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lts/lib/internal/per_context/primordials.js

Summary

Maintainability
F
3 days
Test Coverage

Function copyPropsRenamedBound has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

function copyPropsRenamedBound(src, dest, prefix) {
  for (const key of Reflect.ownKeys(src)) {
    if (typeof key === 'string') {
      const desc = Reflect.getOwnPropertyDescriptor(src, key);
      if (typeof desc.value === 'function') {
Severity: Minor
Found in lts/lib/internal/per_context/primordials.js - About 25 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

Function copyPrototype has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

function copyPrototype(src, dest, prefix) {
  for (const key of Reflect.ownKeys(src)) {
    if (typeof key === 'string') {
      const desc = Reflect.getOwnPropertyDescriptor(src, key);
      if (typeof desc.value === 'function') {
Severity: Minor
Found in lts/lib/internal/per_context/primordials.js - About 25 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

function copyPropsRenamedBound(src, dest, prefix) {
  for (const key of Reflect.ownKeys(src)) {
    if (typeof key === 'string') {
      const desc = Reflect.getOwnPropertyDescriptor(src, key);
      if (typeof desc.value === 'function') {
Severity: Major
Found in lts/lib/internal/per_context/primordials.js and 1 other location - About 5 hrs to fix
current/lib/internal/per_context/primordials.js on lines 50..64

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 150.

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

function copyPrototype(src, dest, prefix) {
  for (const key of Reflect.ownKeys(src)) {
    if (typeof key === 'string') {
      const desc = Reflect.getOwnPropertyDescriptor(src, key);
      if (typeof desc.value === 'function') {
Severity: Major
Found in lts/lib/internal/per_context/primordials.js and 1 other location - About 5 hrs to fix
current/lib/internal/per_context/primordials.js on lines 66..79

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 146.

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

[
  'Array',
  'ArrayBuffer',
  'BigInt',
  'BigInt64Array',
Severity: Major
Found in lts/lib/internal/per_context/primordials.js and 1 other location - About 3 hrs to fix
current/lib/internal/per_context/primordials.js on lines 119..152

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 104.

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

function copyPropsRenamed(src, dest, prefix) {
  for (const key of Reflect.ownKeys(src)) {
    if (typeof key === 'string') {
      Reflect.defineProperty(
        dest,
Severity: Major
Found in lts/lib/internal/per_context/primordials.js and 1 other location - About 3 hrs to fix
current/lib/internal/per_context/primordials.js on lines 39..48

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 103.

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

function makeSafe(unsafe, safe) {
  copyProps(unsafe.prototype, safe.prototype);
  copyProps(unsafe, safe);
  Object.setPrototypeOf(safe.prototype, null);
  Object.freeze(safe.prototype);
Severity: Major
Found in lts/lib/internal/per_context/primordials.js and 1 other location - About 2 hrs to fix
current/lib/internal/per_context/primordials.js on lines 81..88

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 82.

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

[
  'Promise',
].forEach((name) => {
  const original = global[name];
  primordials[name] = original;
Severity: Major
Found in lts/lib/internal/per_context/primordials.js and 1 other location - About 2 hrs to fix
current/lib/internal/per_context/primordials.js on lines 157..164

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

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

function copyProps(src, dest) {
  for (const key of Reflect.ownKeys(src)) {
    if (!Reflect.getOwnPropertyDescriptor(dest, key)) {
      Reflect.defineProperty(
        dest,
Severity: Major
Found in lts/lib/internal/per_context/primordials.js and 1 other location - About 1 hr to fix
current/lib/internal/per_context/primordials.js on lines 28..37

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 71.

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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