perf: optimize ESLint for large monorepo

Disable expensive rules that provide limited value:
- prettier/prettier (~30% savings) - Prettier runs separately via lint:misc
- import-x/namespace (~22% savings) - Very expensive with limited benefit

Add NODE_OPTIONS=--max-semi-space-size=256 to CI lint step as recommended
by typescript-eslint for better memory management.

See: https://typescript-eslint.io/troubleshooting/typed-linting/performance

Author: cryptodev-2s

.github/workflows/lint-build-test.yml

@@ -39,6 +39,10 @@ jobs:
           is-high-risk-environment: false
           node-version: ${{ matrix.node-version }}
       - run: yarn lint
+        env:
+          # Optimize Node.js memory for ESLint performance in large monorepos
+          # See: https://typescript-eslint.io/troubleshooting/typed-linting/performance
+          NODE_OPTIONS: '--max-semi-space-size=256'
       - name: Require clean working directory
         shell: bash
         run: |

eslint.config.mjs

@@ -28,6 +28,13 @@ const config = createConfig([
       // Enabling it with error suppression breaks `--fix`, because the autofixer for this rule
       // does not work very well.
       'jsdoc/require-jsdoc': 'off',
+
+      // Performance optimizations for large monorepos
+      // See: https://typescript-eslint.io/troubleshooting/typed-linting/performance
+      // Prettier runs separately via `yarn lint:misc`, no need to run through ESLint (~30% savings)
+      'prettier/prettier': 'off',
+      // This rule is very expensive (~22% of lint time) and provides limited value
+      'import-x/namespace': 'off',
     },
     settings: {
       jsdoc: {