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packages/babel-helper-builder-react-jsx/src/index.js

Summary

Maintainability
F
5 days
Test Coverage

Function default has a Cognitive Complexity of 81 (exceeds 5 allowed). Consider refactoring.
Open

export default function (opts) {
  const visitor = {};

  visitor.JSXNamespacedName = function (path) {
    if (opts.throwIfNamespace) {
Severity: Minor
Found in packages/babel-helper-builder-react-jsx/src/index.js - About 1 day 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 200 lines of code (exceeds 25 allowed). Consider refactoring.
Open

export default function (opts) {
  const visitor = {};

  visitor.JSXNamespacedName = function (path) {
    if (opts.throwIfNamespace) {
Severity: Major
Found in packages/babel-helper-builder-react-jsx/src/index.js - About 1 day to fix

    Function buildOpeningElementAttributes has 48 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

      function buildOpeningElementAttributes(attribs, file) {
    let _props = [];
    const objs = [];

    const { useSpread = false } = file.opts;
    Severity: Minor
    Found in packages/babel-helper-builder-react-jsx/src/index.js - About 1 hr to fix

      Function buildElementCall has 36 lines of code (exceeds 25 allowed). Consider refactoring.
      Open

        function buildElementCall(path, file) {
    if (opts.filter && !opts.filter(path.node, file)) return;

    const openingPath = path.get("openingElement");
    openingPath.parent.children = t.react.buildChildren(openingPath.parent);
      Severity: Minor
      Found in packages/babel-helper-builder-react-jsx/src/index.js - About 1 hr to fix

        Avoid too many return statements within this function.
        Open

            return node;
        Severity: Major
        Found in packages/babel-helper-builder-react-jsx/src/index.js - About 30 mins to fix

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

            function convertJSXIdentifier(node, parent) {
    if (t.isJSXIdentifier(node)) {
      if (node.name === "this" && t.isReferenced(node, parent)) {
        return t.thisExpression();
      } else if (t.isValidIdentifier(node.name, false)) {
          Severity: Major
          Found in packages/babel-helper-builder-react-jsx/src/index.js and 1 other location - About 1 day to fix
          packages/babel-helper-builder-react-jsx-experimental/src/index.js on lines 466..489

          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 221.

          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 (t.isJSXNamespacedName(node.name)) {
      node.name = t.stringLiteral(
        node.name.namespace.name + ":" + node.name.name.name,
      );
    } else if (t.isValidIdentifier(node.name.name, false)) {
          Severity: Major
          Found in packages/babel-helper-builder-react-jsx/src/index.js and 1 other location - About 5 hrs to fix
          packages/babel-helper-builder-react-jsx-experimental/src/index.js on lines 515..523

          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 141.

          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

              if (t.isIdentifier(tagExpr)) {
      tagName = tagExpr.name;
    } else if (t.isLiteral(tagExpr)) {
      tagName = tagExpr.value;
    }
          Severity: Major
          Found in packages/babel-helper-builder-react-jsx/src/index.js and 2 other locations - About 55 mins to fix
          packages/babel-helper-builder-react-jsx-experimental/src/index.js on lines 542..546
          packages/babel-helper-builder-react-jsx-experimental/src/index.js on lines 766..770

          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 53.

          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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