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Avoid too many return statements within this function.
Open

    return false;
Severity: Major
Found in src/is/tabbable.js - About 30 mins to fix

    Avoid too many return statements within this function.
    Open

            return false;
    Severity: Major
    Found in src/is/tabbable.js - About 30 mins to fix

      Avoid too many return statements within this function.
      Open

          return true;
      Severity: Major
      Found in src/is/focus-relevant.js - About 30 mins to fix

        Avoid too many return statements within this function.
        Open

            return true;
        Severity: Major
        Found in src/is/focus-relevant.js - About 30 mins to fix

          Avoid too many return statements within this function.
          Open

                return focusableAttribute === 'true';
          Severity: Major
          Found in src/is/focus-relevant.js - About 30 mins to fix

            Avoid too many return statements within this function.
            Open

              return false;
            Severity: Major
            Found in src/is/focusable.js - About 30 mins to fix

              Avoid too many return statements within this function.
              Open

                    return true;
              Severity: Major
              Found in src/is/tabbable.js - About 30 mins to fix

                Avoid too many return statements within this function.
                Open

                        return false;
                Severity: Major
                Found in src/is/tabbable.js - About 30 mins to fix

                  Avoid too many return statements within this function.
                  Open

                      return true;
                  Severity: Major
                  Found in src/is/focus-relevant.js - About 30 mins to fix

                    Avoid too many return statements within this function.
                    Open

                        return true;
                    Severity: Major
                    Found in src/is/focus-relevant.js - About 30 mins to fix

                      Avoid too many return statements within this function.
                      Open

                          return true;
                      Severity: Major
                      Found in src/is/focus-relevant.js - About 30 mins to fix

                        Avoid too many return statements within this function.
                        Open

                          return true;
                        Severity: Major
                        Found in src/is/focusable.js - About 30 mins to fix

                          Avoid too many return statements within this function.
                          Open

                                return false;
                          Severity: Major
                          Found in src/is/tabbable.js - About 30 mins to fix

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

                            export default {
  element: 'span',
  mutate: function(element) {
    element.setAttribute('style', 'display: -webkit-flex; display: -ms-flexbox; display: flex;');
    element.innerHTML = '<span style="display: block;">hello</span>';
                            Severity: Minor
                            Found in src/supports/focus-flexbox-container.js and 2 other locations - About 30 mins to fix
                            src/supports/focus-scroll-container-without-overflow.js on lines 3..9
                            src/supports/focus-scroll-container.js on lines 3..9

                            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 45.

                            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

                            export default {
  element: 'div',
  mutate: function(element) {
    element.setAttribute('style', 'width: 100px; height: 50px;');
    element.innerHTML = '<div style="width: 500px; height: 40px;">scrollable content</div>';
                            Severity: Minor
                            Found in src/supports/focus-scroll-container-without-overflow.js and 2 other locations - About 30 mins to fix
                            src/supports/focus-flexbox-container.js on lines 3..9
                            src/supports/focus-scroll-container.js on lines 3..9

                            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 45.

                            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

                            export default {
  element: 'div',
  mutate: function(element) {
    element.setAttribute('style', 'width: 100px; height: 50px; overflow: auto;');
    element.innerHTML = '<div style="width: 500px; height: 40px;">scrollable content</div>';
                            Severity: Minor
                            Found in src/supports/focus-scroll-container.js and 2 other locations - About 30 mins to fix
                            src/supports/focus-flexbox-container.js on lines 3..9
                            src/supports/focus-scroll-container-without-overflow.js on lines 3..9

                            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 45.

                            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

                              validate: function(element, focusTarget, _document) {
    if (platform.is.GECKO) {
      // Firefox seems to be handling the object creation asynchronously and thereby produces a false negative test result.
      // Because we know Firefox is able to focus object elements referencing SVGs, we simply cheat by sniffing the user agent string
      return true;
                            Severity: Minor
                            Found in src/supports/focus-object-svg.js and 1 other location - About 30 mins to fix
                            src/supports/focus-area-without-href.js on lines 15..23

                            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 45.

                            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

                              validate: function(element, focusTarget, _document) {
    if (platform.is.GECKO) {
      // fixes https://github.com/medialize/ally.js/issues/35
      // Firefox loads the DataURI asynchronously, causing a false-negative
      return true;
                            Severity: Minor
                            Found in src/supports/focus-area-without-href.js and 1 other location - About 30 mins to fix
                            src/supports/focus-object-svg.js on lines 16..24

                            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 45.

                            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 addGeneratedNotes has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
                            Open

                            function addGeneratedNotes(ident, browser, browserData, data) {
  let element = browserData.elements[ident];
  if (!element) {
    element = {
      tabindexProperty: 'null',
                            Severity: Minor
                            Found in build/data-tables/utils/aggregated-focusable-data.js - About 25 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 default has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
                            Open

                            export default function({context, callback, area} = {}) {
  if (typeof callback !== 'function') {
    throw new TypeError('when/visible-area requires options.callback to be a function');
  }
                            Severity: Minor
                            Found in src/when/visible-area.js - About 25 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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