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###  angular 服务端渲染npm run dev:ssr报错
提示内存溢出
FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory
```js

<--- Last few GCs --->

[10668:0x4948140]   136804 ms: Scavenge (reduce) 1927.9 (2037.3) -> 1927.3 (2037.3) MB, 2.5 / 0.0 ms  (average mu = 0.258, current mu = 0.228) allocation failure 
[10668:0x4948140]   136811 ms: Scavenge (reduce) 1928.3 (2037.5) -> 1927.7 (2037.5) MB, 2.5 / 0.0 ms  (average mu = 0.258, current mu = 0.228) allocation failure 
[10668:0x4948140]   136900 ms: Scavenge (reduce) 1928.5 (2037.8) -> 1927.9 (2037.8) MB, 5.1 / 0.0 ms  (average mu = 0.258, current mu = 0.228) allocation failure

<--- JS stacktrace --->

FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory
 1: 0xb00e10 node::Abort() [ng run blogWeb:serve-ssr]
 2: 0xa1823b node::FatalError(char const*, char const*) [ng run blogWeb:serve-ssr]
 3: 0xcee09e v8::Utils::ReportOOMFailure(v8::internal::Isolate*, char const*, bool) [ng run blogWeb:serve-ssr]
 4: 0xcee417 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, bool) [ng run blogWeb:serve-ssr]
 5: 0xea65d5  [ng run blogWeb:serve-ssr]
 6: 0xea70b6  [ng run blogWeb:serve-ssr]
 7: 0xeb4fee  [ng run blogWeb:serve-ssr]
 8: 0xeb5a30 v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace, v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [ng run blogWeb:serve-ssr]
 9: 0xeb89ae v8::internal::Heap::AllocateRawWithRetryOrFailSlowPath(int, v8::internal::AllocationType, v8::internal::AllocationOrigin, v8::internal::AllocationAlignment) [ng run blogWeb:serve-ssr]
10: 0xe79b12 v8::internal::Factory::AllocateRaw(int, v8::internal::AllocationType, v8::internal::AllocationAlignment) [ng run blogWeb:serve-ssr]
11: 0xe72124 v8::internal::FactoryBase<v8::internal::Factory>::AllocateRawWithImmortalMap(int, v8::internal::AllocationType, v8::internal::Map, v8::internal::AllocationAlignment) [ng run blogWeb:serve-ssr]
12: 0xe73e40 v8::internal::FactoryBase<v8::internal::Factory>::NewRawOneByteString(int, v8::internal::AllocationType) [ng run blogWeb:serve-ssr]
13: 0x1105a28 v8::internal::String::SlowFlatten(v8::internal::Isolate*, v8::internal::Handle<v8::internal::ConsString>, v8::internal::AllocationType) [ng run blogWeb:serve-ssr]
14: 0xcf9989 v8::String::Utf8Length(v8::Isolate*) const [ng run blogWeb:serve-ssr]
15: 0xad74e7  [ng run blogWeb:serve-ssr]
16: 0xd4a82e  [ng run blogWeb:serve-ssr]
17: 0xd4bc4f v8::internal::Builtin_HandleApiCall(int, unsigned long*, v8::internal::Isolate*) [ng run blogWeb:serve-ssr]
18: 0x15e7dd9  [ng run blogWeb:serve-ssr]
已放弃 (核心已转储)
```
#### 原因
在 Node 中通过 JavaScript 使用内存时只能使用部分内存（64位系统下约为1.4 GB，32位系统下约为0.7 GB），这就是我们编译项目时为什么会出现内存泄露了，因为前端项目如果非常的庞大，webpack 编译时就会占用很多的系统资源，如果超出了V8对 Node 默认的内存限制大小就会出现刚刚我截图的那个错误了。
#### 解决方法
在项目根目录node_modeles文件夹下的.bin目录里面找到一个叫ng的文件，在该文件的首行写上#!/usr/bin/env node --max_old_space_size=4096，这样也就可以解除v8对node的内存使用限制了。
#### more
参考文章：[基于node的前端项目编译时内存溢出问题](https://segmentfault.com/a/1190000010437948)