Support specify --max-old-space-size for started server

When I use eslint plugin in VSCode to lint a large bunch of files, the eslint server crashes. I try to find some way to add node options like “–max-old-space-size=4096”, “–stack_size=10000” to start eslint server but failed.

crash message

[Info  - 5:28:05 PM] ESLint server stopped.
[Info  - 5:28:06 PM] ESLint server running in node v10.11.0
[Info  - 5:28:06 PM] ESLint server is running.
[Info  - 5:28:07 PM] ESLint library loaded from: /Users/dddong/workspace/JS2FuzzIL/node_modules/eslint/lib/api.js
FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory
 1: 0x10ae379d5 node::MakeCallback(v8::Isolate*, v8::Local<v8::Object>, v8::Local<v8::Function>, int, v8::Local<v8::Value>*) [/Applications/Visual Studio Code - Insiders.app/Contents/Frameworks/Electron Framework.framework/Versions/A/Electron Framework]
 2: 0x10ae37b4a node::get_builtin_module(char const*) [/Applications/Visual Studio Code - Insiders.app/Contents/Frameworks/Electron Framework.framework/Versions/A/Electron Framework]
 3: 0x1077e2c6e v8::internal::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*) [/Applications/Visual Studio Code - Insiders.app/Contents/Frameworks/Electron Framework.framework/Versions/A/Electron Framework]
 4: 0x1078a3fc2 v8::internal::Heap::CreateFillerObjectAt(unsigned long, int, v8::internal::ClearRecordedSlots, v8::internal::ClearFreedMemoryMode) [/Applications/Visual Studio Code - Insiders.app/Contents/Frameworks/Electron Framework.framework/Versions/A/Electron Framework]
 5: 0x1078a6703 v8::internal::Heap::CreateFillerObjectAt(unsigned long, int, v8::internal::ClearRecordedSlots, v8::internal::ClearFreedMemoryMode) [/Applications/Visual Studio Code - Insiders.app/Contents/Frameworks/Electron Framework.framework/Versions/A/Electron Framework]
 6: 0x1078a272c v8::internal::Heap::CreateFillerObjectAt(unsigned long, int, v8::internal::ClearRecordedSlots, v8::internal::ClearFreedMemoryMode) [/Applications/Visual Studio Code - Insiders.app/Contents/Frameworks/Electron Framework.framework/Versions/A/Electron Framework]
 7: 0x1078a0561 v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace, v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [/Applications/Visual Studio Code - Insiders.app/Contents/Frameworks/Electron Framework.framework/Versions/A/Electron Framework]
 8: 0x1078acc75 v8::internal::Heap::RootIsImmortalImmovable(int) [/Applications/Visual Studio Code - Insiders.app/Contents/Frameworks/Electron Framework.framework/Versions/A/Electron Framework]
 9: 0x1078accdf v8::internal::Heap::RootIsImmortalImmovable(int) [/Applications/Visual Studio Code - Insiders.app/Contents/Frameworks/Electron Framework.framework/Versions/A/Electron Framework]
10: 0x107449a73 v8::internal::Factory::NewFillerObject(int, bool, v8::internal::AllocationSpace) [/Applications/Visual Studio Code - Insiders.app/Contents/Frameworks/Electron Framework.framework/Versions/A/Electron Framework]
11: 0x107625f8c v8::internal::RegisterConfiguration::AreAliases(v8::internal::MachineRepresentation, int, v8::internal::MachineRepresentation, int) const [/Applications/Visual Studio Code - Insiders.app/Contents/Frameworks/Electron Framework.framework/Versions/A/Electron Framework]
12: 0x107a81d8e v8::internal::Parser::BuildIteratorCloseForCompletion(v8::internal::ZoneList<v8::internal::Statement*>*, v8::internal::Variable*, v8::internal::Expression*, v8::internal::IteratorType) [/Applications/Visual Studio Code - Insiders.app/Contents/Frameworks/Electron Framework.framework/Versions/A/Electron Framework]

<--- Last few GCs --->

[51895:0x10c8a7000]   785803 ms: Mark-sweep 2049.1 (2086.5) -> 2048.4 (2087.5) MB, 2049.2 / 0.0 ms  (average mu = 0.073, current mu = 0.007) allocation failure scavenge might not succeed


<--- JS stacktrace --->

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

    0: ExitFrame [pc: 0x107a81d8e]
Security context: 0x039f533676d9 <JSObject>
    1: /* anonymous */ [0x39f4467e3e1] [/Users/dddong/workspace/JS2FuzzIL/node_modules/acorn/dist/acorn.js:~4254] [pc=0x25db0d97b8c0](this=0x039f90bd4d69 <Parser map = 0x39fd3860a81>)
    2: /* anonymous */ [0x39f4467c2e1] [/Users/dddong/workspace/JS2FuzzIL/node_modules/acorn/dist/acorn.js:~2728] [pc=0x25db0d875615](this=0x039f90bd4d69 <Parser map = 0x39fd3860a...

Eslint version: 1.9.0 Vscode version: 1.37.0-insider

[bradleyayers]

I’ve ended up using the eslint.runtime option for this, with the script:

#!/bin/bash

echo "ESLint server using Node.js from: $0"
export NODE_OPTIONS=--max_old_space_size=4096
echo "ESLint server using NODE_OPTIONS: $NODE_OPTIONS"
node $@

[maneetgoyal]

I’ve ended up using the eslint.runtime option for this, with the script:

#!/bin/bash

echo "ESLint server using Node.js from: $0"
export NODE_OPTIONS=--max_old_space_size=4096
echo "ESLint server using NODE_OPTIONS: $NODE_OPTIONS"
node $@

@bradleyayers @singleghost Can you please add some more details? I think I’m doing something wrong. Currently, I have this in my settings.json: "eslint.runtime": "./vscode-eslint.sh", and vscode-eslint.sh contains the code you suggested. Getting the following error:

---

Using absolute path for the bash script seemed to work, after chmod.