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yannickcr/eslint-plugin-react

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Showing 710 of 710 total issues

Similar blocks of code found in 16 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Disallow declaring unused methods of component class',
      category: 'Best Practices',
      recommended: false,
Severity: Major
Found in lib/rules/no-unused-class-component-methods.js and 15 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 44..55
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-deprecated.js on lines 120..131
lib/rules/no-find-dom-node.js on lines 21..32
lib/rules/no-is-mounted.js on lines 22..33
lib/rules/no-namespace.js on lines 23..34
lib/rules/no-redundant-should-component-update.js on lines 22..33
lib/rules/no-render-return-value.js on lines 22..33
lib/rules/no-set-state.js on lines 24..35
lib/rules/no-this-in-sfc.js on lines 21..32
lib/rules/no-typos.js on lines 34..45
lib/rules/no-unused-state.js on lines 83..94
lib/rules/prefer-exact-props.js on lines 27..36
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 27..38

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Enforce sandbox attribute on iframe elements',
      category: 'Best Practices',
      recommended: false,
Severity: Minor
Found in lib/rules/iframe-missing-sandbox.js and 1 other location - About 35 mins to fix
lib/rules/no-adjacent-inline-elements.js on lines 82..92

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 3 locations. Consider refactoring.
Open

module.exports = {
  plugins: { react: plugin },
  rules: legacyConfig.rules,
  languageOptions: { parserOptions: legacyConfig.parserOptions },
};
Severity: Minor
Found in configs/recommended.js and 2 other locations - About 35 mins to fix
configs/all.js on lines 7..11
configs/jsx-runtime.js on lines 7..11

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 16 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Disallow usage of Array index in keys',
      category: 'Best Practices',
      recommended: false,
Severity: Major
Found in lib/rules/no-array-index-key.js and 15 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 44..55
lib/rules/no-deprecated.js on lines 120..131
lib/rules/no-find-dom-node.js on lines 21..32
lib/rules/no-is-mounted.js on lines 22..33
lib/rules/no-namespace.js on lines 23..34
lib/rules/no-redundant-should-component-update.js on lines 22..33
lib/rules/no-render-return-value.js on lines 22..33
lib/rules/no-set-state.js on lines 24..35
lib/rules/no-this-in-sfc.js on lines 21..32
lib/rules/no-typos.js on lines 34..45
lib/rules/no-unused-class-component-methods.js on lines 103..112
lib/rules/no-unused-state.js on lines 83..94
lib/rules/prefer-exact-props.js on lines 27..36
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 27..38

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 16 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Enforce that namespaces are not used in React elements',
      category: 'Possible Errors',
      recommended: false,
Severity: Major
Found in lib/rules/no-namespace.js and 15 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 44..55
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-deprecated.js on lines 120..131
lib/rules/no-find-dom-node.js on lines 21..32
lib/rules/no-is-mounted.js on lines 22..33
lib/rules/no-redundant-should-component-update.js on lines 22..33
lib/rules/no-render-return-value.js on lines 22..33
lib/rules/no-set-state.js on lines 24..35
lib/rules/no-this-in-sfc.js on lines 21..32
lib/rules/no-typos.js on lines 34..45
lib/rules/no-unused-class-component-methods.js on lines 103..112
lib/rules/no-unused-state.js on lines 83..94
lib/rules/prefer-exact-props.js on lines 27..36
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 27..38

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 16 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Disallow usage of isMounted',
      category: 'Best Practices',
      recommended: true,
Severity: Major
Found in lib/rules/no-is-mounted.js and 15 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 44..55
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-deprecated.js on lines 120..131
lib/rules/no-find-dom-node.js on lines 21..32
lib/rules/no-namespace.js on lines 23..34
lib/rules/no-redundant-should-component-update.js on lines 22..33
lib/rules/no-render-return-value.js on lines 22..33
lib/rules/no-set-state.js on lines 24..35
lib/rules/no-this-in-sfc.js on lines 21..32
lib/rules/no-typos.js on lines 34..45
lib/rules/no-unused-class-component-methods.js on lines 103..112
lib/rules/no-unused-state.js on lines 83..94
lib/rules/prefer-exact-props.js on lines 27..36
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 27..38

