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Function Train has a Cognitive Complexity of 145 (exceeds 5 allowed). Consider refactoring.
Open

exports.Train = ( function () {
    var emptyFn = function () {}
        , Bolgia = require( 'bolgia' )
        , improve = Bolgia.improve
        , clone = Bolgia.clone
Severity: Minor
Found in lib/train.js - About 2 days 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 Train has 360 lines of code (exceeds 25 allowed). Consider refactoring.
Open

exports.Train = ( function () {
    var emptyFn = function () {}
        , Bolgia = require( 'bolgia' )
        , improve = Bolgia.improve
        , clone = Bolgia.clone
Severity: Major
Found in lib/train.js - About 1 day to fix

    Similar blocks of code found in 4 locations. Consider refactoring.
    Open

    var log = console.log
     , print = function ( ms, n ) {
        var avg = 1000 * n / ms;
        log( '- total elements evicted: %d.', n );
        log( '- elapsed: %d secs.', ( ms / 1000 ).toFixed( 4 ) );
    Severity: Major
    Found in bench/multiple-shift-evict-2^23-items-bench.js and 3 other locations - About 5 hrs to fix
    bench/multiple-shift-evict-2^24-items-bench.js on lines 3..18
    bench/single-pop-evict-2^23-items-bench.js on lines 3..18
    bench/single-pop-evict-2^24-items-bench.js on lines 3..18

    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 138.

    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 4 locations. Consider refactoring.
    Open

    var log = console.log
     , print = function ( ms, n ) {
        var avg = 1000 * n / ms;
        log( '- total elements: %d.', n );
        log( '- elapsed: %d secs.', ( ms / 1000 ).toFixed( 4 ) );
    Severity: Major
    Found in bench/multiple-shift-evict-2^24-items-bench.js and 3 other locations - About 5 hrs to fix
    bench/multiple-shift-evict-2^23-items-bench.js on lines 3..18
    bench/single-pop-evict-2^23-items-bench.js on lines 3..18
    bench/single-pop-evict-2^24-items-bench.js on lines 3..18

    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 138.

    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 4 locations. Consider refactoring.
    Open

    var log = console.log
     , print = function ( ms, n ) {
        var avg = 1000 * n / ms;
        log( '- total elements evicted: %d.', n );
        log( '- elapsed: %d secs.', ( ms / 1000 ).toFixed( 4 ) );
    Severity: Major
    Found in bench/single-pop-evict-2^23-items-bench.js and 3 other locations - About 5 hrs to fix
    bench/multiple-shift-evict-2^23-items-bench.js on lines 3..18
    bench/multiple-shift-evict-2^24-items-bench.js on lines 3..18
    bench/single-pop-evict-2^24-items-bench.js on lines 3..18

    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 138.

    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 4 locations. Consider refactoring.
    Open

    var log = console.log
     , print = function ( ms, n ) {
        var avg = 1000 * n / ms;
        log( '- total elements: %d.', n );
        log( '- elapsed: %d secs.', ( ms / 1000 ).toFixed( 4 ) );
    Severity: Major
    Found in bench/single-pop-evict-2^24-items-bench.js and 3 other locations - About 5 hrs to fix
    bench/multiple-shift-evict-2^23-items-bench.js on lines 3..18
    bench/multiple-shift-evict-2^24-items-bench.js on lines 3..18
    bench/single-pop-evict-2^23-items-bench.js on lines 3..18

    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 138.

    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 5 locations. Consider refactoring.
    Open

    var log = console.log
     , print = function ( ms, n ) {
        var avg = 1000 * n / ms;
        log( '- total elements: %d.', n );
        log( '- elapsed: %d secs.', ( ms / 1000 ).toFixed( 4 ) );
    Severity: Major
    Found in bench/shift-2^16-items-bench.js and 4 other locations - About 4 hrs to fix
    bench/push-train-2^24-items-bench.js on lines 3..17
    bench/push-train-fast-2^24-items-bench.js on lines 3..17
    bench/push-train-faster-2^24-items-bench.js on lines 3..17
    bench/shift-2^17-items-bench.js on lines 3..17

    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 132.

    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 5 locations. Consider refactoring.
    Open

    var log = console.log
    , print = function ( ms, n ) {
        var avg = 1000 * n / ms;
        log( '- total elements: %d.', n );
        log( '- elapsed: %d secs.', ( ms / 1000 ).toFixed( 4 ) );
    Severity: Major
    Found in bench/push-train-faster-2^24-items-bench.js and 4 other locations - About 4 hrs to fix
    bench/push-train-2^24-items-bench.js on lines 3..17
    bench/push-train-fast-2^24-items-bench.js on lines 3..17
    bench/shift-2^16-items-bench.js on lines 3..17
    bench/shift-2^17-items-bench.js on lines 3..17

    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 132.

