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sjsyrek/maryamyriameliamurphies.js

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source/list/indexing.js

Summary

Maintainability
C
1 day
Test Coverage

Function index has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.
Open

export const index = (as, n) => {
  const index_ = (as, n) => {
    if (isList(as) === false ) { return error.listError(as, index); }
    if (n < 0) { return error.rangeError(n, index); }
    if (isEmpty(as)) { return error.rangeError(n, index); }
Severity: Minor
Found in source/list/indexing.js - About 55 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

Avoid too many return statements within this function.
Open

    return index(xs)(n - 1);
Severity: Major
Found in source/list/indexing.js - About 30 mins to fix

    Similar blocks of code found in 3 locations. Consider refactoring.
    Open

    export const find = (p, xs) => {
  const find_ = (p, xs) => isList(xs) ? $(listToMaybe)(filter(p))(xs) : error.listError(xs, find);
  return partial(find_, p, xs);
}
    Severity: Major
    Found in source/list/indexing.js and 2 other locations - About 2 hrs to fix
    source/foldable.js on lines 74..77
    source/list/indexing.js on lines 138..142

    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 77.

    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 3 locations. Consider refactoring.
    Open

    export const findIndex = (p, xs) => {
  const findIndex_ = (p, xs) =>
    isList(xs) ? $(listToMaybe)(findIndices(p))(xs) : error.listError(xs, findIndex);
  return partial(findIndex_, p, xs);
}
    Severity: Major
    Found in source/list/indexing.js and 2 other locations - About 2 hrs to fix
    source/foldable.js on lines 74..77
    source/list/indexing.js on lines 118..121

    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 77.

    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

    export const elemIndex = (n, xs) => {
  const elemIndex_ = (n, xs) =>
    isList(xs) ? findIndex(isEq(n), xs) : error.listError(xs, elemIndex);
  return partial(elemIndex_, n, xs);
}
    Severity: Major
    Found in source/list/indexing.js and 1 other location - About 1 hr to fix
    source/list/indexing.js on lines 96..100

    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 70.

    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

    export const elemIndices = (n, xs) => {
  const elemIndices_ = (n, xs) =>
    isList(xs) ? findIndices(isEq(n), xs) : error.listError(xs, elemIndices);
  return partial(elemIndices_, n, xs);
}
    Severity: Major
    Found in source/list/indexing.js and 1 other location - About 1 hr to fix
    source/list/indexing.js on lines 78..82

    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 70.

    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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