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lts/lib/wasi.js

Summary

Maintainability
C
1 day
Test Coverage

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

  constructor(options = {}) {
    validateObject(options, 'options');

    if (options.args !== undefined)
      validateArray(options.args, 'options.args');
Severity: Minor
Found in lts/lib/wasi.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 constructor has 38 lines of code (exceeds 25 allowed). Consider refactoring.
Open

  constructor(options = {}) {
    validateObject(options, 'options');

    if (options.args !== undefined)
      validateArray(options.args, 'options.args');
Severity: Minor
Found in lts/lib/wasi.js - About 1 hr to fix

    Function start has 32 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

      start(instance) {
    validateObject(instance, 'instance');

    const exports = instance.exports;
    Severity: Minor
    Found in lts/lib/wasi.js - About 1 hr to fix

      Function start has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
      Open

        start(instance) {
    validateObject(instance, 'instance');

    const exports = instance.exports;
      Severity: Minor
      Found in lts/lib/wasi.js - About 35 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

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

          if (options.env !== undefined) {
      validateObject(options.env, 'options.env');
      for (const [key, value] of ObjectEntries(options.env)) {
        if (value !== undefined)
          ArrayPrototypePush(env, `${key}=${value}`);
      Severity: Major
      Found in lts/lib/wasi.js and 1 other location - About 2 hrs to fix
      current/lib/wasi.js on lines 62..68

      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 80.

      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

          if (options.preopens !== undefined) {
      validateObject(options.preopens, 'options.preopens');
      for (const [key, value] of ObjectEntries(options.preopens)) {
        ArrayPrototypePush(preopens, String(key), String(value));
      }
      Severity: Major
      Found in lts/lib/wasi.js and 1 other location - About 1 hr to fix
      current/lib/wasi.js on lines 71..76

      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 68.

      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

          if (options.returnOnExit !== undefined) {
      validateBoolean(options.returnOnExit, 'options.returnOnExit');
      if (options.returnOnExit)
        wrap.proc_exit = FunctionPrototypeBind(wasiReturnOnProcExit, this);
    }
      Severity: Minor
      Found in lts/lib/wasi.js and 1 other location - About 50 mins to fix
      current/lib/wasi.js on lines 90..94

      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 51.

      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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