@neabyte/chart-to-image/eslint.config.js

Convert trading charts to images using Node.js canvas with advanced features: 6 chart types, VWAP/EMA/SMA indicators, custom colors, themes, hide elements, scaling, and PNG/JPEG export formats.

import js from '@eslint/js'
import tseslint from '@typescript-eslint/eslint-plugin'
import tsparser from '@typescript-eslint/parser'
import importPlugin from 'eslint-plugin-import'
import sonarjs from 'eslint-plugin-sonarjs'
import prettier from 'eslint-config-prettier'

export default [
  js.configs.recommended,
  {
    files: ['**/*.ts'],
    languageOptions: {
      parser: tsparser,
      parserOptions: {
        ecmaVersion: 'latest',
        sourceType: 'module',
        ecmaFeatures: {
          jsx: true
        }
      },
      globals: {
        console: 'readonly',
        process: 'readonly',
        Buffer: 'readonly',
        __dirname: 'readonly',
        __filename: 'readonly',
        global: 'readonly',
        module: 'readonly',
        require: 'readonly',
        exports: 'readonly',
        setTimeout: 'readonly',
        clearTimeout: 'readonly',
        setInterval: 'readonly',
        clearInterval: 'readonly',
        document: 'readonly',
        window: 'readonly',
        btoa: 'readonly',
        atob: 'readonly',
        HTMLCanvasElement: 'readonly',
        HTMLElement: 'readonly',
        CanvasRenderingContext2D: 'readonly'
      }
    },
    plugins: {
      '@typescript-eslint': tseslint,
      import: importPlugin,
      sonarjs: sonarjs
    },
    rules: {
      // TypeScript rules
      '@typescript-eslint/no-unused-vars': 'error',
      '@typescript-eslint/explicit-function-return-type': 'warn',
      '@typescript-eslint/no-explicit-any': 'warn',
      
      // General rules
      'semi': ['error', 'never'],
      'quotes': ['error', 'single'],
      'comma-dangle': ['error', 'never'],
      'no-trailing-spaces': 'error',
      'eol-last': 'error',
      
      // Import rules
      'import/order': [
        'error',
        {
          'groups': [
            'builtin',
            'external',
            'internal',
            'parent',
            'sibling',
            'index'
          ],
          'newlines-between': 'always',
          'alphabetize': {
            'order': 'asc',
            'caseInsensitive': true
          }
        }
      ],
      
      // SonarJS rules
      'sonarjs/cognitive-complexity': ['error', 15],
      'sonarjs/no-duplicate-string': 'warn',
      
      // Code style
      'curly': ['error', 'all'],
      'no-inline-comments': 'error',
      'no-undef': 'error'
    }
  },
  prettier
]