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feat(eslint-plugin): add extension rule `no-loop-func` (#2490)

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@bradzacher
bradzacher committed Sep 5, 2020
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1 parent cee9be7 commit 36305df74b3c26b60364f7ec13390be492b4b2ec
61 packages/eslint-plugin/README.md
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@@ -185,36 +185,37 @@ In these cases, we create what we call an extension rule; a rule within our plug

**Key**: :heavy_check_mark: = recommended, :wrench: = fixable, :thought_balloon: = requires type information

| Name | Description | :heavy_check_mark: | :wrench: | :thought_balloon: |
| ----------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------- | ------------------ | -------- | ----------------- |
| [`@typescript-eslint/brace-style`](./docs/rules/brace-style.md) | Enforce consistent brace style for blocks | | :wrench: | |
| [`@typescript-eslint/comma-spacing`](./docs/rules/comma-spacing.md) | Enforces consistent spacing before and after commas | | :wrench: | |
| [`@typescript-eslint/default-param-last`](./docs/rules/default-param-last.md) | Enforce default parameters to be last | | | |
| [`@typescript-eslint/dot-notation`](./docs/rules/dot-notation.md) | enforce dot notation whenever possible | | :wrench: | :thought_balloon: |
| [`@typescript-eslint/func-call-spacing`](./docs/rules/func-call-spacing.md) | Require or disallow spacing between function identifiers and their invocations | | :wrench: | |
| [`@typescript-eslint/indent`](./docs/rules/indent.md) | Enforce consistent indentation | | :wrench: | |
| [`@typescript-eslint/init-declarations`](./docs/rules/init-declarations.md) | require or disallow initialization in variable declarations | | | |
| [`@typescript-eslint/keyword-spacing`](./docs/rules/keyword-spacing.md) | Enforce consistent spacing before and after keywords | | :wrench: | |
| [`@typescript-eslint/lines-between-class-members`](./docs/rules/lines-between-class-members.md) | Require or disallow an empty line between class members | | :wrench: | |
| [`@typescript-eslint/no-array-constructor`](./docs/rules/no-array-constructor.md) | Disallow generic `Array` constructors | :heavy_check_mark: | :wrench: | |
| [`@typescript-eslint/no-dupe-class-members`](./docs/rules/no-dupe-class-members.md) | Disallow duplicate class members | | | |
| [`@typescript-eslint/no-empty-function`](./docs/rules/no-empty-function.md) | Disallow empty functions | :heavy_check_mark: | | |
| [`@typescript-eslint/no-extra-parens`](./docs/rules/no-extra-parens.md) | Disallow unnecessary parentheses | | :wrench: | |
| [`@typescript-eslint/no-extra-semi`](./docs/rules/no-extra-semi.md) | Disallow unnecessary semicolons | :heavy_check_mark: | :wrench: | |
| [`@typescript-eslint/no-invalid-this`](./docs/rules/no-invalid-this.md) | disallow `this` keywords outside of classes or class-like objects | | | |
| [`@typescript-eslint/no-loss-of-precision`](./docs/rules/no-loss-of-precision.md) | Disallow literal numbers that lose precision | | | |
| [`@typescript-eslint/no-magic-numbers`](./docs/rules/no-magic-numbers.md) | Disallow magic numbers | | | |
| [`@typescript-eslint/no-redeclare`](./docs/rules/no-redeclare.md) | Disallow variable redeclaration | | | |
| [`@typescript-eslint/no-shadow`](./docs/rules/no-shadow.md) | Disallow variable declarations from shadowing variables declared in the outer scope | | | |
| [`@typescript-eslint/no-unused-expressions`](./docs/rules/no-unused-expressions.md) | Disallow unused expressions | | | |
| [`@typescript-eslint/no-unused-vars`](./docs/rules/no-unused-vars.md) | Disallow unused variables | :heavy_check_mark: | | |
| [`@typescript-eslint/no-use-before-define`](./docs/rules/no-use-before-define.md) | Disallow the use of variables before they are defined | | | |
| [`@typescript-eslint/no-useless-constructor`](./docs/rules/no-useless-constructor.md) | Disallow unnecessary constructors | | | |
| [`@typescript-eslint/quotes`](./docs/rules/quotes.md) | Enforce the consistent use of either backticks, double, or single quotes | | :wrench: | |
| [`@typescript-eslint/require-await`](./docs/rules/require-await.md) | Disallow async functions which have no `await` expression | :heavy_check_mark: | | :thought_balloon: |
| [`@typescript-eslint/return-await`](./docs/rules/return-await.md) | Enforces consistent returning of awaited values | | :wrench: | :thought_balloon: |
| [`@typescript-eslint/semi`](./docs/rules/semi.md) | Require or disallow semicolons instead of ASI | | :wrench: | |
| [`@typescript-eslint/space-before-function-paren`](./docs/rules/space-before-function-paren.md) | Enforces consistent spacing before function parenthesis | | :wrench: | |
