadata never enters
// RequestResponse or the public options/callback contract.
function sendRequest(instance, options, onResponse) {
    var _a, _b, _c;
    if (onResponse) {
        // Drop callbacks and DOM-ready deferral retain a one-argument completion.
        // A deferred request is drained through a fresh RetryQueue attempt, which
        // owns the eventual transport's Retry-After delay.
        options = __assign(__assign({}, options), { callback: function (response) { return onResponse(response); } });
    }
    if (!instance.__loaded) {
        if (options.fireCallbackOnDrop) {
            (_a = options.callback) === null || _a === void 0 ? void 0 : _a.call(options, { statusCode: 0 });
        }
        return;
    }
    if (ENQUEUE_REQUESTS) {
        instance.__request_queue.push(options);
        return;
    }
    if (instance.rateLimiter.isServerRateLimited(options.batchKey)) {
        if (options.fireCallbackOnDrop) {
            (_b = options.callback) === null || _b === void 0 ? void 0 : _b.call(options, { statusCode: 429 });
        }
        return;
    }
    options.transport = options.transport || instance.config.api_transport;
    options.headers = __assign(__assign({}, instance.config.request_headers), options.headers);
    options.compression =
        options.compression === 'best-available'
            ? ((_c = instance.compression) !== null && _c !== void 0 ? _c : options.compressionFallback)
            : options.compression;
    var disableBeacon = (0, core_1.isUndefined)(instance.config.disable_beacon)
        ? instance.config.__preview_disable_beacon
        : instance.config.disable_beacon;
    if (disableBeacon) {
        options.disableTransport = ['sendBeacon'];
    }
    // Specially useful if you're doing SSR with NextJS
    // Users must be careful when tweaking `cache` because they might get out-of-date feature flags
    options.fetchOptions = options.fetchOptions || instance.config.fetch_options;
    (0, request_1.request)(options, function (response, retryAfterMs) {
        var _a, _b, _c;
        instance.rateLimiter.checkForLimiting(response);
        if (response.statusCode >= 400) {
            (_b = (_a = instance.config).on_request_error) === null || _b === void 0 ? void 0 : _b.call(_a, response);
        }
        if (onResponse) {
            onResponse(response, retryAfterMs);
        }
        else {
            (_c = options.callback) === null || _c === void 0 ? void 0 : _c.call(options, response);
        }
    });
}
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