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

export const useNewDisputeContext = () => {
  const context = useContext(NewDisputeContext);
  if (!context) {
    throw new Error("Context Provider not found.");
  }
Severity: Minor
Found in web/src/context/NewDisputeContext.tsx and 1 other location - About 30 mins to fix
web/src/context/GraphqlBatcher.tsx on lines 51..57

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 45.

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

        () => ({
          wasDrawn,
          hasVoted,
          isLoading,
          isHiddenVotes,
Severity: Minor
Found in web/src/hooks/useVotingContext.tsx and 1 other location - About 30 mins to fix
web/src/context/NewDisputeContext.tsx on lines 99..108

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 45.

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

const CasesFetcher: React.FC = () => {
  const { page, order, filter } = useParams();
  const location = useRootPath();
  const navigate = useNavigate();
  const isDesktop = useIsDesktop();
Severity: Minor
Found in web/src/pages/Cases/CasesFetcher.tsx - 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 replacePlaceholdersWithValues has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

export const replacePlaceholdersWithValues = (mapping: any, context: Record<string, unknown>) => {
  const replace = (obj) => {
    if (typeof obj === "string") {
      return mustache.render(obj, context);
    } else if (Array.isArray(obj)) {
Severity: Minor
Found in kleros-sdk/src/dataMappings/utils/replacePlaceholdersWithValues.ts - 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 deployArbitration has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

const deployArbitration: DeployFunction = async (hre: HardhatRuntimeEnvironment) => {
  const { ethers, deployments, getNamedAccounts, getChainId } = hre;
  const { AddressZero } = hre.ethers.constants;
  const RNG_LOOKAHEAD = 20;
Severity: Minor
Found in contracts/deploy/00-home-chain-arbitration.ts - 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 fetchIpfsJsonAction has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

export const fetchIpfsJsonAction = async (mapping: FetchIpfsJsonMapping) => {
  const { ipfsUri, seek, populate } = mapping;

  let httpUri;
  if (ipfsUri.startsWith("/ipfs/")) {
Severity: Minor
Found in kleros-sdk/src/dataMappings/actions/fetchIpfsJsonAction.ts - 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 VotesAccordion has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

const VotesAccordion: React.FC<IVotesAccordion> = ({ drawnJurors, period, answers, isActiveRound, hiddenVotes }) => {
  const accordionItems = useMemo(() => {
    return drawnJurors
      .map((drawnJuror) =>
        !isUndefined(drawnJuror.vote?.justification?.choice)
Severity: Minor
Found in web/src/pages/Cases/CaseDetails/Voting/VotesDetails/index.tsx - 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 ensureClassicContributionFromEvent has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

export function ensureClassicContributionFromEvent<T>(event: T): ClassicContribution | null {
  if (!(event instanceof ContributionEvent) && !(event instanceof Withdrawal)) return null;
  const coreDisputeID = event.params._coreDisputeID.toString();
  const coreRoundIndex = event.params._coreRoundID.toString();
  const roundID = `${DISPUTEKIT_ID}-${coreDisputeID}-${coreRoundIndex}`;
Severity: Minor
Found in subgraph/core/src/entities/ClassicContribution.ts - 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 deployArbitration has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

const deployArbitration: DeployFunction = async (hre: HardhatRuntimeEnvironment) => {
  const { ethers, deployments, getNamedAccounts, getChainId } = hre;
  const { deploy, execute } = deployments;
  const { AddressZero } = hre.ethers.constants;
  const RNG_LOOKAHEAD = 20;
Severity: Minor
Found in contracts/deploy/00-home-chain-arbitration-neo.ts - 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 DrawButton has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

const DrawButton: React.FC<IDrawButton> = ({ id, numberOfVotes, setIsOpen, period }) => {
  const [isSending, setIsSending] = useState(false);
  const publicClient = usePublicClient();
  const { data: maintenanceData } = useDisputeMaintenanceQuery(id);
  const { data: phase } = useSortitionModulePhase();
Severity: Minor
Found in web/src/pages/Cases/CaseDetails/MaintenanceButtons/DrawButton.tsx - 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 getActivityDelta has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

