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aureooms/js-codec-base64

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Function _encode has a Cognitive Complexity of 75 (exceeds 5 allowed). Consider refactoring.
Open

export default function* _encode(string, options = DEFAULT_OPTIONS) {
    if (options.variant) {
        if (Object.hasOwn(variants, options.variant)) {
            options = variants[options.variant];
        } else {
Severity: Minor
Found in src/_encode.js - About 1 day 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 _decode has a Cognitive Complexity of 39 (exceeds 5 allowed). Consider refactoring.
Open

export default function* _decode(bytes, options = DEFAULT_OPTIONS) {
    if (options.variant) {
        if (Object.hasOwn(variants, options.variant)) {
            options = variants[options.variant];
        } else {
Severity: Minor
Found in src/_decode.js - About 5 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 _encode has 136 lines of code (exceeds 25 allowed). Consider refactoring.
Open

export default function* _encode(string, options = DEFAULT_OPTIONS) {
    if (options.variant) {
        if (Object.hasOwn(variants, options.variant)) {
            options = variants[options.variant];
        } else {
Severity: Major
Found in src/_encode.js - About 5 hrs to fix

    Function _decode has 70 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

    export default function* _decode(bytes, options = DEFAULT_OPTIONS) {
    if (options.variant) {
        if (Object.hasOwn(variants, options.variant)) {
            options = variants[options.variant];
        } else {
    Severity: Major
    Found in src/_decode.js - About 2 hrs to fix

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

          if (options.variant) {
        if (Object.hasOwn(variants, options.variant)) {
            options = variants[options.variant];
        } else {
            throw new ValueError(`unknown Base64 variant ${options.variant}`);
      Severity: Major
      Found in src/_encode.js and 1 other location - About 1 hr to fix
      src/_decode.js on lines 13..19

      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

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

          if (options.variant) {
        if (Object.hasOwn(variants, options.variant)) {
            options = variants[options.variant];
        } else {
            throw new ValueError(`unknown Base64 variant ${options.variant}`);
      Severity: Major
      Found in src/_decode.js and 1 other location - About 1 hr to fix
      src/_encode.js on lines 17..23

      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 3 locations. Consider refactoring.
      Open

                      if (!Object.hasOwn(index, d)) {
                    const reason = `not in alphabet ${d}`;
                    const position = {start: start + 3, end: start + 4};
                    throw new Base64EncodeError(reason, string, position);
                }
      Severity: Major
      Found in src/_encode.js and 2 other locations - About 1 hr to fix
      src/_encode.js on lines 118..122
      src/_encode.js on lines 125..129

      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 69.

      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

              if (!Object.hasOwn(index, b)) {
            const reason = `not in alphabet ${b}`;
            const position = {start: start + 1, end: start + 2};
            throw new Base64EncodeError(reason, string, position);
        }
      Severity: Major
      Found in src/_encode.js and 2 other locations - About 1 hr to fix
      src/_encode.js on lines 125..129
      src/_encode.js on lines 132..136

      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 69.

      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

                  if (!Object.hasOwn(index, c)) {
                const reason = `not in alphabet ${c}`;
                const position = {start: start + 2, end: start + 3};
                throw new Base64EncodeError(reason, string, position);
            }
      Severity: Major
      Found in src/_encode.js and 2 other locations - About 1 hr to fix
      src/_encode.js on lines 118..122
      src/_encode.js on lines 132..136

      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 69.

      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

              if (c < 0x00 || c > 0xff) {
            const reason = `byte out of range 0x00 <= ${c} <= 0xFF`;
            const position = {start, end: start + 1};
            throw new Base64DecodeError(reason, bytes, position);
        }
      Severity: Major
      Found in src/_decode.js and 2 other locations - About 1 hr to fix
      src/_decode.js on lines 42..46
      src/_decode.js on lines 66..70

      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 66.

      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

              if (a < 0x00 || a > 0xff) {
            const reason = `byte out of range 0x00 <= ${a} <= 0xFF`;
            const position = {start, end: start + 1};
            throw new Base64DecodeError(reason, bytes, position);
        }
      Severity: Major
      Found in src/_decode.js and 2 other locations - About 1 hr to fix
      src/_decode.js on lines 66..70
      src/_decode.js on lines 89..93

      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 66.

      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

              if (b < 0x00 || b > 0xff) {
            const reason = `byte out of range 0x00 <= ${b} <= 0xFF`;
            const position = {start, end: start + 1};
            throw new Base64DecodeError(reason, bytes, position);
        }
      Severity: Major
      Found in src/_decode.js and 2 other locations - About 1 hr to fix
      src/_decode.js on lines 42..46
      src/_decode.js on lines 89..93

      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 66.

      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 char4tobyte3 has 5 arguments (exceeds 4 allowed). Consider refactoring.
      Open

      export default function* char4tobyte3(index, a, b, c, d) {
      Severity: Minor
      Found in src/char4tobyte3.js - About 35 mins to fix
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