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packages/babel-plugin-transform-modules-systemjs/src/index.js

Summary

Maintainability
F
3 days
Test Coverage

Function exit has 300 lines of code (exceeds 25 allowed). Consider refactoring.
Open

        exit(path, state) {
          const undefinedIdent = path.scope.buildUndefinedNode();
          const exportIdent = path.scope.generateUid("export");
          const contextIdent = state.contextIdent;
Severity: Major
Found in packages/babel-plugin-transform-modules-systemjs/src/index.js - About 1 day to fix

    File index.js has 506 lines of code (exceeds 250 allowed). Consider refactoring.
    Open

    import { declare } from "@babel/helper-plugin-utils";
import hoistVariables from "@babel/helper-hoist-variables";
import { template, types as t } from "@babel/core";
import { getImportSource } from "babel-plugin-dynamic-import-node/utils";
import { rewriteThis, getModuleName } from "@babel/helper-module-transforms";
    Severity: Major
    Found in packages/babel-plugin-transform-modules-systemjs/src/index.js - About 1 day to fix

      Function constructExportCall has 61 lines of code (exceeds 25 allowed). Consider refactoring.
      Open

      function constructExportCall(
  path,
  exportIdent,
  exportNames,
  exportValues,
      Severity: Major
      Found in packages/babel-plugin-transform-modules-systemjs/src/index.js - About 2 hrs to fix

        Function AssignmentExpression|UpdateExpression has 41 lines of code (exceeds 25 allowed). Consider refactoring.
        Open

            "AssignmentExpression|UpdateExpression"(path) {
      if (path.node[IGNORE_REASSIGNMENT_SYMBOL]) return;
      path.node[IGNORE_REASSIGNMENT_SYMBOL] = true;

      const arg = path.get(path.isAssignmentExpression() ? "left" : "argument");
        Severity: Minor
        Found in packages/babel-plugin-transform-modules-systemjs/src/index.js - About 1 hr to fix

          Avoid deeply nested control flow statements.
          Open

                        if (declar.node) {
                path.replaceWith(declar);

                if (path.isFunction()) {
                  const node = declar.node;
          Severity: Major
          Found in packages/babel-plugin-transform-modules-systemjs/src/index.js - About 45 mins to fix

            Avoid deeply nested control flow statements.
            Open

                          } else if (declar.isFunctionDeclaration()) {
                if (id) {
                  beforeBody.push(declar.node);
                  exportNames.push("default");
                  exportValues.push(t.cloneNode(id));
            Severity: Major
            Found in packages/babel-plugin-transform-modules-systemjs/src/index.js - About 45 mins to fix

              Avoid deeply nested control flow statements.
              Open

                              if (id) {
                  exportNames.push("default");
                  exportValues.push(undefinedIdent);
                  variableIds.push(id);
                  addExportName(id.name, "default");
              Severity: Major
              Found in packages/babel-plugin-transform-modules-systemjs/src/index.js - About 45 mins to fix

                Function constructExportCall has 5 arguments (exceeds 4 allowed). Consider refactoring.
                Open

                  path,
  exportIdent,
  exportNames,
  exportValues,
  exportStarTarget,
                Severity: Minor
                Found in packages/babel-plugin-transform-modules-systemjs/src/index.js - About 35 mins to fix

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

                  function constructExportCall(
  path,
  exportIdent,
  exportNames,
  exportValues,
                  Severity: Minor
                  Found in packages/babel-plugin-transform-modules-systemjs/src/index.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

                        if (this.scope.getBinding(name) !== path.scope.getBinding(name)) return;
                  Severity: Major
                  Found in packages/babel-plugin-transform-modules-systemjs/src/index.js - About 30 mins to fix

                    Avoid too many return statements within this function.
                    Open

                          if (!arg.isIdentifier()) return;
                    Severity: Major
                    Found in packages/babel-plugin-transform-modules-systemjs/src/index.js - About 30 mins to fix

                      Avoid too many return statements within this function.
                      Open

                            if (!exportedNames) return;
                      Severity: Major
                      Found in packages/babel-plugin-transform-modules-systemjs/src/index.js - About 30 mins to fix

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

                                      path.replaceWith(
                t.expressionStatement(
                  t.assignmentExpression(
                    "=",
                    t.cloneNode(path.node.id),
                        Severity: Major
                        Found in packages/babel-plugin-transform-modules-systemjs/src/index.js and 1 other location - About 1 hr to fix
                        packages/babel-plugin-transform-modules-systemjs/src/index.js on lines 365..373

                        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 57.

                        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

                                          path.replaceWith(
                    t.expressionStatement(
                      t.assignmentExpression(
                        "=",
                        t.cloneNode(declar.node.id),
                        Severity: Major
                        Found in packages/babel-plugin-transform-modules-systemjs/src/index.js and 1 other location - About 1 hr to fix
                        packages/babel-plugin-transform-modules-systemjs/src/index.js on lines 289..297

                        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 57.

                        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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