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module.exports = {
	root: true,
	parser: '@typescript-eslint/parser',
	extends: ['eslint:recommended', 'plugin:@typescript-eslint/recommended', 'prettier'],
	plugins: ['svelte3', '@typescript-eslint'],
	ignorePatterns: ['*.cjs'],
	overrides: [{ files: ['*.svelte'], processor: 'svelte3/svelte3' }],
	settings: {
		'svelte3/typescript': () => require('typescript')
	},
	parserOptions: {
		sourceType: 'module',
		ecmaVersion: 2020,
		ecmaFeatures: {
			impliedStrict: true
		}
	},
	env: {
		browser: true,
		es2017: true,
		node: true
	},
	rules: {
		// Best Practices
		'class-methods-use-this': 'warn',
		'no-lone-blocks': 'error',
		'no-self-compare': 'error',
		'no-sequences': 'error',
		'no-useless-concat': 'error',
		'vars-on-top': 'error',
		yoda: 'error',

		// Variables
		'no-use-before-define': 'error',

		// Stylistic Issues
		'comma-dangle': ['warn', 'only-multiline'],
		'eol-last': 'warn',
		'function-paren-newline': 'warn',
		'implicit-arrow-linebreak': 'error',
		'key-spacing': 'warn',
		'keyword-spacing': 'warn',
		'max-depth': ['warn', { max: 6 }],
		'max-nested-callbacks': ['warn', { max: 4 }],
		'max-params': ['warn', { max: 5 }],
		'max-statements-per-line': 'error',
		'new-cap': [
			'warn',
			{
				newIsCap: true,
				capIsNew: false,
				properties: false
			}
		],
		'no-mixed-operators': 'warn',
		'no-multi-assign': 'warn',
		'no-multiple-empty-lines': 'warn',
		'no-nested-ternary': 'warn',
		'no-trailing-spaces': 'warn',
		'no-whitespace-before-property': 'error',
		'one-var-declaration-per-line': 'warn',
		'quote-props': ['error', 'consistent-as-needed'],
		semi: ['warn', 'always'],
		'semi-spacing': 'error',
		'semi-style': 'error',
		'space-before-function-paren': 'off',
		'switch-colon-spacing': 'error',

		// ECMAScript 6
		'arrow-spacing': 'warn',
		'no-useless-computed-key': 'warn',
		'no-useless-constructor': 'error',
		'prefer-const': 'warn'
	}
};