.eslintrc.js

module.exports = {
    env: {
        browser: true,
        es6: true,
        jest: true,
        mocha: true,
        node: true
    },
    globals: {
        artifacts: false,
        assert: false,
        contract: false,
        web3: false
    },
    extends:
        [
            'standard-with-typescript'
        ],
    // This is needed to add configuration to rules with type information
    parser: '@typescript-eslint/parser',
    parserOptions: {
        project: ['./tsconfig.json']
    },
    ignorePatterns: [
        '.eslintrc.js',
        '**/types/truffle-contracts',
        'coverage',
        'dist/'
    ],
    rules: {
        'no-console': 'off',
        '@typescript-eslint/no-var-requires': 'off',
        '@typescript-eslint/return-await': 'off',
        '@typescript-eslint/no-unnecessary-type-assertion': 'off',
        '@typescript-eslint/require-array-sort-compare': ['error',
            {
                ignoreStringArrays: true
            }
        ]
    },
    overrides: [
        {
            files: '*',
            rules: {
                '@typescript-eslint/naming-convention': 'off',
                '@typescript-eslint/no-non-null-assertion': 'off',
                '@typescript-eslint/restrict-template-expressions': 'off'
            }
        },
        {
            files: [
                '**/test/**/*.ts'
            ],
            rules: {
                'no-unused-expressions': 'off',
                // chai assertions trigger this rule
                '@typescript-eslint/no-unused-expressions': 'off',
                '@typescript-eslint/no-non-null-assertion': 'off'
            }
        },
        {
            // otherwise it will raise an error in every JavaScript file
            files: ['*.ts'],
            rules: {
                '@typescript-eslint/prefer-ts-expect-error': 'off',
                // allow using '${val}' with numbers, bool and null types
                '@typescript-eslint/restrict-template-expressions': [
                    'error',
                    {
                        allowNumber: true,
                        allowBoolean: true,
                        allowNullish: true,
                        allowNullable: true
                    }
                ]
            }
        }
    ]
}