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.eslintrc.json
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.eslintrc.json
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{
"root": true,
"parser": "@typescript-eslint/parser",
"parserOptions": {
"warnOnUnsupportedTypeScriptVersion": false,
"sourceType": "module"
},
"env": {
"browser": false,
"node": true,
"es6": true
},
"extends": [
"eslint:recommended",
"plugin:@typescript-eslint/recommended",
"plugin:@typescript-eslint/stylistic"
],
"plugins": [
"@typescript-eslint", "no-null", "eslint-plugin-local", "simple-import-sort"
],
"ignorePatterns": [
"**/node_modules/**",
"/built/**",
"/tests/**",
"/lib/**",
"/src/lib/*.generated.d.ts",
"/scripts/**/*.js",
"/scripts/**/*.d.*",
"/internal/**",
"/coverage/**"
],
"rules": {
// eslint
"dot-notation": "error",
"eqeqeq": "error",
"no-caller": "error",
"no-constant-condition": ["error", { "checkLoops": false }],
"no-eval": "error",
"no-extra-bind": "error",
"no-new-func": "error",
"no-new-wrappers": "error",
"no-return-await": "error",
"no-restricted-globals": [
"error",
{ "name": "setTimeout" },
{ "name": "clearTimeout" },
{ "name": "setInterval" },
{ "name": "clearInterval" },
{ "name": "setImmediate" },
{ "name": "clearImmediate" }
],
"no-template-curly-in-string": "error",
"no-throw-literal": "error",
"no-undef-init": "error",
"no-var": "error",
"object-shorthand": "error",
"prefer-const": "error",
"prefer-object-spread": "error",
"unicode-bom": ["error", "never"],
// Enabled in eslint:recommended, but not applicable here
"no-extra-boolean-cast": "off",
"no-case-declarations": "off",
"no-cond-assign": "off",
"no-control-regex": "off",
"no-inner-declarations": "off",
// @typescript-eslint/eslint-plugin
"@typescript-eslint/naming-convention": [
"error",
{ "selector": "typeLike", "format": ["PascalCase"], "filter": { "regex": "^(__String|[A-Za-z]+_[A-Za-z]+)$", "match": false } },
{ "selector": "interface", "format": ["PascalCase"], "custom": { "regex": "^I[A-Z]", "match": false }, "filter": { "regex": "^I(Arguments|TextWriter|O([A-Z][a-z]+[A-Za-z]*)?)$", "match": false } },
{ "selector": "variable", "format": ["camelCase", "PascalCase", "UPPER_CASE"], "leadingUnderscore": "allow", "filter": { "regex": "^(_{1,2}filename|_{1,2}dirname|_+|[A-Za-z]+_[A-Za-z]+)$", "match": false } },
{ "selector": "function", "format": ["camelCase", "PascalCase"], "leadingUnderscore": "allow", "filter": { "regex": "^[A-Za-z]+_[A-Za-z]+$", "match": false } },
{ "selector": "parameter", "format": ["camelCase"], "leadingUnderscore": "allow", "filter": { "regex": "^(_+|[A-Za-z]+_[A-Z][a-z]+)$", "match": false } },
{ "selector": "method", "format": ["camelCase", "PascalCase"], "leadingUnderscore": "allow", "filter": { "regex": "^([0-9]+|[A-Za-z]+_[A-Za-z]+)$", "match": false } },
{ "selector": "memberLike", "format": ["camelCase"], "leadingUnderscore": "allow", "filter": { "regex": "^([0-9]+|[A-Za-z]+_[A-Za-z]+)$", "match": false } },
{ "selector": "enumMember", "format": ["camelCase", "PascalCase"], "leadingUnderscore": "allow", "filter": { "regex": "^[A-Za-z]+_[A-Za-z]+$", "match": false } },
{ "selector": "property", "format": null }
],
// Rules enabled in typescript-eslint configs that are not applicable here
"@typescript-eslint/ban-ts-comment": "off",
"@typescript-eslint/class-literal-property-style": "off",
"@typescript-eslint/consistent-indexed-object-style": "off",
"@typescript-eslint/no-duplicate-enum-values": "off",
"@typescript-eslint/no-empty-function": "off",
"@typescript-eslint/no-namespace": "off",
"@typescript-eslint/no-non-null-asserted-optional-chain": "off",
"@typescript-eslint/no-var-requires": "off",
"@typescript-eslint/no-empty-interface": "off",
"@typescript-eslint/no-explicit-any": "off",
"@typescript-eslint/ban-types": [
"error",
{
"extendDefaults": true,
"types": {
// This is theoretically good, but ts-eslint appears to mistake our declaration of Symbol for the global Symbol type.
