fission-suite/webnative

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src/linking/producer.ts

Summary

Maintainability
F
3 days
Test Coverage

Function createProducer has a Cognitive Complexity of 48 (exceeds 5 allowed). Consider refactoring.
Open

export const createProducer = async (
  dependencies: Dependencies,
  options: { username: string }
): Promise<AccountLinkingProducer> => {
  const { username } = options
Severity: Minor
Found in src/linking/producer.ts - About 7 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 createProducer has 93 lines of code (exceeds 25 allowed). Consider refactoring.
Open

export const createProducer = async (
  dependencies: Dependencies,
  options: { username: string }
): Promise<AccountLinkingProducer> => {
  const { username } = options
Severity: Major
Found in src/linking/producer.ts - About 3 hrs to fix

    Function handleMessage has 59 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

      const handleMessage = async (event: MessageEvent): Promise<void> => {
        const { data } = event
        const message = data.arrayBuffer ? new TextDecoder().decode(await data.arrayBuffer()) : data
    
        switch (ls.step) {
    Severity: Major
    Found in src/linking/producer.ts - About 2 hrs to fix

      Function handleUserChallenge has 31 lines of code (exceeds 25 allowed). Consider refactoring.
      Open

      export const handleUserChallenge = async (
        crypto: Crypto.Implementation,
        sessionKey: CryptoKey,
        data: string
      ): Promise<Result<{ pin: number[]; audience: string }, Error>> => {
      Severity: Minor
      Found in src/linking/producer.ts - About 1 hr to fix

        Function challengeOnce has 30 lines of code (exceeds 25 allowed). Consider refactoring.
        Open

                    const challengeOnce = () => {
                      let called = false
        
                      return {
                        confirmPin: async () => {
        Severity: Minor
        Found in src/linking/producer.ts - About 1 hr to fix

          Function generateSessionKey has 28 lines of code (exceeds 25 allowed). Consider refactoring.
          Open

          export const generateSessionKey = async (
            crypto: Crypto.Implementation,
            didThrowaway: string
          ): Promise<{ sessionKey: CryptoKey; sessionKeyMessage: string }> => {
            const sessionKey = await crypto.aes.genKey(Crypto.SymmAlg.AES_GCM)
          Severity: Minor
          Found in src/linking/producer.ts - About 1 hr to fix

            Function handleUserChallenge has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.
            Open

            export const handleUserChallenge = async (
              crypto: Crypto.Implementation,
              sessionKey: CryptoKey,
              data: string
            ): Promise<Result<{ pin: number[]; audience: string }, Error>> => {
            Severity: Minor
            Found in src/linking/producer.ts - 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

            Avoid deeply nested control flow statements.
            Open

                                if (ls.sessionKey) {
                                  await declineDelegation(dependencies.crypto, ls.sessionKey, finishDelegation)
                                } else {
                                  handleLinkingError(new LinkingError("Producer missing session key when declining account delegation"))
                                }
            Severity: Major
            Found in src/linking/producer.ts - About 45 mins to fix

              Avoid deeply nested control flow statements.
              Open

                                  if (ls.sessionKey) {
                                    await delegateAccount(
                                      dependencies.auth,
                                      dependencies.crypto,
                                      ls.sessionKey,
              Severity: Major
              Found in src/linking/producer.ts - About 45 mins to fix

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

                  const typeGuard = (message: unknown): message is { iv: string; msg: string } => {
                    return Check.isObject(message)
                      && "iv" in message && typeof message.iv === "string"
                      && "msg" in message && typeof message.msg === "string"
                  }
                Severity: Major
                Found in src/linking/producer.ts and 1 other location - About 3 hrs to fix
                src/linking/consumer.ts on lines 315..319

                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 97.

                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

                    try {
                      message = await crypto.aes.decrypt(
                        Uint8arrays.fromString(msg, "base64pad"),
                        sessionKey,
                        Crypto.SymmAlg.AES_GCM,
                Severity: Major
                Found in src/linking/producer.ts and 2 other locations - About 1 hr to fix
                src/linking/consumer.ts on lines 221..230
                src/linking/consumer.ts on lines 328..337

                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 type AccountLinkingProducer = {
                  on: <K extends keyof ProducerEventMap>(eventName: K, listener: EventListener<ProducerEventMap[ K ]>) => void
                  cancel: () => void
                }
                Severity: Major
                Found in src/linking/producer.ts and 1 other location - About 1 hr to fix
                src/linking/consumer.ts on lines 19..22

                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

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

                export type Dependencies = {
                  auth: Auth.Implementation<Components>
                  crypto: Crypto.Implementation
                  manners: Manners.Implementation
                }
                Severity: Minor
                Found in src/linking/producer.ts and 1 other location - About 55 mins to fix
                src/linking/consumer.ts on lines 30..34

                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 54.

                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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