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

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define('underscore', factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, (function () {
    var current = global._;
Severity: Major
Found in underscore.js and 1 other location - About 3 mos to fix
underscore-umd.js on lines 1..2046

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 15401.

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

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define('underscore', factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, (function () {
    var current = global._;
Severity: Major
Found in underscore-umd.js and 1 other location - About 3 mos to fix
underscore.js on lines 1..2046

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 15401.

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

File underscore.js has 1445 lines of code (exceeds 250 allowed). Consider refactoring.
Open

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define('underscore', factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, (function () {
    var current = global._;
Severity: Major
Found in underscore.js - About 3 days to fix

    File underscore-umd.js has 1445 lines of code (exceeds 250 allowed). Consider refactoring.
    Open

    (function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define('underscore', factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, (function () {
    var current = global._;
    Severity: Major
    Found in underscore-umd.js - About 3 days to fix

      File underscore-esm.js has 1436 lines of code (exceeds 250 allowed). Consider refactoring.
      Open

      //     Underscore.js 1.13.7
//     https://underscorejs.org
//     (c) 2009-2024 Jeremy Ashkenas, Julian Gonggrijp, and DocumentCloud and Investigative Reporters & Editors
//     Underscore may be freely distributed under the MIT license.
      Severity: Major
      Found in underscore-esm.js - About 3 days to fix

        Function deepEq has a Cognitive Complexity of 45 (exceeds 5 allowed). Consider refactoring.
        Open

        function deepEq(a, b, aStack, bStack) {
  // Unwrap any wrapped objects.
  if (a instanceof _$1) a = a._wrapped;
  if (b instanceof _$1) b = b._wrapped;
  // Compare `[[Class]]` names.
        Severity: Minor
        Found in underscore-esm.js - About 6 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 deepEq has a Cognitive Complexity of 45 (exceeds 5 allowed). Consider refactoring.
        Open

        function deepEq(a, b, aStack, bStack) {
  // Unwrap any wrapped objects.
  if (a instanceof _) a = a._wrapped;
  if (b instanceof _) b = b._wrapped;
  // Compare `[[Class]]` names.
        Severity: Minor
        Found in modules/isEqual.js - About 6 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 deepEq has 66 lines of code (exceeds 25 allowed). Consider refactoring.
        Open

          function deepEq(a, b, aStack, bStack) {
    // Unwrap any wrapped objects.
    if (a instanceof _$1) a = a._wrapped;
    if (b instanceof _$1) b = b._wrapped;
    // Compare `[[Class]]` names.
        Severity: Major
        Found in underscore.js - About 2 hrs to fix

          Function deepEq has 66 lines of code (exceeds 25 allowed). Consider refactoring.
          Open

          function deepEq(a, b, aStack, bStack) {
  // Unwrap any wrapped objects.
  if (a instanceof _) a = a._wrapped;
  if (b instanceof _) b = b._wrapped;
  // Compare `[[Class]]` names.
          Severity: Major
          Found in modules/isEqual.js - About 2 hrs to fix

            Function deepEq has 66 lines of code (exceeds 25 allowed). Consider refactoring.
            Open

            function deepEq(a, b, aStack, bStack) {
  // Unwrap any wrapped objects.
  if (a instanceof _$1) a = a._wrapped;
  if (b instanceof _$1) b = b._wrapped;
  // Compare `[[Class]]` names.
            Severity: Major
            Found in underscore-esm.js - About 2 hrs to fix

              Function deepEq has 66 lines of code (exceeds 25 allowed). Consider refactoring.
              Open

                function deepEq(a, b, aStack, bStack) {
    // Unwrap any wrapped objects.
    if (a instanceof _$1) a = a._wrapped;
    if (b instanceof _$1) b = b._wrapped;
    // Compare `[[Class]]` names.
              Severity: Major
              Found in underscore-umd.js - About 2 hrs to fix

                Function throttle has a Cognitive Complexity of 19 (exceeds 5 allowed). Consider refactoring.
                Open

                export default function throttle(func, wait, options) {
  var timeout, context, args, result;
  var previous = 0;
  if (!options) options = {};
                Severity: Minor
                Found in modules/throttle.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 flatten has a Cognitive Complexity of 18 (exceeds 5 allowed). Consider refactoring.
                Open

                export default function flatten(input, depth, strict, output) {
  output = output || [];
  if (!depth && depth !== 0) {
    depth = Infinity;
  } else if (depth <= 0) {
                Severity: Minor
                Found in modules/_flatten.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 throttle has a Cognitive Complexity of 18 (exceeds 5 allowed). Consider refactoring.
                Open

                function throttle(func, wait, options) {
  var timeout, context, args, result;
  var previous = 0;
  if (!options) options = {};
                Severity: Minor
                Found in underscore-esm.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 uniq has a Cognitive Complexity of 17 (exceeds 5 allowed). Consider refactoring.
                Open

                function uniq(array, isSorted, iteratee, context) {
  if (!isBoolean(isSorted)) {
    context = iteratee;
    iteratee = isSorted;
    isSorted = false;
                Severity: Minor
                Found in underscore-esm.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 uniq has a Cognitive Complexity of 17 (exceeds 5 allowed). Consider refactoring.
                Open

                export default function uniq(array, isSorted, iteratee, context) {
  if (!isBoolean(isSorted)) {
    context = iteratee;
    iteratee = isSorted;
    isSorted = false;
                Severity: Minor
                Found in modules/uniq.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 flatten$1 has a Cognitive Complexity of 17 (exceeds 5 allowed). Consider refactoring.
                Open

                function flatten$1(input, depth, strict, output) {
  output = output || [];
  if (!depth && depth !== 0) {
    depth = Infinity;
  } else if (depth <= 0) {
                Severity: Minor
                Found in underscore-esm.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 createReduce has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.
                Open

                function createReduce(dir) {
  // Wrap code that reassigns argument variables in a separate function than
  // the one that accesses `arguments.length` to avoid a perf hit. (#1991)
  var reducer = function(obj, iteratee, memo, initial) {
    var _keys = !isArrayLike(obj) && keys(obj),
                Severity: Minor
                Found in underscore-esm.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 createReduce has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.
                Open

                export default function createReduce(dir) {
  // Wrap code that reassigns argument variables in a separate function than
  // the one that accesses `arguments.length` to avoid a perf hit. (#1991)
  var reducer = function(obj, iteratee, memo, initial) {
    var _keys = !isArrayLike(obj) && keys(obj),
                Severity: Minor
                Found in modules/_createReduce.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 template has 46 lines of code (exceeds 25 allowed). Consider refactoring.
                Open

                export default function template(text, settings, oldSettings) {
  if (!settings && oldSettings) settings = oldSettings;
  settings = defaults({}, settings, _.templateSettings);

  // Combine delimiters into one regular expression via alternation.
                Severity: Minor
                Found in modules/template.js - About 1 hr to fix
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