alxshelepenok/gatsby-starter-lumen

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

  each(
    ...table: Array<Array<mixed> | mixed> | [Array<string>, string]
  ): (
    name: JestTestName,
    fn?: (...args: Array<any>) => ?Promise<mixed>,
Severity: Major
Found in flow-typed/npm/jest_v24.x.x.js and 1 other location - About 2 hrs to fix
flow-typed/npm/jest_v24.x.x.js on lines 1067..1073

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 86.

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

  each(
    ...table: Array<Array<mixed> | mixed> | [Array<string>, string]
  ): (
    name: JestTestName,
    fn?: (...args: Array<any>) => ?Promise<mixed>,
Severity: Major
Found in flow-typed/npm/jest_v24.x.x.js and 1 other location - About 2 hrs to fix
flow-typed/npm/jest_v24.x.x.js on lines 984..990

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 86.

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 getIcon has 55 lines of code (exceeds 25 allowed). Consider refactoring.
Open

const getIcon = (name: string) => {
  let icon;

  switch (name) {
    case 'twitter':
Severity: Major
Found in src/utils/get-icon.js - About 2 hrs to fix

    Function getContactHref has 52 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

    const getContactHref = (name: string, contact: string) => {
      let href;
    
      switch (name) {
        case 'twitter':
    Severity: Major
    Found in src/utils/get-contact-href.js - About 2 hrs to fix

      Function useSiteMetadata has 43 lines of code (exceeds 25 allowed). Consider refactoring.
      Open

      const useSiteMetadata = () => {
        const { site } = useStaticQuery(
          graphql`
            query SiteMetaData {
              site {
      Severity: Minor
      Found in src/hooks/use-site-metadata.js - About 1 hr to fix

        Function exports has 34 lines of code (exceeds 25 allowed). Consider refactoring.
        Open

        module.exports = async (graphql, actions) => {
          const { createPage } = actions;
          const { postsPerPage } = siteConfig;
        
          const result = await graphql(`
        Severity: Minor
        Found in gatsby/pagination/create-categories-pages.js - About 1 hr to fix

          Function exports has 34 lines of code (exceeds 25 allowed). Consider refactoring.
          Open

          module.exports = async (graphql, actions) => {
            const { createPage } = actions;
            const { postsPerPage } = siteConfig;
          
            const result = await graphql(`
          Severity: Minor
          Found in gatsby/pagination/create-tags-pages.js - About 1 hr to fix

            Function onCreateNode has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.
            Open

            const onCreateNode = ({ node, actions, getNode }) => {
              const { createNodeField } = actions;
            
              if (node.internal.type === 'MarkdownRemark') {
                if (typeof node.frontmatter.slug !== 'undefined') {
            Severity: Minor
            Found in gatsby/on-create-node.js - About 45 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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