function getActivityDelta(previousStake: BigInt, newStake: BigInt): BigInt {
  if (previousStake.gt(ZERO)) {
    return newStake.gt(ZERO) ? ZERO : BigInt.fromI32(-1);
  } else {
    return newStake.gt(ZERO) ? ONE : ZERO;
Severity: Minor
Found in subgraph/core/src/entities/JurorTokensPerCourt.ts - 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 Popup has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

const Popup: React.FC<PopupProps & IPopup> = ({
  title,
  icon: Icon,
  popupType,
  setIsOpen,
Severity: Minor
Found in web/src/components/Popup/index.tsx - 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 getNewValue has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

function getNewValue(currentVar: string, targetVar: string, delta: BigInt, counter: Entity | null): Value {
  if (currentVar === targetVar) {
    return !counter ? Value.fromBigInt(delta) : Value.fromBigInt(counter.get(currentVar)!.toBigInt().plus(delta));
  } else {
    return !counter ? Value.fromBigInt(ZERO) : counter.get(currentVar)!;
Severity: Minor
Found in subgraph/core/src/datapoint.ts - 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

Forbidden 'var' keyword, use 'let' or 'const' instead
Open

  var info = await core.getRoundInfo(disputeID, 0);
Severity: Minor
Found in contracts/scripts/console-init.ts by tslint

Rule: no-var-keyword

Disallows usage of the var keyword.

Use let or const instead.

Rationale

Declaring variables using var has several edge case behaviors that make var unsuitable for modern code. Variables declared by var have their parent function block as their scope, ignoring other control flow statements. vars have declaration "hoisting" (similar to functions) and can appear to be used before declaration.

Variables declared by const and let instead have as their scope the block in which they are defined, and are not allowed to used before declaration or be re-declared with another const or let.

Notes
  • Has Fix

Config

Not configurable.

Examples
"no-var-keyword": true

For more information see this page.

Forbidden 'var' keyword, use 'let' or 'const' instead
Open

  var tx;
Severity: Minor
Found in contracts/scripts/console-init.ts by tslint

Rule: no-var-keyword

Disallows usage of the var keyword.

Use let or const instead.

Rationale

Declaring variables using var has several edge case behaviors that make var unsuitable for modern code. Variables declared by var have their parent function block as their scope, ignoring other control flow statements. vars have declaration "hoisting" (similar to functions) and can appear to be used before declaration.

Variables declared by const and let instead have as their scope the block in which they are defined, and are not allowed to used before declaration or be re-declared with another const or let.

Notes
  • Has Fix

Config

Not configurable.

Examples
"no-var-keyword": true

For more information see this page.

Identifier 'filter' is never reassigned; use 'const' instead of 'var'.
Open

    var filter = sender.filters.MessageReceived();
Severity: Minor
Found in contracts/scripts/console-init.ts by tslint

Rule: prefer-const

Requires that variable declarations use const instead of let and var if possible.

If a variable is only assigned to once when it is declared, it should be declared using 'const'

Notes
  • Has Fix

Config

An optional object containing the property "destructuring" with two possible values:

  • "any" (default) - If any variable in destructuring can be const, this rule warns for those variables.
  • "all" - Only warns if all variables in destructuring can be const.
Examples
"prefer-const": true
"prefer-const": true,[object Object]
Schema
{
  "type": "object",
  "properties": {
    "destructuring": {
      "type": "string",
      "enum": [
        "all",
        "any"
      ]
    }
  }
}

For more information see this page.

Shadowed name: 'dispute'
Open

  logger.info(`Disputes not yet executed: ${unexecutedDisputes.map((dispute) => dispute.id)}`);
Severity: Minor
Found in contracts/scripts/keeperBot.ts by tslint

Rule: no-shadowed-variable

Disallows shadowing variable declarations.

