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archanpatkar/Vachan

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src/vachan.js

Summary

Maintainability
C
7 hrs
Test Coverage

File vachan.js has 421 lines of code (exceeds 250 allowed). Consider refactoring.
Wontfix

/*
Library Object
*/
const vachan = {}
Severity: Minor
Found in src/vachan.js - About 6 hrs to fix

    P has 41 functions (exceeds 20 allowed). Consider refactoring.
    Wontfix

    class P {
  /*
        Creating a preresolved Promise
    */
  static resolve (v) {
    Severity: Minor
    Found in src/vachan.js - About 5 hrs to fix

      Function recurHandler has a Cognitive Complexity of 14 (exceeds 5 allowed). Consider refactoring.
      Wontfix

      const recurHandler = (value, context) => {
  if (value === null) context.resolve(value)
  else if (value === context.cp) context.reject(new TypeError('It cannot return the same Promise'))
  else if (
    value instanceof Object ||
      Severity: Minor
      Found in src/vachan.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 then has a Cognitive Complexity of 13 (exceeds 5 allowed). Consider refactoring.
      Wontfix

        then (s, f) {
    if (typeof (s) !== 'function') s = undefined
    if (typeof (f) !== 'function') f = undefined
    const parasite = new P()
    const context = {
      Severity: Minor
      Found in src/vachan.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 recurHandler has 30 lines of code (exceeds 25 allowed). Consider refactoring.
      Wontfix

      const recurHandler = (value, context) => {
  if (value === null) context.resolve(value)
  else if (value === context.cp) context.reject(new TypeError('It cannot return the same Promise'))
  else if (
    value instanceof Object ||
      Severity: Minor
      Found in src/vachan.js - About 1 hr to fix

        Function constructor has 26 lines of code (exceeds 25 allowed). Consider refactoring.
        Wontfix

          constructor (executorFunc, scheduler = vachan.default_type) {
    this[state] = vachan.Pending
    this.setScheduler(scheduler)
    this[value] = undefined
    this[successHandler] = []
        Severity: Minor
        Found in src/vachan.js - About 1 hr to fix

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

              if (this[state] === vachan.Fulfilled) {
      if (s) this[queueTask](() => handler(s, context)(this[value]))
      else this[queueTask](() => parasite[resolve](this[value]))
      vachan.realm.raiseEvent(vachan.realm.events.Preresolved, { substrate: this, parasite: parasite, handler: s })
    } else if (this[state] === vachan.Rejected) {
          Severity: Major
          Found in src/vachan.js and 1 other location - About 3 hrs to fix
          src/vachan.js on lines 454..464

          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 106.

          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

              } else if (this[state] === vachan.Rejected) {
      if (f) this[queueTask](() => handler(f, context)(this[value]))
      else this[queueTask](() => parasite[reject](this[value]))
      vachan.realm.raiseEvent(vachan.realm.events.Prerejected, { substrate: this, parasite: parasite, handler: f })
    } else {
          Severity: Major
          Found in src/vachan.js and 1 other location - About 3 hrs to fix
          src/vachan.js on lines 450..464

          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 106.

          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.
          Wontfix

              y instanceof InternalSemigroup ? o.concat(...(y.vals)) : y !== nothing ? o.concat(y) : i = x
          Severity: Minor
          Found in src/vachan.js and 1 other location - About 40 mins to fix
          src/vachan.js on lines 671..671

          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 49.

          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.
          Wontfix

              x instanceof InternalSemigroup ? o.concat(...(x.vals)) : x !== nothing ? o.concat(x) : i = y
          Severity: Minor
          Found in src/vachan.js and 1 other location - About 40 mins to fix
          src/vachan.js on lines 672..672

          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 49.

          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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