// See: https://github.com/typescript-eslint/typescript-eslint/issues/7306
"Symbol": false,
"{}": false // {} is a totally useful and valid type.
}
}
],
// Todo: For each of these, investigate whether we want to enable them ✨
"prefer-rest-params": "off",
"prefer-spread": "off",
"@typescript-eslint/no-unused-vars": "off",
// Pending https://github.com/typescript-eslint/typescript-eslint/issues/4820
"@typescript-eslint/prefer-optional-chain": "off",
// scripts/eslint/rules
"local/only-arrow-functions": [
"error",
{
"allowNamedFunctions": true ,
"allowDeclarations": true
}
],
"local/argument-trivia": "error",
"local/no-in-operator": "error",
"local/debug-assert": "error",
"local/no-keywords": "error",
"local/jsdoc-format": "error",
// eslint-plugin-no-null
"no-null/no-null": "error",
// eslint-plugin-simple-import-sort
"simple-import-sort/imports": "error",
"simple-import-sort/exports": "error",
// Formatting rules; remove once a formatter enforces these.
"curly": ["error", "multi-line"],
"linebreak-style": ["error", "windows"],
"max-statements-per-line": ["error", { "max": 1 }],
"new-parens": "error",
"no-trailing-spaces": "error",
"quote-props": ["error", "consistent-as-needed"],
"space-in-parens": "error",
"@typescript-eslint/brace-style": ["error", "stroustrup", { "allowSingleLine": true }],
"@typescript-eslint/no-extra-semi": "error",
"@typescript-eslint/quotes": ["error", "double", { "avoidEscape": true, "allowTemplateLiterals": true }],
"@typescript-eslint/semi": "error",
"@typescript-eslint/space-before-function-paren": [
"error",
{
"asyncArrow": "always",
"anonymous": "always",
"named": "never"
}
],
"local/object-literal-surrounding-space": "error",
"local/no-type-assertion-whitespace": "error",
"local/type-operator-spacing": "error",
"local/no-double-space": "error",
"local/simple-indent": "error"
},
"overrides": [
// By default, the ESLint CLI only looks at .js files. But, it will also look at
// any files which are referenced in an override config. Most users of typescript-eslint
// get this behavior by default by extending a recommended typescript-eslint config, which
// just so happens to override some core ESLint rules. We don't extend from any config, so
// explicitly reference TS files here so the CLI picks them up.
//
// ESLint in VS Code will lint any opened file (so long as it's not eslintignore'd), so
// that will work regardless of the below.
//
// The same applies to mjs files; ESLint appears to not scan those either.
{ "files": ["*.ts", "*.mts", "*.cts", "*.mjs", "*.cjs"] },
{
"files": ["*.mjs", "*.mts"],
"rules": {
// These globals don't exist outside of CJS files.
"no-restricted-globals": ["error",
{ "name": "__filename" },
{ "name": "__dirname" },
{ "name": "require" },
{ "name": "module" },
{ "name": "exports" }
]
}
},
{
// These files contain imports in a specific order that are generally unsafe to modify.
"files": ["**/_namespaces/**"],
"rules": {
"simple-import-sort/imports": "off",
"simple-import-sort/exports": "off"
}
}
]
}