Rationale

When a variable in a local scope and a variable in the containing scope have the same name, shadowing occurs. Shadowing makes it impossible to access the variable in the containing scope and obscures to what value an identifier actually refers. Compare the following snippets:

const a = 'no shadow';
function print() {
    console.log(a);
}
print(); // logs 'no shadow'.
const a = 'no shadow';
function print() {
    const a = 'shadow'; // TSLint will complain here.
    console.log(a);
}
print(); // logs 'shadow'.

ESLint has an equivalent rule. For more background information, refer to this MDN closure doc.

Config

You can optionally pass an object to disable checking for certain kinds of declarations. Possible keys are "class", "enum", "function", "import", "interface", "namespace", "typeAlias" and "typeParameter". You can also pass "underscore" to ignore variable names that begin with _. Just set the value to false for the check you want to disable. All checks default to true, i.e. are enabled by default. Note that you cannot disable variables and parameters.

The option "temporalDeadZone" defaults to true which shows errors when shadowing block scoped declarations in their temporal dead zone. When set to false parameters, classes, enums and variables declared with let or const are not considered shadowed if the shadowing occurs within their temporal dead zone.

The following example shows how the "temporalDeadZone" option changes the linting result:

function fn(value) {
    if (value) {
        const tmp = value; // no error on this line if "temporalDeadZone" is false
        return tmp;
    }
    let tmp = undefined;
    if (!value) {
        const tmp = value; // this line always contains an error
        return tmp;
    }
}
Examples
"no-shadowed-variable": true
"no-shadowed-variable": true,[object Object]
Schema
{
  "type": "object",
  "properties": {
    "class": {
      "type": "boolean"
    },
    "enum": {
      "type": "boolean"
    },
    "function": {
      "type": "boolean"
    },
    "import": {
      "type": "boolean"
    },
    "interface": {
      "type": "boolean"
    },
    "namespace": {
      "type": "boolean"
    },
    "typeAlias": {
      "type": "boolean"
    },
    "typeParameter": {
      "type": "boolean"
    },
    "temporalDeadZone": {
      "type": "boolean"
    },
    "underscore": {
      "type": "boolean"
    }
  }
}

For more information see this page.

Identifier 'success' is never reassigned; use 'const' instead of 'let'.
Open

  let success = false;
Severity: Minor
Found in contracts/scripts/keeperBot.ts by tslint

Rule: prefer-const

Requires that variable declarations use const instead of let and var if possible.

If a variable is only assigned to once when it is declared, it should be declared using 'const'

Notes
  • Has Fix

Config

An optional object containing the property "destructuring" with two possible values:

  • "any" (default) - If any variable in destructuring can be const, this rule warns for those variables.
  • "all" - Only warns if all variables in destructuring can be const.
Examples
"prefer-const": true
"prefer-const": true,[object Object]
Schema
{
  "type": "object",
  "properties": {
    "destructuring": {
      "type": "string",
      "enum": [
        "all",
        "any"
      ]
    }
  }
}

For more information see this page.

Unnecessary 'await'.
Open

    return await ethers.provider.getBlock("latest").then((block) => {
Severity: Minor
Found in contracts/scripts/keeperBot.ts by tslint

Rule: no-return-await

Disallows unnecessary return await.

Rationale

An async function always wraps the return value in a Promise. Using return await just adds extra time before the overreaching promise is resolved without changing the semantics.

Notes
  • Has Fix

Config

Not configurable.

Examples
"no-return-await": true

For more information see this page.

Unnecessary 'await'.
Open

    return await sortition.lastPhaseChange().then((lastPhaseChange) => {
Severity: Minor
Found in contracts/scripts/keeperBot.ts by tslint

Rule: no-return-await

Disallows unnecessary return await.

Rationale

An async function always wraps the return value in a Promise. Using return await just adds extra time before the overreaching promise is resolved without changing the semantics.

Notes
  • Has Fix

Config

Not configurable.

Examples
"no-return-await": true

For more information see this page.

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