【发布时间】:2019-04-23 02:57:36
【问题描述】:
我有一个内存问题,我正在努力解决,但我真的不知道从哪里开始。当我运行测试时,我遇到了一个 JS 堆问题,我的测试将在没有运行的情况下出错。我的预感是它是由我用于国际化的一个非常大的字符串文件引起的。这是一个继承的项目,所以我将概述目前正在发生的事情,也许有人可以帮助我想办法让它变得更好。
在主应用程序中
inject.en.js 文件是一个 2.2MB 的 json 文件,其中包含应用程序的翻译字符串。
var INJECT_en = { ... };
为了尽早提供它,它作为全局 var 包含在应用程序 index.html 中
<script src="js/languages/hybrid.inject.en.js" type="text/javascript"></script>
然后用于构建全局配置对象。
var windowJS = new WindowService().nativeWindow;
var HybridInject = windowJS.HybridInject_en; // custom app strings
var INJECT = windowJS.INJECT_en;
var startInjector = _.merge(_.clone(HybridInject), _.clone(INJECT));
export const CONFIG: ConfigType = {
...
strings: populateStrings(startInjector),
...
}
用于测试
出于多种原因,我使用 Jest 测试此应用程序。我尝试了一些方法来设置 Jest,以便在构建 CONFIG 时以相同的方式提供这些文件,并且我为我的 jestGlobalMocks.ts 选择了以下内容。
我将文件复制到测试目录中并将它们转换为export对象。
export const INJECT_en = { ... }
然后通过使它们在窗口上可用,使它们可用于CONFIG 构建。
Object.defineProperty(window, 'HybridInject_en', {value: HybridInject_en});
Object.defineProperty(window, 'INJECT_en', {value: INJECT_en});
结果
运行测试时,我得到以下输出
[BABEL] Note: The code generator has deoptimised the styling of "jest/configs/inject.en.ts" as it exceeds the max of "500KB".
<--- Last few GCs --->
[208:0x37d62f0] 86678 ms: Scavenge 1384.7 (1422.5) -> 1383.8 (1423.0) MB, 11.5 / 0.1 ms (average mu = 0.143, current mu = 0.101) allocation failure
[208:0x37d62f0] 86694 ms: Scavenge 1384.7 (1423.0) -> 1383.9 (1423.5) MB, 13.5 / 0.1 ms (average mu = 0.143, current mu = 0.101) allocation failure
[208:0x37d62f0] 86710 ms: Scavenge 1384.9 (1423.5) -> 1384.2 (1424.0) MB, 13.5 / 0.1 ms (average mu = 0.143, current mu = 0.101) allocation failure
<--- JS stacktrace --->
==== JS stack trace =========================================
0: ExitFrame [pc: 0x255fdc5dbe1d]
Security context: 0x0e1a9b79e6e1 <JSObject>
1: SourceMapConsumer_allGeneratedPositionsFor [0x32dd014cb6a1] [/var/jenkins_home/workspace/base_jenkins-build/node_modules/source-map/lib/source-map-consumer.js:~178] [pc=0x255fdcb3491a](this=0x0319d2aa8031 <BasicSourceMapConsumer map = 0x68f75371d81>,aArgs=0x1954c0c022a9 <Object map = 0x68f75372671>)
2: /* anonymous */(aka /* anonymous */...
FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory
1: 0x8daaa0 node::Abort() [node]
2: 0x8daaec [node]
3: 0xad73ce v8::Utils::ReportOOMFailure(v8::internal::Isolate*, char const*, bool) [node]
4: 0xad7604 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, bool) [node]
5: 0xec4c32 [node]
6: 0xec4d38 v8::internal::Heap::CheckIneffectiveMarkCompact(unsigned long, double) [node]
7: 0xed0e12 v8::internal::Heap::PerformGarbageCollection(v8::internal::GarbageCollector, v8::GCCallbackFlags) [node]
8: 0xed1744 v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace, v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [node]
9: 0xed43b1 v8::internal::Heap::AllocateRawWithRetryOrFail(int, v8::internal::AllocationSpace, v8::internal::AllocationAlignment) [node]
10: 0xe9d834 v8::internal::Factory::NewFillerObject(int, bool, v8::internal::AllocationSpace) [node]
11: 0x113cf9e v8::internal::Runtime_AllocateInNewSpace(int, v8::internal::Object**, v8::internal::Isolate*) [node]
12: 0x255fdc5dbe1d
Aborted
npm ERR! Test failed. See above for more details.
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标签: javascript angular jestjs angular-test