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yannickcr/eslint-plugin-react

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Showing 195 of 696 total issues

Similar blocks of code found in 17 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Disallow usage of dangerous JSX properties',
      category: 'Best Practices',
      recommended: false,
Severity: Major
Found in lib/rules/no-danger.js and 16 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 38..49
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-deprecated.js on lines 118..129
lib/rules/no-find-dom-node.js on lines 20..31
lib/rules/no-is-mounted.js on lines 20..31
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 21..32
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 33..44
lib/rules/no-unused-class-component-methods.js on lines 102..111
lib/rules/no-unused-state.js on lines 81..92
lib/rules/prefer-exact-props.js on lines 25..34
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 26..37

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 17 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 16 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 38..49
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-danger.js on lines 48..59
lib/rules/no-deprecated.js on lines 118..129
lib/rules/no-find-dom-node.js on lines 20..31
lib/rules/no-is-mounted.js on lines 20..31
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 21..32
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 33..44
lib/rules/no-unused-class-component-methods.js on lines 102..111
lib/rules/no-unused-state.js on lines 81..92
lib/rules/prefer-exact-props.js on lines 25..34
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

Similar blocks of code found in 17 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Disallow usage of deprecated methods',
      category: 'Best Practices',
      recommended: true,
Severity: Major
Found in lib/rules/no-deprecated.js and 16 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 38..49
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-danger.js on lines 48..59
lib/rules/no-find-dom-node.js on lines 20..31
lib/rules/no-is-mounted.js on lines 20..31
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 21..32
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 33..44
lib/rules/no-unused-class-component-methods.js on lines 102..111
lib/rules/no-unused-state.js on lines 81..92
lib/rules/prefer-exact-props.js on lines 25..34
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 26..37

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 2 locations. Consider refactoring.
Open

  const result = semver.coerce(confVer.split('.').map((part) => Number(part)).join('.'));
Severity: Minor
Found in lib/util/version.js and 1 other location - About 35 mins to fix
lib/util/version.js on lines 95..95

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 3 locations. Consider refactoring.
Open

module.exports = {
  isPropTypesDeclaration,
  isContextTypesDeclaration,
  isContextTypeDeclaration,
  isChildContextTypesDeclaration,
Severity: Minor
Found in lib/util/props.js and 2 other locations - About 35 mins to fix
lib/util/componentUtil.js on lines 174..182
lib/util/jsx.js on lines 188..196

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 17 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Disallow usage of findDOMNode',
      category: 'Best Practices',
      recommended: true,
Severity: Major
Found in lib/rules/no-find-dom-node.js and 16 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 38..49
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-danger.js on lines 48..59
lib/rules/no-deprecated.js on lines 118..129
lib/rules/no-is-mounted.js on lines 20..31
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 21..32
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 33..44
lib/rules/no-unused-class-component-methods.js on lines 102..111
lib/rules/no-unused-state.js on lines 81..92
lib/rules/prefer-exact-props.js on lines 25..34
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 26..37

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 17 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Disallow usage of shouldComponentUpdate when extending React.PureComponent',
      category: 'Possible Errors',
      recommended: false,
Severity: Major
Found in lib/rules/no-redundant-should-component-update.js and 16 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 38..49
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-danger.js on lines 48..59
lib/rules/no-deprecated.js on lines 118..129
lib/rules/no-find-dom-node.js on lines 20..31
lib/rules/no-is-mounted.js on lines 20..31
lib/rules/no-namespace.js on lines 23..34
lib/rules/no-render-return-value.js on lines 21..32
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 33..44
lib/rules/no-unused-class-component-methods.js on lines 102..111
lib/rules/no-unused-state.js on lines 81..92
lib/rules/prefer-exact-props.js on lines 25..34
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 26..37

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 167..177

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 3 locations. Consider refactoring.
Open

module.exports = {
  isDOMComponent,
  isFragment,
  isJSX,
  isJSXAttributeKey,
Severity: Minor
Found in lib/util/jsx.js and 2 other locations - About 35 mins to fix
lib/util/componentUtil.js on lines 174..182
lib/util/props.js on lines 95..103