| Name | Description | :heavy_check_mark: | :wrench: | :thought_balloon: |
| ----------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------ | ------------------ | -------- | ----------------- |
| [`@typescript-eslint/brace-style`](./docs/rules/brace-style.md) | Enforce consistent brace style for blocks | | :wrench: | |
| [`@typescript-eslint/comma-spacing`](./docs/rules/comma-spacing.md) | Enforces consistent spacing before and after commas | | :wrench: | |
| [`@typescript-eslint/default-param-last`](./docs/rules/default-param-last.md) | Enforce default parameters to be last | | | |
| [`@typescript-eslint/dot-notation`](./docs/rules/dot-notation.md) | enforce dot notation whenever possible | | :wrench: | :thought_balloon: |
| [`@typescript-eslint/func-call-spacing`](./docs/rules/func-call-spacing.md) | Require or disallow spacing between function identifiers and their invocations | | :wrench: | |
| [`@typescript-eslint/indent`](./docs/rules/indent.md) | Enforce consistent indentation | | :wrench: | |
| [`@typescript-eslint/init-declarations`](./docs/rules/init-declarations.md) | require or disallow initialization in variable declarations | | | |
| [`@typescript-eslint/keyword-spacing`](./docs/rules/keyword-spacing.md) | Enforce consistent spacing before and after keywords | | :wrench: | |
| [`@typescript-eslint/lines-between-class-members`](./docs/rules/lines-between-class-members.md) | Require or disallow an empty line between class members | | :wrench: | |
| [`@typescript-eslint/no-array-constructor`](./docs/rules/no-array-constructor.md) | Disallow generic `Array` constructors | :heavy_check_mark: | :wrench: | |
| [`@typescript-eslint/no-dupe-class-members`](./docs/rules/no-dupe-class-members.md) | Disallow duplicate class members | | | |
| [`@typescript-eslint/no-empty-function`](./docs/rules/no-empty-function.md) | Disallow empty functions | :heavy_check_mark: | | |
| [`@typescript-eslint/no-extra-parens`](./docs/rules/no-extra-parens.md) | Disallow unnecessary parentheses | | :wrench: | |
| [`@typescript-eslint/no-extra-semi`](./docs/rules/no-extra-semi.md) | Disallow unnecessary semicolons | :heavy_check_mark: | :wrench: | |
| [`@typescript-eslint/no-invalid-this`](./docs/rules/no-invalid-this.md) | disallow `this` keywords outside of classes or class-like objects | | | |
| [`@typescript-eslint/no-loop-func`](./docs/rules/no-loop-func.md) | Disallow function declarations that contain unsafe references inside loop statements | | | |
| [`@typescript-eslint/no-loss-of-precision`](./docs/rules/no-loss-of-precision.md) | Disallow literal numbers that lose precision | | | |
| [`@typescript-eslint/no-magic-numbers`](./docs/rules/no-magic-numbers.md) | Disallow magic numbers | | | |
| [`@typescript-eslint/no-redeclare`](./docs/rules/no-redeclare.md) | Disallow variable redeclaration | | | |
| [`@typescript-eslint/no-shadow`](./docs/rules/no-shadow.md) | Disallow variable declarations from shadowing variables declared in the outer scope | | | |
| [`@typescript-eslint/no-unused-expressions`](./docs/rules/no-unused-expressions.md) | Disallow unused expressions | | | |
| [`@typescript-eslint/no-unused-vars`](./docs/rules/no-unused-vars.md) | Disallow unused variables | :heavy_check_mark: | | |
| [`@typescript-eslint/no-use-before-define`](./docs/rules/no-use-before-define.md) | Disallow the use of variables before they are defined | | | |
| [`@typescript-eslint/no-useless-constructor`](./docs/rules/no-useless-constructor.md) | Disallow unnecessary constructors | | | |
| [`@typescript-eslint/quotes`](./docs/rules/quotes.md) | Enforce the consistent use of either backticks, double, or single quotes | | :wrench: | |
| [`@typescript-eslint/require-await`](./docs/rules/require-await.md) | Disallow async functions which have no `await` expression | :heavy_check_mark: | | :thought_balloon: |
| [`@typescript-eslint/return-await`](./docs/rules/return-await.md) | Enforces consistent returning of awaited values | | :wrench: | :thought_balloon: |
| [`@typescript-eslint/semi`](./docs/rules/semi.md) | Require or disallow semicolons instead of ASI | | :wrench: | |
| [`@typescript-eslint/space-before-function-paren`](./docs/rules/space-before-function-paren.md) | Enforces consistent spacing before function parenthesis | | :wrench: | |

<!-- end extension rule list -->

22 packages/eslint-plugin/docs/rules/no-loop-func.md
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@@ -0,0 +1,22 @@
# Disallow function declarations that contain unsafe references inside loop statements (`no-loop-func`)

## Rule Details

This rule extends the base [`eslint/no-loop-func`](https://eslint.org/docs/rules/no-loop-func) rule.
It adds support for TypeScript types.

