lab/lib/leaks.js

Test utility

// Load modules


// Declare internals

var internals = {};


exports.detect = function (customGlobals) {

    var whitelist = {
        _labScriptRun: true,                // Lab global to detect script executions

        // Enumerable globals
        setTimeout: true,
        setInterval: true,
        setImmediate: true,
        clearTimeout: true,
        clearInterval: true,
        clearImmediate: true,
        console: true,
        Buffer: true,
        process: true,
        global: true,
        GLOBAL: true,
        constructor: true,
        ArrayBuffer: true,
        Int8Array: true,
        Uint8Array: true,
        Uint8ClampedArray: true,
        Int16Array: true,
        Uint16Array: true,
        Int32Array: true,
        Uint32Array: true,
        Float32Array: true,
        Float64Array: true,
        DataView: true,
        __$$labCov: true,
        gc: true,

        // Non-Enumerable globals
        Array: true,
        isNaN: true,
        ReferenceError: true,
        Number: true,
        RangeError: true,
        EvalError: true,
        Function: true,
        isFinite: true,
        Object: true,
        undefined: true,
        Date: true,
        SyntaxError: true,
        String: true,
        eval: true,
        parseFloat: true,
        unescape: true,
        Error: true,
        encodeURI: true,
        NaN: true,
        RegExp: true,
        encodeURIComponent: true,
        Math: true,
        decodeURI: true,
        parseInt: true,
        Infinity: true,
        escape: true,
        decodeURIComponent: true,
        JSON: true,
        TypeError: true,
        URIError: true,
        Boolean: true,
        Intl: true
    };

    if (customGlobals) {
        for (var c = 0, cl = customGlobals.length; c < cl; ++c) {
            whitelist[customGlobals[c]] = true;
        }
    }

    // Harmony features.

    if (global.Promise) {
        whitelist.Promise = true;
    }

    if (global.Proxy) {
        whitelist.Proxy = true;
    }

    if (global.Symbol) {
        whitelist.Symbol = true;
    }

    if (global.Map) {
        whitelist.Map = true;
    }

    if (global.WeakMap) {
        whitelist.WeakMap = true;
    }

    if (global.Set) {
        whitelist.Set = true;
    }

    if (global.WeakSet) {
        whitelist.WeakSet = true;
    }

    if (global.DTRACE_HTTP_SERVER_RESPONSE) {
        whitelist.DTRACE_HTTP_SERVER_RESPONSE = true;
        whitelist.DTRACE_HTTP_SERVER_REQUEST = true;
        whitelist.DTRACE_HTTP_CLIENT_RESPONSE = true;
        whitelist.DTRACE_HTTP_CLIENT_REQUEST = true;
        whitelist.DTRACE_NET_STREAM_END = true;
        whitelist.DTRACE_NET_SERVER_CONNECTION = true;
        whitelist.DTRACE_NET_SOCKET_READ = true;
        whitelist.DTRACE_NET_SOCKET_WRITE = true;
    }

    if (global.COUNTER_NET_SERVER_CONNECTION) {
        whitelist.COUNTER_NET_SERVER_CONNECTION = true;
        whitelist.COUNTER_NET_SERVER_CONNECTION_CLOSE = true;
        whitelist.COUNTER_HTTP_SERVER_REQUEST = true;
        whitelist.COUNTER_HTTP_SERVER_RESPONSE = true;
        whitelist.COUNTER_HTTP_CLIENT_REQUEST = true;
        whitelist.COUNTER_HTTP_CLIENT_RESPONSE = true;
    }

    var leaks = [];
    var globals = Object.getOwnPropertyNames(global);
    for (var i = 0, il = globals.length; i < il; ++i) {
        if (!whitelist[globals[i]] &&
            global[globals[i]] !== global) {

            leaks.push(globals[i]);
        }
    }

    return leaks;
};