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 232..242

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 80..90

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 17 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 16 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 38..49
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-danger.js on lines 48..59
lib/rules/no-deprecated.js on lines 118..129
lib/rules/no-find-dom-node.js on lines 20..31
lib/rules/no-is-mounted.js on lines 20..31
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 21..32
lib/rules/no-set-state.js on lines 24..35
lib/rules/no-typos.js on lines 33..44
lib/rules/no-unused-class-component-methods.js on lines 102..111
lib/rules/no-unused-state.js on lines 81..92
lib/rules/prefer-exact-props.js on lines 25..34
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 26..37

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 (value.type === 'Literal') {
    return typeof value.value === 'string' && value.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 37..39

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 17 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 16 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 38..49
lib/rules/no-danger.js on lines 48..59
lib/rules/no-deprecated.js on lines 118..129
lib/rules/no-find-dom-node.js on lines 20..31
lib/rules/no-is-mounted.js on lines 20..31
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 21..32
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 33..44
lib/rules/no-unused-class-component-methods.js on lines 102..111
lib/rules/no-unused-state.js on lines 81..92
lib/rules/prefer-exact-props.js on lines 25..34
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 26..37

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 17 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 16 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 38..49
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-danger.js on lines 48..59
lib/rules/no-deprecated.js on lines 118..129
lib/rules/no-find-dom-node.js on lines 20..31
lib/rules/no-is-mounted.js on lines 20..31
lib/rules/no-redundant-should-component-update.js on lines 22..33
lib/rules/no-render-return-value.js on lines 21..32
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 33..44
lib/rules/no-unused-class-component-methods.js on lines 102..111
lib/rules/no-unused-state.js on lines 81..92
lib/rules/prefer-exact-props.js on lines 25..34
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 26..37

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 17 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 16 other locations - About 35 mins to fix
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-danger.js on lines 48..59
lib/rules/no-deprecated.js on lines 118..129
lib/rules/no-find-dom-node.js on lines 20..31
lib/rules/no-is-mounted.js on lines 20..31
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 21..32
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 33..44
lib/rules/no-unused-class-component-methods.js on lines 102..111
lib/rules/no-unused-state.js on lines 81..92
lib/rules/prefer-exact-props.js on lines 25..34
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 26..37

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 17 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 16 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 38..49
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-danger.js on lines 48..59
lib/rules/no-deprecated.js on lines 118..129
lib/rules/no-find-dom-node.js on lines 20..31
lib/rules/no-is-mounted.js on lines 20..31
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 21..32
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 33..44
lib/rules/no-unused-state.js on lines 81..92
lib/rules/prefer-exact-props.js on lines 25..34
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 26..37

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 17 locations. Consider refactoring.
Open

  meta: {
    docs: {
      description: 'Disallow usage of the return value of ReactDOM.render',
      category: 'Best Practices',
      recommended: true,
Severity: Major
Found in lib/rules/no-render-return-value.js and 16 other locations - About 35 mins to fix
lib/rules/jsx-no-comment-textnodes.js on lines 38..49
lib/rules/no-array-index-key.js on lines 46..57
lib/rules/no-danger.js on lines 48..59
lib/rules/no-deprecated.js on lines 118..129
lib/rules/no-find-dom-node.js on lines 20..31
lib/rules/no-is-mounted.js on lines 20..31
lib/rules/no-namespace.js on lines 23..34
lib/rules/no-redundant-should-component-update.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 33..44
lib/rules/no-unused-class-component-methods.js on lines 102..111
lib/rules/no-unused-state.js on lines 81..92
lib/rules/prefer-exact-props.js on lines 25..34
lib/rules/react-in-jsx-scope.js on lines 23..34
lib/rules/require-render-return.js on lines 26..37

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 2 locations. Consider refactoring.
Open

        const jsxValueAttribute = node.attributes.find(
          (attribute) => attribute.type === 'JSXAttribute' && attribute.name.name === 'value'
        );
Severity: Minor
Found in lib/rules/jsx-no-constructed-context-values.js and 1 other location - About 35 mins to fix
lib/rules/forbid-foreign-prop-types.js on lines 124..124

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 46.

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

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