yannickcr/eslint-plugin-react

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Showing 196 of 708 total issues

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

            if (configuration === 'syntax' && !(attrs && attrs.length > 0)) {
              report(context, messages.preferFragment, 'preferFragment', {
                node,
                data: {
                  react: reactPragma,
Severity: Minor
Found in lib/rules/jsx-fragments.js and 1 other location - About 40 mins to fix
lib/rules/jsx-fragments.js on lines 158..167

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 49.

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 4 locations. Consider refactoring.
Open

        if (
          !propsUtil.isPropTypesDeclaration(node)
          && !isPropTypesPackage(node)
          && !shouldCheckContextTypes(node)
          && !shouldCheckChildContextTypes(node)
Severity: Major
Found in lib/rules/forbid-prop-types.js and 3 other locations - About 40 mins to fix
lib/rules/forbid-prop-types.js on lines 225..232
lib/rules/forbid-prop-types.js on lines 259..266
lib/rules/forbid-prop-types.js on lines 281..288

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 48.

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

    function isTokenOnSameLine(left, right) {
      return left.loc.end.line === right.loc.start.line;
    }
Severity: Minor
Found in lib/rules/jsx-curly-newline.js and 1 other location - About 40 mins to fix
lib/rules/jsx-curly-spacing.js on lines 166..168

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 48.

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

          if (
            callee.type !== 'MemberExpression'
            || callee.object.type !== 'ThisExpression'
            || callee.property.name !== 'setState'
          ) {
Severity: Minor
Found in lib/util/makeNoMethodSetStateRule.js and 1 other location - About 40 mins to fix
lib/rules/no-set-state.js on lines 63..69

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 48.

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 4 locations. Consider refactoring.
Open

        if (
          !propsUtil.isPropTypesDeclaration(node)
          && !isPropTypesPackage(node)
          && !shouldCheckContextTypes(node)
          && !shouldCheckChildContextTypes(node)
Severity: Major
Found in lib/rules/forbid-prop-types.js and 3 other locations - About 40 mins to fix
lib/rules/forbid-prop-types.js on lines 213..220
lib/rules/forbid-prop-types.js on lines 225..232
lib/rules/forbid-prop-types.js on lines 281..288

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 48.

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

        case 'props-aligned':
          indentation = /^\s*/.exec(getSourceCode(context).lines[tokens.lastProp.firstLine - 1])[0];
          break;
Severity: Minor
Found in lib/rules/jsx-closing-bracket-location.js and 1 other location - About 40 mins to fix
lib/rules/jsx-closing-bracket-location.js on lines 180..182

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 48.

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 4 locations. Consider refactoring.
Open

          if (
            !propsUtil.isPropTypesDeclaration(property)
            && !isPropTypesPackage(property)
            && !shouldCheckContextTypes(property)
            && !shouldCheckChildContextTypes(property)
Severity: Major
Found in lib/rules/forbid-prop-types.js and 3 other locations - About 40 mins to fix
lib/rules/forbid-prop-types.js on lines 213..220
lib/rules/forbid-prop-types.js on lines 225..232
lib/rules/forbid-prop-types.js on lines 259..266

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 48.

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

    function isMultiline(left, right) {
      return left.loc.end.line !== right.loc.start.line;
    }
Severity: Minor
Found in lib/rules/jsx-curly-spacing.js and 1 other location - About 40 mins to fix
lib/rules/jsx-curly-newline.js on lines 97..99

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 48.

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

        if (
          callee.type !== 'MemberExpression'
          || callee.object.type !== 'ThisExpression'
          || callee.property.name !== 'setState'
        ) {
Severity: Minor
Found in lib/rules/no-set-state.js and 1 other location - About 40 mins to fix
lib/util/makeNoMethodSetStateRule.js on lines 90..96

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 48.

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

        case 'line-aligned':
          indentation = /^\s*/.exec(getSourceCode(context).lines[tokens.opening.line - 1])[0];
          break;
Severity: Minor
Found in lib/rules/jsx-closing-bracket-location.js and 1 other location - About 40 mins to fix
lib/rules/jsx-closing-bracket-location.js on lines 176..178

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 48.

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 4 locations. Consider refactoring.
Open

        if (
          !propsUtil.isPropTypesDeclaration(node)
          && !isPropTypesPackage(node)
          && !shouldCheckContextTypes(node)
          && !shouldCheckChildContextTypes(node)
Severity: Major
Found in lib/rules/forbid-prop-types.js and 3 other locations - About 40 mins to fix
lib/rules/forbid-prop-types.js on lines 213..220
lib/rules/forbid-prop-types.js on lines 259..266
lib/rules/forbid-prop-types.js on lines 281..288

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 48.

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: '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

module.exports = {
  isES5Component,
  isES6Component,
  getParentES5Component,
  getParentES6Component,
Severity: Minor
Found in lib/util/componentUtil.js and 1 other location - About 35 mins to fix
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 16 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 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-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

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

        props.properties.filter((prop) => {
          const propName = prop && prop.key && prop.key.name;
          const isPropRequired = propTypes[propName] && propTypes[propName].isRequired;
          return propTypes[propName] && !isPropRequired && isPropWithNoDefaulVal(prop);
        }).forEach((prop) => {
Severity: Minor
Found in lib/rules/require-default-props.js and 1 other location - About 35 mins to fix
lib/rules/require-default-props.js on lines 145..154

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 missing React when using JSX',
      category: 'Possible Errors',
      recommended: true,
Severity: Major
Found in lib/rules/react-in-jsx-scope.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/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

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

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