    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 5 locations. Consider refactoring.
    Open

    var log = console.log
     , print = function ( ms, n ) {
        var avg = 1000 * n / ms;
        log( '- total elements: %d.', n );
        log( '- elapsed: %d secs.', ( ms / 1000 ).toFixed( 4 ) );
    Severity: Major
    Found in bench/shift-2^17-items-bench.js and 4 other locations - About 4 hrs to fix
    bench/push-train-2^24-items-bench.js on lines 3..17
    bench/push-train-fast-2^24-items-bench.js on lines 3..17
    bench/push-train-faster-2^24-items-bench.js on lines 3..17
    bench/shift-2^16-items-bench.js on lines 3..17

    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 132.

    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 5 locations. Consider refactoring.
    Open

    var log = console.log
    , print = function ( ms, n ) {
        var avg = 1000 * n / ms;
        log( '- total elements: %d.', n );
        log( '- elapsed: %d secs.', ( ms / 1000 ).toFixed( 4 ) );
    Severity: Major
    Found in bench/push-train-fast-2^24-items-bench.js and 4 other locations - About 4 hrs to fix
    bench/push-train-2^24-items-bench.js on lines 3..17
    bench/push-train-faster-2^24-items-bench.js on lines 3..17
    bench/shift-2^16-items-bench.js on lines 3..17
    bench/shift-2^17-items-bench.js on lines 3..17

    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 132.

    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 5 locations. Consider refactoring.
    Open

    var log = console.log
    , print = function ( ms, n ) {
        var avg = 1000 * n / ms;
        log( '- total elements: %d.', n );
        log( '- elapsed: %d secs.', ( ms / 1000 ).toFixed( 4 ) );
    Severity: Major
    Found in bench/push-train-2^24-items-bench.js and 4 other locations - About 4 hrs to fix
    bench/push-train-fast-2^24-items-bench.js on lines 3..17
    bench/push-train-faster-2^24-items-bench.js on lines 3..17
    bench/shift-2^16-items-bench.js on lines 3..17
    bench/shift-2^17-items-bench.js on lines 3..17

    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 132.

    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

    var log = console.log
     , print = function ( ms, n ) {
        var avg = 1000 * n / ms;
        log( '- total elements: %d.', n );
        log( '- elapsed: %d secs.', ms / 1000 );
    Severity: Major
    Found in bench/single-pop-evict-side-case.js and 1 other location - About 4 hrs to fix
    bench/multiple-shift-evict-side-case.js on lines 3..18

    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 130.

    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

    var log = console.log
     , print = function ( ms, n ) {
        var avg = 1000 * n / ms;
        log( '- total elements: %d.', n );
        log( '- elapsed: %d secs.', ms / 1000 );
    Severity: Major
    Found in bench/multiple-shift-evict-side-case.js and 1 other location - About 4 hrs to fix
    bench/single-pop-evict-side-case.js on lines 3..18

    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 130.

    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

    var log = console.log
     , print = function ( ms, n ) {
        var avg = 1000 * n / ms;
        log( '- total elements: %d.', n );
        log( '- elapsed: %d secs.', ( ms / 1000 ).toFixed( 4 ) );
    Severity: Major
    Found in bench/shift-array-2^16-items-bench.js and 1 other location - About 4 hrs to fix
    bench/push-array-2^24-items-bench.js on lines 3..16

    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 130.

    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

    var log = console.log
    , print = function ( ms, n ) {
        var avg = 1000 * n / ms;
        log( '- total elements: %d.', n );
        log( '- elapsed: %d secs.', ( ms / 1000 ).toFixed( 4 ) );
    Severity: Major
    Found in bench/push-array-2^24-items-bench.js and 1 other location - About 4 hrs to fix
    bench/shift-array-2^16-items-bench.js on lines 3..16

    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 130.

    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 train.js has 362 lines of code (exceeds 250 allowed). Consider refactoring.
    Open

    /*
 * Train, a fast (FIFO) queue with rollback mechanism.
 * Behind the scenes, it uses 2 arrays, to simulate and perform 
 * fast shifting and popping operations, without using the Array
 * #shift() method.
    Severity: Minor
    Found in lib/train.js - About 4 hrs to fix

      Function shift has 41 lines of code (exceeds 25 allowed). Consider refactoring.
      Open

          tproto.shift = function () {
        var me = this
            , qhead = me.qhead
            , qroll = me.qroll
            , rlim = me.rlim
      Severity: Minor
      Found in lib/train.js - About 1 hr to fix

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

            tproto.pop = function ( k ) {
        var me = this
            , l = k ? min( k, me.size() ) : 0
            , qhead = me.qhead
            , qtail = me.qtail
        Severity: Minor
        Found in lib/train.js - About 1 hr to fix

          Function slice has 35 lines of code (exceeds 25 allowed). Consider refactoring.
          Open

              tproto.slice = function ( begin, end ) {
        var me = this
            , qtail = me.qtail
            , qhead = me.qhead
            , size = me.size()
          Severity: Minor
          Found in lib/train.js - About 1 hr to fix

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

                tproto.iterate = function ( fn, scope, cback, evict ) {
        var me = this
            , cnt = 0
            , env = scope || me
            , size = me.size()
            Severity: Minor
            Found in lib/train.js - About 1 hr to fix
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