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NODEJS OPTIONS [ NODE_OPTIONS ]

Node.js accompanies an assortment of CLI choices. These choices uncover worked in investigating, different ways of executing scripts, and other accommodating runtime choices.

To see this documentation as a manual page in a terminal, run 'man hub'. Read more

How to setup multiple options on GitHub Workflow

jobs:
  build:
    name: Build www.webmanajemen.com
    runs-on: ubuntu-latest
    env:
      NODE_OPTIONS: "--experimental-vm-modules --max_old_space_size=8192"

How to performance run nodejs on low devices

The recommended amounts for a "low memory device".

for 32-bit and/or Android are:

node --max-executable-size=96 --max-old-space-size=128 --max-semi-space-size=1 app.js

for 64-bit non-android are:

node --max-executable-size=192 --max-old-space-size=256 --max-semi-space-size=2 app.js

These above codes would limit the heap totals to 225mb and 450mb respectively. It doesn't include memory usage outside JS. For instance buffers are allocated as "c memory" , not in the JavaScript heap.

Flags

  • --max-executable-size the maximum size of heap reserved for executable code (the native code result of just-in-time compiled JavaScript).
  • --max-old-space-size the maximum size of heap reserved for long term objects
  • --max-semi-space-size the maximum size of heap reserved for short term objects

Yarn Clean Install

yarn install --immutable --immutable-cache --check-cache --frozen-lockfile --check-files

Nodemon Configuration

{
  "$schema": "http://json.schemastore.org/nodemon",
  "exec": "npm run build && npm start",
  "watch": ["./src/*.ts", "./index.ts", "./webpack.*.js", "./tsconfig.json", "./package.json"],
  "ignore": [
    "*.test.js",
    ".vscode",
    ".gitignore",
    "gh-pages",
    "dist",
    "tests",
    "tmp",
    "temp",
    "./src/tmp",
    "docs",
    "release"
  ],
  "delay": 3000,
  "ext": "ts,js",
  "verbose": true
}