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adam-26/react-chunk

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src/index.js

Summary

Maintainability
F
3 days
Test Coverage

Function createChunkComponent has 247 lines of code (exceeds 25 allowed). Consider refactoring.
Open

function createChunkComponent(loadFn, options) {
  let opts = Object.assign({
    displayName: null,
    loader: null,
    hoistStatics: false,
Severity: Major
Found in src/index.js - About 1 day to fix

    File index.js has 435 lines of code (exceeds 250 allowed). Consider refactoring.
    Open

    'use strict';
const React = require('react');
const PropTypes = require('prop-types');
const hoistNonReactStatics = require('hoist-non-react-statics');
const getDisplayName = require('react-display-name').default;
    Severity: Minor
    Found in src/index.js - About 6 hrs to fix

      Function render has 40 lines of code (exceeds 25 allowed). Consider refactoring.
      Open

            render() {
        // eslint-disable-next-line no-unused-vars
        const { chunks, ...passThroughProps } = this.props;
        const importState = {
          isLoading: this.state.loading,
      Severity: Minor
      Found in src/index.js - About 1 hr to fix

        Function init has 39 lines of code (exceeds 25 allowed). Consider refactoring.
        Open

            function init(throwOnImportError) {
      if (!res) {
        res = loadFn(opts.loader, {
          retryBackOff: Array.isArray(opts.retryBackOff) ? opts.retryBackOff : [],
          importTimeoutMs: importTimeoutMs,
        Severity: Minor
        Found in src/index.js - About 1 hr to fix

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

                _loadChunks() {
        if (!res.loading) {
          return;
        }
          Severity: Minor
          Found in src/index.js - About 1 hr to fix

            Function loadMap has 33 lines of code (exceeds 25 allowed). Consider refactoring.
            Open

            function loadMap(obj, options) {
  let state = {
    loading: false,
    loaded: {},
    error: null
            Severity: Minor
            Found in src/index.js - About 1 hr to fix

              Function retryLoader has 32 lines of code (exceeds 25 allowed). Consider refactoring.
              Open

              function retryLoader(resolve, reject, fn, retryOpts) {
  if (retryOpts.hasResolved) {
    return;
  }
              Severity: Minor
              Found in src/index.js - About 1 hr to fix

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

                function retryLoader(resolve, reject, fn, retryOpts) {
  if (retryOpts.hasResolved) {
    return;
  }
                Severity: Minor
                Found in src/index.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

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

                              if (hoistSubscribers.length !== 0) {
                const subscriberHandlers = hoistSubscribers.splice(0, hoistSubscribers.length);
                subscriberHandlers.forEach(subscribeHandler => {
                  subscribeHandler(opts.resolveDefaultImport(res.loaded));
                });
                Severity: Major
                Found in src/index.js and 1 other location - About 1 hr to fix
                src/index.js on lines 444..449

                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 60.

                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

                          if (importedSubscribers.length !== 0) {
            const subscriberHandlers = importedSubscribers.splice(0, importedSubscribers.length);
            subscriberHandlers.forEach(subscribeHandler => {
              subscribeHandler(opts.resolveDefaultImport(res.loaded));
            });
                Severity: Major
                Found in src/index.js and 1 other location - About 1 hr to fix
                src/index.js on lines 433..438

                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 60.

                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

                          } else {
            this._delay = setTimeout(() => {
              this.setState({ pastDelay: true });
            }, opts.delay);
          }
                Severity: Minor
                Found in src/index.js and 1 other location - About 30 mins to fix
                src/index.js on lines 258..262

                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

                        if (typeof opts.timeout === 'number') {
          this._timeout = setTimeout(() => {
            this.setState({ timedOut: true });
          }, opts.timeout);
        }
                Severity: Minor
                Found in src/index.js and 1 other location - About 30 mins to fix
                src/index.js on lines 248..252

                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

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