## How to use

```cjson
{
// note you must disable the base rule as it can report incorrect errors
"no-loop-func": "off",
"@typescript-eslint/no-loop-func": ["error"]
}
```

## Options

See [`eslint/no-loop-func` options](https://eslint.org/docs/rules/no-loop-func#options).

<sup>Taken with ❤️ [from ESLint core](https://github.com/eslint/eslint/blob/master/docs/rules/no-loop-func.md)</sup>
2 packages/eslint-plugin/src/configs/all.ts
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@@ -65,6 +65,8 @@ export = {
'no-invalid-this': 'off',
'@typescript-eslint/no-invalid-this': 'error',
'@typescript-eslint/no-invalid-void-type': 'error',
'no-loop-func': 'off',
'@typescript-eslint/no-loop-func': 'error',
'no-loss-of-precision': 'off',
'@typescript-eslint/no-loss-of-precision': 'error',
'no-magic-numbers': 'off',
18 packages/eslint-plugin/src/rules/index.ts
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@@ -45,6 +45,7 @@ import noInferrableTypes from './no-inferrable-types';
import noInvalidThis from './no-invalid-this';
import noInvalidVoidType from './no-invalid-void-type';
import noLossOfPrecision from './no-loss-of-precision';
import noLoopFunc from './no-loop-func';
import noMagicNumbers from './no-magic-numbers';
import noMisusedNew from './no-misused-new';
import noMisusedPromises from './no-misused-promises';
@@ -114,7 +115,6 @@ export default {
'brace-style': braceStyle,
'class-literal-property-style': classLiteralPropertyStyle,
'comma-spacing': commaSpacing,
'no-confusing-non-null-assertion': confusingNonNullAssertionLikeNotEqual,
'consistent-type-assertions': consistentTypeAssertions,
'consistent-type-definitions': consistentTypeDefinitions,
'consistent-type-imports': consistentTypeImports,
@@ -124,31 +124,34 @@ export default {
'explicit-member-accessibility': explicitMemberAccessibility,
'explicit-module-boundary-types': explicitModuleBoundaryTypes,
'func-call-spacing': funcCallSpacing,
indent: indent,
'init-declarations': initDeclarations,
'keyword-spacing': keywordSpacing,
'lines-between-class-members': linesBetweenClassMembers,
'member-delimiter-style': memberDelimiterStyle,
'member-ordering': memberOrdering,
'method-signature-style': methodSignatureStyle,
'naming-convention': namingConvention,
'no-array-constructor': noArrayConstructor,
'no-base-to-string': noBaseToString,
'no-confusing-non-null-assertion': confusingNonNullAssertionLikeNotEqual,
'no-dupe-class-members': noDupeClassMembers,
'no-dynamic-delete': noDynamicDelete,
'no-empty-function': noEmptyFunction,
'no-empty-interface': noEmptyInterface,
'no-explicit-any': noExplicitAny,
'no-implicit-any-catch': noImplicitAnyCatch,
'no-extra-non-null-assertion': noExtraNonNullAssertion,
'no-extra-parens': noExtraParens,
'no-extra-semi': noExtraSemi,
'no-extraneous-class': noExtraneousClass,
'no-floating-promises': noFloatingPromises,
'no-for-in-array': noForInArray,
'no-implicit-any-catch': noImplicitAnyCatch,
'no-implied-eval': noImpliedEval,
'no-inferrable-types': noInferrableTypes,
'no-invalid-this': noInvalidThis,
'no-invalid-void-type': noInvalidVoidType,
'no-loop-func': noLoopFunc,
'no-loss-of-precision': noLossOfPrecision,
'no-magic-numbers': noMagicNumbers,
'no-misused-new': noMisusedNew,
'no-misused-promises': noMisusedPromises,
@@ -193,21 +196,20 @@ export default {
'prefer-string-starts-ends-with': preferStringStartsEndsWith,
'prefer-ts-expect-error': preferTsExpectError,
'promise-function-async': promiseFunctionAsync,
quotes: quotes,
'require-array-sort-compare': requireArraySortCompare,
'require-await': requireAwait,
'restrict-plus-operands': restrictPlusOperands,
'restrict-template-expressions': restrictTemplateExpressions,
'return-await': returnAwait,
semi: semi,
'space-before-function-paren': spaceBeforeFunctionParen,
'strict-boolean-expressions': strictBooleanExpressions,
'switch-exhaustiveness-check': switchExhaustivenessCheck,
'triple-slash-reference': tripleSlashReference,
'type-annotation-spacing': typeAnnotationSpacing,
typedef: typedef,
'unbound-method': unboundMethod,
'unified-signatures': unifiedSignatures,
'lines-between-class-members': linesBetweenClassMembers,
'no-loss-of-precision': noLossOfPrecision,
indent: indent,
quotes: quotes,
semi: semi,
typedef: typedef,
};

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