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

    if (expr.type === 'Literal') {
      return typeof expr.value === 'string' && expr.value.toLowerCase() === '_blank';
    }
Severity: Minor
Found in lib/rules/jsx-no-target-blank.js and 1 other location - About 35 mins to fix
lib/rules/jsx-no-target-blank.js on lines 32..34

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 16 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Disallow common typos',
      category: 'Stylistic Issues',
      recommended: false,
Severity: Major
Found in lib/rules/no-typos.js and 15 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 44..55
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-deprecated.js on lines 120..131
lib/rules/no-find-dom-node.js on lines 21..32
lib/rules/no-is-mounted.js on lines 22..33
lib/rules/no-namespace.js on lines 23..34
lib/rules/no-redundant-should-component-update.js on lines 22..33
lib/rules/no-render-return-value.js on lines 22..33
lib/rules/no-set-state.js on lines 24..35
lib/rules/no-this-in-sfc.js on lines 21..32
lib/rules/no-unused-class-component-methods.js on lines 103..112
lib/rules/no-unused-state.js on lines 83..94
lib/rules/prefer-exact-props.js on lines 27..36
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 27..38

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 16 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Disallow `this` from being used in stateless functional components',
      category: 'Possible Errors',
      recommended: false,
Severity: Major
Found in lib/rules/no-this-in-sfc.js and 15 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 44..55
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-deprecated.js on lines 120..131
lib/rules/no-find-dom-node.js on lines 21..32
lib/rules/no-is-mounted.js on lines 22..33
lib/rules/no-namespace.js on lines 23..34
lib/rules/no-redundant-should-component-update.js on lines 22..33
lib/rules/no-render-return-value.js on lines 22..33
lib/rules/no-set-state.js on lines 24..35
lib/rules/no-typos.js on lines 34..45
lib/rules/no-unused-class-component-methods.js on lines 103..112
lib/rules/no-unused-state.js on lines 83..94
lib/rules/prefer-exact-props.js on lines 27..36
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 27..38

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 16 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Disallow usage of setState',
      category: 'Stylistic Issues',
      recommended: false,
Severity: Major
Found in lib/rules/no-set-state.js and 15 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 44..55
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-deprecated.js on lines 120..131
lib/rules/no-find-dom-node.js on lines 21..32
lib/rules/no-is-mounted.js on lines 22..33
lib/rules/no-namespace.js on lines 23..34
lib/rules/no-redundant-should-component-update.js on lines 22..33
lib/rules/no-render-return-value.js on lines 22..33
lib/rules/no-this-in-sfc.js on lines 21..32
lib/rules/no-typos.js on lines 34..45
lib/rules/no-unused-class-component-methods.js on lines 103..112
lib/rules/no-unused-state.js on lines 83..94
lib/rules/prefer-exact-props.js on lines 27..36
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 27..38

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 16 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Prefer exact proptype definitions',
      category: 'Possible Errors',
      recommended: false,
Severity: Major
Found in lib/rules/prefer-exact-props.js and 15 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 44..55
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-deprecated.js on lines 120..131
lib/rules/no-find-dom-node.js on lines 21..32
lib/rules/no-is-mounted.js on lines 22..33
lib/rules/no-namespace.js on lines 23..34
lib/rules/no-redundant-should-component-update.js on lines 22..33
lib/rules/no-render-return-value.js on lines 22..33
lib/rules/no-set-state.js on lines 24..35
lib/rules/no-this-in-sfc.js on lines 21..32
lib/rules/no-typos.js on lines 34..45
lib/rules/no-unused-class-component-methods.js on lines 103..112
lib/rules/no-unused-state.js on lines 83..94
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 27..38

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

      if (
        isPropUsed && configuration === 'always'
        && !(ignoreClassFields && isInClassProperty(node))
      ) {
        report(context, messages.useDestructAssignment, 'useDestructAssignment', {
Severity: Minor
Found in lib/rules/destructuring-assignment.js and 1 other location - About 35 mins to fix
lib/rules/destructuring-assignment.js on lines 269..279

