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packages/babel-compiler/babel-compiler.js

Summary

Maintainability
F
4 days
Test Coverage

Function _inferHelper has a Cognitive Complexity of 48 (exceeds 5 allowed). Consider refactoring.
Open

BCp._inferHelper = function (inputFile, cacheEntry) {
  if (! cacheEntry.controlFileData) {
    return false;
  }
Severity: Minor
Found in packages/babel-compiler/babel-compiler.js - About 7 hrs 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

File babel-compiler.js has 394 lines of code (exceeds 250 allowed). Consider refactoring.
Open

var semver = Npm.require("semver");
var JSON5 = Npm.require("json5");
/**
 * A compiler that can be instantiated with features and used inside
 * Plugin.registerCompiler
Severity: Minor
Found in packages/babel-compiler/babel-compiler.js - About 5 hrs to fix

    Function _inferHelper has 109 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

    BCp._inferHelper = function (inputFile, cacheEntry) {
  if (! cacheEntry.controlFileData) {
    return false;
  }
    Severity: Major
    Found in packages/babel-compiler/babel-compiler.js - About 4 hrs to fix

      Function processOneFileForTarget has 83 lines of code (exceeds 25 allowed). Consider refactoring.
      Open

      BCp.processOneFileForTarget = function (inputFile, source) {
  this._babelrcCache = this._babelrcCache || Object.create(null);

  if (typeof source !== "string") {
    // Other compiler plugins can call processOneFileForTarget with a
      Severity: Major
      Found in packages/babel-compiler/babel-compiler.js - About 3 hrs to fix

        Function processOneFileForTarget has a Cognitive Complexity of 23 (exceeds 5 allowed). Consider refactoring.
        Open

        BCp.processOneFileForTarget = function (inputFile, source) {
  this._babelrcCache = this._babelrcCache || Object.create(null);

  if (typeof source !== "string") {
    // Other compiler plugins can call processOneFileForTarget with a
        Severity: Minor
        Found in packages/babel-compiler/babel-compiler.js - About 3 hrs 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 requireWithPrefixes has a Cognitive Complexity of 21 (exceeds 5 allowed). Consider refactoring.
        Open

        function requireWithPrefixes(inputFile, id, prefixes, controlFilePath) {
  var isTopLevel = "./".indexOf(id.charAt(0)) < 0;
  var presetOrPlugin;
  var presetOrPluginMeta;
        Severity: Minor
        Found in packages/babel-compiler/babel-compiler.js - About 2 hrs 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 requireWithPrefixes has 51 lines of code (exceeds 25 allowed). Consider refactoring.
        Open

        function requireWithPrefixes(inputFile, id, prefixes, controlFilePath) {
  var isTopLevel = "./".indexOf(id.charAt(0)) < 0;
  var presetOrPlugin;
  var presetOrPluginMeta;
        Severity: Major
        Found in packages/babel-compiler/babel-compiler.js - About 2 hrs to fix

          Function _inferFromBabelRc has a Cognitive Complexity of 12 (exceeds 5 allowed). Consider refactoring.
          Open

          BCp._inferFromBabelRc = function (inputFile, babelOptions, cacheDeps) {
  var babelrcPath = inputFile.findControlFile(".babelrc");
  if (babelrcPath) {
    if (! hasOwn.call(this._babelrcCache, babelrcPath)) {
      try {
          Severity: Minor
          Found in packages/babel-compiler/babel-compiler.js - About 1 hr 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 requireWithPath has 29 lines of code (exceeds 25 allowed). Consider refactoring.
          Open

            function requireWithPath(id, path) {
    const prefixes = [];
    const lastInPath = path[path.length - 1];
    if (lastInPath === "presets") {
      prefixes.push("@babel/preset-", "babel-preset-");
          Severity: Minor
          Found in packages/babel-compiler/babel-compiler.js - About 1 hr to fix

            Function inferTypeScriptConfig has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
            Open

            BCp.inferTypeScriptConfig = function (features, inputFile, cacheDeps) {
  if (features.typescript && inputFile.findControlFile) {
    const tsconfigPath = inputFile.findControlFile("tsconfig.json");
    if (tsconfigPath) {
      if (typeof features.typescript !== "object") {
            Severity: Minor
            Found in packages/babel-compiler/babel-compiler.js - About 35 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

            Avoid too many return statements within this function.
            Open

                return null;
            Severity: Major
            Found in packages/babel-compiler/babel-compiler.js - About 30 mins to fix

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

                  if (this._inferHelper(inputFile, cacheEntry)) {
      merge(babelOptions, cacheEntry, "presets");
      merge(babelOptions, cacheEntry, "plugins");
      Object.assign(cacheDeps, cacheEntry.deps);
      return true;
              Severity: Minor
              Found in packages/babel-compiler/babel-compiler.js and 1 other location - About 55 mins to fix
              packages/babel-compiler/babel-compiler.js on lines 294..299

              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

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

                  if (this._inferHelper(inputFile, cacheEntry)) {
      merge(babelOptions, cacheEntry, "presets");
      merge(babelOptions, cacheEntry, "plugins");
      Object.assign(cacheDeps, cacheEntry.deps);
      return true;
              Severity: Minor
              Found in packages/babel-compiler/babel-compiler.js and 1 other location - About 55 mins to fix
              packages/babel-compiler/babel-compiler.js on lines 272..277

              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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