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Function mergeSortBy has a Cognitive Complexity of 41 (exceeds 5 allowed). Consider refactoring.
Open

export const mergeSortBy = (cmp, as) => {
  const mergeSortBy_ = (cmp, as) => {
    if (isList(as) === false) { return error.listError(as, mergeSortBy); }
    const sequences = as => {
      if (isEmpty(as)) { return list(as); }
Severity: Minor
Found in source/list/ordering.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 mergeSortBy has 53 lines of code (exceeds 25 allowed). Consider refactoring.
Open

export const mergeSortBy = (cmp, as) => {
  const mergeSortBy_ = (cmp, as) => {
    if (isList(as) === false) { return error.listError(as, mergeSortBy); }
    const sequences = as => {
      if (isEmpty(as)) { return list(as); }
Severity: Major
Found in source/list/ordering.js - About 2 hrs 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 3 locations. Consider refactoring.
    Open

    export const foldMap = (f, a) => {
  const foldMap_ = (f, a) => Monoid(a) ? $(mconcat)(fmap(f))(a) : error.typeError(a, foldMap);
  return partial(foldMap_, f, a);
 }
    Severity: Major
    Found in source/foldable.js and 2 other locations - About 2 hrs to fix
    source/list/indexing.js on lines 118..121
    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 2 locations. Consider refactoring.
    Open

    export const splitAt = (n, xs) => {
  const splitAt_ = (n, xs) =>
    isList(xs) ? tuple(take(n, xs), drop(n, xs)) : error.listError(xs, splitAt);
  return partial(splitAt_, n, xs);
}
    Severity: Major
    Found in source/list/sub.js and 1 other location - About 2 hrs to fix
    source/list/sub.js on lines 172..176

    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 76.

    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 span = (p, xs) => {
  const span_ = (p, xs) =>
    isList(xs) ? tuple(takeWhile(p, xs), dropWhile(p, xs)) : error.listError(xs, span);
  return partial(span_, p, xs);
}
    Severity: Major
    Found in source/list/sub.js and 1 other location - About 2 hrs to fix
    source/list/sub.js on lines 100..104

    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 76.

    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

    Function mergeSortBy_ has 50 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

      const mergeSortBy_ = (cmp, as) => {
    if (isList(as) === false) { return error.listError(as, mergeSortBy); }
    const sequences = as => {
      if (isEmpty(as)) { return list(as); }
      let xs = tail(as);
    Severity: Minor
    Found in source/list/ordering.js - About 2 hrs to fix

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

      export const flatMap = (m, f) => {
  const flatMap_ = (m, f) => Monad(m) ? dataType(m).flatMap(m, f) : error.typeError(m, flatMap);
  return partial(flatMap_, m, f);
}
      Severity: Major
      Found in source/monad.js and 3 other locations - About 1 hr to fix
      source/functor.js on lines 50..53
      source/monad.js on lines 127..130
      source/traversable.js on lines 77..80

      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 74.

      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

      export const mapM = (f, m) => {
  const mapM_ = (f, m) => Monad(m) ? dataType(m).traverse(f, m) : error.typeError(m, mapM);
  return partial(mapM_, f, m);
}
      Severity: Major
      Found in source/traversable.js and 3 other locations - About 1 hr to fix
      source/functor.js on lines 50..53
      source/monad.js on lines 62..65
      source/monad.js on lines 127..130

      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 74.

      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

      export const liftM = (f, m) => {
  const liftM_ = (f, m) => Monad(m) ? dataType(m).fmap(f, m) : error.typeError(m, liftM);
  return partial(liftM_, f, m)
}
      Severity: Major
      Found in source/monad.js and 3 other locations - About 1 hr to fix
      source/functor.js on lines 50..53
      source/monad.js on lines 62..65
      source/traversable.js on lines 77..80

      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 74.

      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

      export const fmap = (f, a) => {
  const fmap_ = (f, a) => Functor(a) ? dataType(a).fmap(f, a) : error.typeError(a, fmap);
  return partial(fmap_, f, a);
}
      Severity: Major
      Found in source/functor.js and 3 other locations - About 1 hr to fix
      source/monad.js on lines 62..65
      source/monad.js on lines 127..130
      source/traversable.js on lines 77..80

      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 74.

      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

      Function compare has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.
      Open

      export const compare = (a, b) => {
  const compare_ = (a, b) => {
    if (a === Infinity) { return GT; }
    if (b === Infinity) { return LT; }
    if (typeCheck(a, b)) {
      Severity: Minor
      Found in source/ord.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 listRangeLazyBy has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.
      Open

      export const listRangeLazyBy = (start, end, step) => {
  const listRangeLazyBy_ = (start, end, step) => {
    if (start === end) { return list(start); }
    if (greaterThan(start, end)) { return emptyList; }
    let x = start;
      Severity: Minor
      Found in source/list/func.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

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

      export const inject = (m, a) => {
  const inject_ = (m, a) => Monad(m) ? dataType(m).pure(a) : error.typeError(m, inject);
  return partial(inject_, m, a);
}
      Severity: Major
      Found in source/monad.js and 1 other location - About 1 hr to fix
      source/applicative.js on lines 49..52

      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 73.

      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 pure = (f, a) => {
  const pure_ = (f, a) => Applicative(f) ? dataType(f).pure(a) : error.typeError(f, pure);
  return partial(pure_, f, a);
}
      Severity: Major
      Found in source/applicative.js and 1 other location - About 1 hr to fix
      source/monad.js on lines 44..47

      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 73.

      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 head = xs => {
  if (isList(xs)) { return isEmpty(xs) ? error.emptyList(xs, head) : xs.head(); }
  return error.listError(xs, head);
}
      Severity: Major
      Found in source/list/func.js and 1 other location - About 1 hr to fix
      source/list/func.js on lines 250..253

      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 72.

      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 tail = xs => {
  if (isList(xs)) { return isEmpty(xs) ? error.emptyList(xs, tail) : xs.tail(); }
  return error.listError(xs, tail);
}
      Severity: Major
      Found in source/list/func.js and 1 other location - About 1 hr to fix
      source/list/func.js on lines 217..220

      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 72.

      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

      Severity
      Category
      Status
      Source
      Language