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 16 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Disallow comments from being inserted as text nodes',
      category: 'Possible Errors',
      recommended: true,
Severity: Major
Found in lib/rules/jsx-no-comment-textnodes.js and 15 other locations - About 35 mins to fix
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-deprecated.js on lines 120..131
lib/rules/no-find-dom-node.js on lines 21..32
lib/rules/no-is-mounted.js on lines 22..33
lib/rules/no-namespace.js on lines 23..34
lib/rules/no-redundant-should-component-update.js on lines 22..33
lib/rules/no-render-return-value.js on lines 22..33
lib/rules/no-set-state.js on lines 24..35
lib/rules/no-this-in-sfc.js on lines 21..32
lib/rules/no-typos.js on lines 34..45
lib/rules/no-unused-class-component-methods.js on lines 103..112
lib/rules/no-unused-state.js on lines 83..94
lib/rules/prefer-exact-props.js on lines 27..36
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 27..38

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 16 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Enforce ES5 or ES6 class for returning value in render function',
      category: 'Possible Errors',
      recommended: true,
Severity: Major
Found in lib/rules/require-render-return.js and 15 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 44..55
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-deprecated.js on lines 120..131
lib/rules/no-find-dom-node.js on lines 21..32
lib/rules/no-is-mounted.js on lines 22..33
lib/rules/no-namespace.js on lines 23..34
lib/rules/no-redundant-should-component-update.js on lines 22..33
lib/rules/no-render-return-value.js on lines 22..33
lib/rules/no-set-state.js on lines 24..35
lib/rules/no-this-in-sfc.js on lines 21..32
lib/rules/no-typos.js on lines 34..45
lib/rules/no-unused-class-component-methods.js on lines 103..112
lib/rules/no-unused-state.js on lines 83..94
lib/rules/prefer-exact-props.js on lines 27..36
lib/rules/react-in-jsx-scope.js on lines 23..34

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 3 locations. Consider refactoring.
Open

module.exports = {
  plugins: { react: plugin },
  rules: legacyConfig.rules,
  languageOptions: { parserOptions: legacyConfig.parserOptions },
};
Severity: Minor
Found in configs/jsx-runtime.js and 2 other locations - About 35 mins to fix
configs/all.js on lines 7..11
configs/recommended.js on lines 7..11

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

        if (
          classComponent && destructuringClass && configuration === 'never'
          && !(ignoreClassFields && (node.parent.type === 'ClassProperty' || node.parent.type === 'PropertyDefinition'))
        ) {
          report(context, messages.noDestructAssignment, 'noDestructAssignment', {
Severity: Minor
Found in lib/rules/destructuring-assignment.js and 1 other location - About 35 mins to fix
lib/rules/destructuring-assignment.js on lines 171..181

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 47.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Function usedPropTypesAreEquivalent has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
Open

function usedPropTypesAreEquivalent(propA, propB) {
  if (propA.name === propB.name) {
    if (!propA.allNames && !propB.allNames) {
      return true;
    }
Severity: Minor
Found in lib/util/Components.js - About 35 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function create has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
Open

  create: Components.detect((context, components, utils) => ({
    MemberExpression(node) {
      if (node.object.type === 'ThisExpression') {
        const component = components.get(utils.getParentStatelessComponent(node));
        if (!component || (component.node && component.node.parent && component.node.parent.type === 'Property')) {
Severity: Minor
Found in lib/rules/no-this-in-sfc.js - About 35 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function isComponentInRenderProp has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
Open

function isComponentInRenderProp(node, context, propNamePattern) {
  if (
    node
    && node.parent
    && node.parent.type === 'Property'
Severity: Minor
Found in lib/rules/no-unstable-nested-components.js - About 35 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function isCreateCloneElement has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
Open

function isCreateCloneElement(node, context) {
  if (!node) {
    return false;
  }
Severity: Minor
Found in lib/rules/no-array-index-key.js - About 35 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

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