wikimedia/mediawiki-core

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resources/lib/oojs/oojs.js

Summary

Maintainability
D
2 days
Test Coverage

File oojs.js has 693 lines of code (exceeds 250 allowed). Consider refactoring.
Open

/*!
 * OOjs v7.0.1
 * https://www.mediawiki.org/wiki/OOjs
 *
 * Copyright 2011-2023 OOjs Team and other contributors.
Severity: Major
Found in resources/lib/oojs/oojs.js - About 1 day to fix

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

        OO.EventEmitter.prototype.emitThrow = function ( event ) {
            // We tolerate code duplication with #emit, because the
            // alternative is an extra level of indirection which will
            // appear in very many stack traces.
            if ( !hasOwn.call( this.bindings, event ) ) {
    Severity: Minor
    Found in resources/lib/oojs/oojs.js - About 1 hr to fix

      Function aggregate has 29 lines of code (exceeds 25 allowed). Consider refactoring.
      Open

          OO.EmitterList.prototype.aggregate = function ( events ) {
              var i, item;
              for ( var itemEvent in events ) {
                  var groupEvent = events[ itemEvent ];
      
      
      Severity: Minor
      Found in resources/lib/oojs/oojs.js - About 1 hr to fix

        Function emit has 28 lines of code (exceeds 25 allowed). Consider refactoring.
        Open

            OO.EventEmitter.prototype.emit = function ( event ) {
                if ( !hasOwn.call( this.bindings, event ) ) {
                    return false;
                }
        
        
        Severity: Minor
        Found in resources/lib/oojs/oojs.js - About 1 hr to fix

          Function compare has 26 lines of code (exceeds 25 allowed). Consider refactoring.
          Open

          OO.compare = function ( a, b, asymmetrical ) {
              if ( a === b ) {
                  return true;
              }
          
          
          Severity: Minor
          Found in resources/lib/oojs/oojs.js - About 1 hr to fix

            Consider simplifying this complex logical expression.
            Open

                    if ( aType !== bType ||
                        (
                            ( aType === 'string' || aType === 'number' || aType === 'boolean' ) &&
                            aValue !== bValue
                        ) ||
            Severity: Major
            Found in resources/lib/oojs/oojs.js - About 1 hr to fix

              Avoid too many return statements within this function.
              Open

                  return destination;
              Severity: Major
              Found in resources/lib/oojs/oojs.js - About 30 mins to fix

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

                            if ( typeof binding.method === 'string' ) {
                                // Lookup method by name (late binding)
                                method = binding.context[ binding.method ];
                            } else {
                                method = binding.method;
                Severity: Minor
                Found in resources/lib/oojs/oojs.js and 1 other location - About 55 mins to fix
                resources/lib/oojs/oojs.js on lines 908..913

                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 ( typeof binding.method === 'string' ) {
                                // Lookup method by name (late binding)
                                method = binding.context[ binding.method ];
                            } else {
                                method = binding.method;
                Severity: Minor
                Found in resources/lib/oojs/oojs.js and 1 other location - About 55 mins to fix
                resources/lib/oojs/oojs.js on lines 847..852

                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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