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.eslintrc.js
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.eslintrc.js
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// Based on https://github.com/iamturns/create-exposed-app/blob/master/.eslintrc.js
module.exports = {
root: true,
parser: '@typescript-eslint/parser',
parserOptions: {
project: './tsconfig.json',
},
plugins: ['eslint-comments', 'jest', 'unicorn', 'promise', '@emotion/eslint-plugin', 'paste-internal'],
extends: [
'twilio-react',
'twilio-ts',
'plugin:jest/recommended',
'plugin:eslint-comments/recommended',
'plugin:cypress/recommended',
'plugin:promise/recommended',
'plugin:unicorn/recommended',
'plugin:paste-internal/all',
],
env: {
node: true,
browser: true,
jest: true,
},
rules: {
// Makes no sense to allow type inference for expression parameters, but require typing the response
'@typescript-eslint/explicit-function-return-type': [
'error',
{
allowExpressions: true,
allowTypedFunctionExpressions: true,
},
],
eqeqeq: ['error', 'smart'],
// Doesnt really work in our use-cases: https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/require-default-props.m
'react/require-default-props': 'off',
/**
* Disbled this rule because the current failures are stories, test files, and index files.
* - story files need to export stories even tho no other module uses them for storybook to render
* - test files don't need to export anything
* - for some reason, index files that just say "export * from '../blah'" fail saying they don't export anything, even tho they do
* This rule is designed for a product, not a series of libraries.
*/
'import/no-unused-modules': [0],
// There are times when we have to use require, so maybe this should stay a warning
'@typescript-eslint/no-require-imports': 'warn',
// There are times when we have to use var requires, so maybe this should stay a warning (example: importing token files on the website)
'@typescript-eslint/no-var-requires': 'warn',
// We spread props a lot, for example for combobox hooks
'react/jsx-props-no-spreading': 'off',
// This rule doesn't work with typescript, disabled in favor of the typescript version
'no-duplicate-imports': 'off',
'@typescript-eslint/no-duplicate-imports': 'error',
// We have our own prettier config that runs in its own CI check, so we don't need ESLint to do it too
'prettier/prettier': 'off',
// This extends twilio-style's camelcase rule and adds an allow list
camelcase: [
'error',
{
properties: 'always',
ignoreDestructuring: true,
allow: [
// Box pseudoselectors are allowed
'_focus_hover',
'_focus_placeholder',
'_checked_hover',
'_disabled_focus',
'_selected_hover',
'_selected_focus',
'_selected_focusVisible',
'_pressed_focus',
'_pressed_hover',
'_pressed_disabled',
'_pressed_active',
'__moz_focus_inner',
'__webkit_datetime_edit',
'__webkit_calendar_picker_indicator_hover',
// these are variant names we use as keys in style objects
'destructive_link',
'destructive_secondary',
'circle_small',
'rounded_small',
'icon_small',
'error_counter',
'neutral_counter',
// unstable props are allowed
'^unstable_',
// this is a temporary prop, if the console patch is removed from components this can be removed too
'__console_patch',
// token types relating to color contrast aren't camelcase, but they should probably be refactored
'text_contrast_pairing',
'uicontrol_contrast_pairing',
'data_visualization_contrast_pairing',
// These are from the website and are keys returned from airtable, they should be refactored
'Design_committee_review',
'Engineer_committee_review',
'external_link',
'Product_suitability',
'Public_Description__from_System_',
'Release_Description',
'Release_feature_name',
'page_path',
'event_category',
'event_label',
],
},
],
/**
* TEMPORARY TWILIO STYLE OVERRIDES
* There are PRs open to update these rules in twilio-style
*/
'react/no-multi-comp': ['error', {ignoreStateless: true}],
'jsx-a11y/label-has-associated-control': [
2,
{
assert: 'either',
depth: 3,
},
],
/**
* FIXES FOR ANOTHER TICKET
* these take a little more work to fix (there are 535 errors)
*/
'@typescript-eslint/no-floating-promises': 'off',
'react-hooks/rules-of-hooks': 'off',
'react/jsx-no-bind': 'off',
'react/no-unused-prop-types': 'off',
'no-negated-condition': 'off',
'no-eq-null': 'off',
'no-unneeded-ternary': 'off',
'no-nested-ternary': 'off',
'no-process-exit': 'off',
'no-new': 'off',
'default-case': 'off',
'guard-for-in': 'off',
'callback-return': 'off',
'sonarjs/cognitive-complexity': 'off',
'sonarjs/no-nested-template-literals': 'off',
'sonarjs/no-identical-functions': 'off',
complexity: 'off',
// this rule should be kept warning once it is fixed
'sonarjs/no-duplicate-string': 'warn',
/** MISC OVERRIDES */
// Too restrictive, writing ugly code to defend against a very unlikely scenario: https://eslint.org/docs/rules/no-prototype-builtins
'no-prototype-builtins': 'off',
'@typescript-eslint/comma-dangle': ['error', 'only-multiline'],
'@typescript-eslint/no-shadow': ['error', {ignoreFunctionTypeParameterNameValueShadow: true}],
// This rule tells people to do something (import foo = require('foo')) which doesn't work
// with babel compiled typescript.
'@typescript-eslint/no-var-requires': 'off',
// Warn about incorrect type imports
// https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/consistent-type-imports.md
'@typescript-eslint/consistent-type-imports': 'warn',
// Common abbreviations are known and readable
'unicorn/prevent-abbreviations': 'off',
// We don't really have a style yet. To be discussed
// https://github.com/sindresorhus/eslint-plugin-unicorn/blob/master/docs/rules/filename-case.md
'unicorn/filename-case': 'off',
'unicorn/no-null': 'off',
'unicorn/no-reduce': 'off',
'unicorn/no-fn-reference-in-iterator': 'off',
// weirdly specific
'unicorn/import-style': 'off',
'unicorn/prefer-ternary': 'off',
// Too big of a change
'unicorn/numeric-separators-style': 'off',
// Mixed ts and node code base
'unicorn/prefer-module': 'warn',
// This conflicts with consistent-return
'unicorn/no-useless-undefined': 'off',
// New rules
'unicorn/no-array-reduce': 'off',
'unicorn/no-array-for-each': 'off',
'unicorn/prefer-dom-node-dataset': 'off',
'unicorn/no-lonely-if': 'off',
'unicorn/prefer-export-from': 'off',
'unicorn/no-array-callback-reference': 'off',
'unicorn/consistent-destructuring': 'off',
'unicorn/prefer-number-properties': 'off',
'unicorn/prefer-node-protocol': 'off',
'unicorn/prefer-spread': 'off',
'unicorn/prefer-regexp-test': 'off',
'unicorn/no-new-array': 'off',
'unicorn/prefer-object-from-entries': 'off',
// We don't use jasmine and this clashes with danger js
'jest/no-jasmine-globals': 'off',
'jest/no-conditional-expect': 'off',
},
overrides: [
{
files: [
'**/stories/**/*.tsx',
'**/__tests__/*.spec.{ts,tsx}',
'**/__tests__/*.test.{ts,tsx}',
'**/__fixtures__/*.tsx',
'**/__test__/*.spec.{ts,tsx}',
'performance-benchmarks/**/*.tsx',
],
rules: {
// stories and tests aren't public, they don't need display names
'react/display-name': 'off',
// we use empty functions in stories and tests to mock components
'@typescript-eslint/no-empty-function': 'off',
},
},
],
settings: {
react: {
version: 'detect',
},
},
};