[Bug] heap out of memory in node 10.x when webpack's devtool configed cheap-module-source-map

[beanlee]

🐛 bug report

Describe the bug
devtool 编译生成 cheap-module-source-map 在 node 10 环境下内存溢出

[27849:0x102880000]   133250 ms: Mark-sweep 1377.8 (1409.0) -> 1377.8 (1409.5) MB, 366.7 / 0.0 ms  (average mu = 0.076, current mu = 0.015) allocation failure scavenge might not succeed


<--- JS stacktrace --->

==== JS stack trace =========================================

Security context: 0x1673f099e6c1 <JSObject>
    0: builtin exit frame: stringify(this=0x1673f09919f9 <Object map = 0x1673955842a9>,0x1673fa7826f1 <undefined>,0x1673fa7826f1 <undefined>,0x1673500ffcc9 <Object map = 0x167345daabb1>,0x1673f09919f9 <Object map = 0x1673955842a9>)

    1: arguments adaptor frame: 1->3
    2: /* anonymous */(aka /* anonymous */) [0x1673e6f2d6a1] [/Users/xxx/node_modules/webpack/lib/Sourc...

FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory

Environment (please complete the following information):

• Node Version: v10

[beanlee]

rocketact/packages/rocketact-scripts/src/config/webpack/basic.ts

Line 12 in 3b7e159

.devtool(isDevelopmentEnv() ? "cheap-module-source-map" : "source-map")

在 node v10.22 版本下复现，切换到 node v12+ 以上问题消失。设置成其他可以映射源码的模式都会有内存溢出的问题 xxx-module-source-map。

参考文档 https://webpack.docschina.org/configuration/devtool/

目前两种解决方案：

1. 建议用户升级 node 版本；
2. 修改 cheap-module-source-map 成其他非源码类的 map；（这种没法起到开发过程中查看映射源码 sourcemap 的作用，不可取）
3. 给 webpack devtool 提 issue 看能否让官方解决，分析下看具体是 node 10 问题，还是 webpack 实现时能否换一个实现方式的问题