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lib/events.js

Summary

Maintainability
D
2 days
Test Coverage

Function emit has a Cognitive Complexity of 24 (exceeds 5 allowed). Consider refactoring.
Open

EventEmitter.prototype.emit = function emit(type) {
  var er, handler, len, args, i, listeners;

  if (!this._events)
    this._events = {};
Severity: Minor
Found in lib/events.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 removeListener has a Cognitive Complexity of 22 (exceeds 5 allowed). Consider refactoring.
Open

    function removeListener(type, listener) {
  var list, position, length, i;

  if (!util.isFunction(listener))
    throw TypeError('listener must be a function');
Severity: Minor
Found in lib/events.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 removeAllListeners has a Cognitive Complexity of 17 (exceeds 5 allowed). Consider refactoring.
Open

    function removeAllListeners(type) {
  var key, listeners;

  if (!this._events)
    return this;
Severity: Minor
Found in lib/events.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 emit has 55 lines of code (exceeds 25 allowed). Consider refactoring.
Open

EventEmitter.prototype.emit = function emit(type) {
  var er, handler, len, args, i, listeners;

  if (!this._events)
    this._events = {};
Severity: Major
Found in lib/events.js - About 2 hrs to fix

    Function addListener has a Cognitive Complexity of 13 (exceeds 5 allowed). Consider refactoring.
    Open

    EventEmitter.prototype.addListener = function addListener(type, listener) {
  var m;

  if (!util.isFunction(listener))
    throw TypeError('listener must be a function');
    Severity: Minor
    Found in lib/events.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 removeListener has 33 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

        function removeListener(type, listener) {
  var list, position, length, i;

  if (!util.isFunction(listener))
    throw TypeError('listener must be a function');
    Severity: Minor
    Found in lib/events.js - About 1 hr to fix

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

      EventEmitter.prototype.addListener = function addListener(type, listener) {
  var m;

  if (!util.isFunction(listener))
    throw TypeError('listener must be a function');
      Severity: Minor
      Found in lib/events.js - About 1 hr to fix

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

            function removeAllListeners(type) {
  var key, listeners;

  if (!this._events)
    return this;
        Severity: Minor
        Found in lib/events.js - About 1 hr to fix

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

          EventEmitter.init = function() {
  this.domain = null;
  if (EventEmitter.usingDomains) {
    // if there is an active domain, then attach to it.
    domain = domain || require('domain');
          Severity: Minor
          Found in lib/events.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

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