kleros/kleros-v2

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Expected a 'for-of' loop instead of a 'for' loop with this simple iteration
Open

  for (let i = 0; i < voteIDs.length; i++) {

Rule: prefer-for-of

Recommends a 'for-of' loop over a standard 'for' loop if the index is only used to access the array being iterated.

Rationale

A for(... of ...) loop is easier to implement and read when the index is not needed.

Config

Not configurable.

Examples
"prefer-for-of": true

For more information see this page.

comment must start with a space
Open

  //since we need to track only the latest delay amount now, subtract the previous amount and add the new amount

Rule: comment-format

Enforces formatting rules for single-line comments.

Rationale

Helps maintain a consistent, readable style in your codebase.

Notes
  • Has Fix

Config

Four arguments may be optionally provided:

  • "check-space" requires that all single-line comments must begin with a space, as in // comment
    • note that for comments starting with multiple slashes, e.g. ///, leading slashes are ignored
    • TypeScript reference comments are ignored completely
  • "check-lowercase" requires that the first non-whitespace character of a comment must be lowercase, if applicable.
  • "check-uppercase" requires that the first non-whitespace character of a comment must be uppercase, if applicable.
  • "allow-trailing-lowercase" allows that only the first comment of a series of comments needs to be uppercase.
    • requires "check-uppercase"
    • comments must start at the same position

Exceptions to "check-lowercase" or "check-uppercase" can be managed with object that may be passed as last argument.

One of two options can be provided in this object:

  • "ignore-words" - array of strings - words that will be ignored at the beginning of the comment.
  • "ignore-pattern" - string - RegExp pattern that will be ignored at the beginning of the comment.
Examples
"comment-format": true,check-space,check-uppercase,allow-trailing-lowercase
"comment-format": true,check-lowercase,[object Object]
"comment-format": true,check-lowercase,[object Object]
Schema
{
  "type": "array",
  "items": {
    "anyOf": [
      {
        "type": "string",
        "enum": [
          "check-space",
          "check-lowercase",
          "check-uppercase",
          "allow-trailing-lowercase"
        ]
      },
      {
        "type": "object",
        "properties": {
          "ignore-words": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "ignore-pattern": {
            "type": "string"
          }
        },
        "minProperties": 1,
        "maxProperties": 1
      }
    ]
  },
  "minLength": 1,
  "maxLength": 5
}

For more information see this page.

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

  let stakeLockedEvent = newMockEvent();

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.

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

      var filter = gateway.filters.DisputeCreation();

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.

Shadowed name: 'dispute'
Open

  let disputesWithoutJurors = await filterAsync(disputes, async (dispute) => {
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.

Shadowed name: 'dispute'
Open

  logger.info(`Disputes not fully executed: ${unprocessedDisputesInExecution.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.

!= should be !==
Open

    } while (numberOfMissingRepartitions != 0);
Severity: Minor
Found in contracts/scripts/keeperBot.ts by tslint

Rule: triple-equals

Requires === and !== in place of == and !=.

Config

Two arguments may be optionally provided:

  • "allow-null-check" allows == and != when comparing to null.
  • "allow-undefined-check" allows == and != when comparing to undefined.
Examples
"triple-equals": true
"triple-equals": true,allow-null-check
"triple-equals": true,allow-undefined-check
Schema
{
  "type": "array",
  "items": {
    "type": "string",
    "enum": [
      "allow-null-check",
      "allow-undefined-check"
    ]
  },
  "minLength": 0,
  "maxLength": 2
}

For more information see this page.

Unnecessary 'await'.
Open

        wrapWithToast(async () => await changeToManualMode(manualModeConfig.request), publicClient).finally(() =>

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.

Shadowed name: 'arbitrable'
Open

      !isClient ? [] : knownArbitrables.map((arbitrable) => ({ text: shortenAddress(arbitrable), value: arbitrable })),

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.

unused expression, expected an assignment or function call
Open

export const getDisputeRequestParamsFromTxn = async (hash: `0x${string}`, chainId: number) => {

Rule: no-unused-expression

Disallows unused expression statements.

Unused expressions are expression statements which are not assignments or function calls (and thus usually no-ops).

Rationale

Detects potential errors where an assignment or function call was intended.

Config

Three arguments may be optionally provided:

  • allow-fast-null-checks allows to use logical operators to perform fast null checks and perform method or function calls for side effects (e.g. e && e.preventDefault()).
  • allow-new allows 'new' expressions for side effects (e.g. new ModifyGlobalState();.
  • allow-tagged-template allows tagged templates for side effects (e.g. this.add\foo`;`.
Examples
"no-unused-expression": true
"no-unused-expression": true,allow-fast-null-checks
Schema
{
  "type": "array",
  "items": {
    "type": "string",
    "enum": [
      "allow-fast-null-checks",
      "allow-new",
      "allow-tagged-template"
    ]
  },
  "minLength": 0,
  "maxLength": 3
}

For more information see this page.

Expected property shorthand in object literal ('{chains}').
Open

  chains: chains,

Rule: object-literal-shorthand

Enforces/disallows use of ES6 object literal shorthand.

Notes
  • Has Fix

Config

"always" assumed to be default option, thus with no options provided the rule enforces object literal methods and properties shorthands. With "never" option provided, any shorthand object literal syntax causes an error.

The rule can be configured in a more granular way. With {"property": "never"} provided (which is equivalent to {"property": "never", "method": "always"}), the rule only flags property shorthand assignments, and respectively with {"method": "never"} (equivalent to {"property": "always", "method": "never"}), the rule fails only on method shorthands.

Examples
"object-literal-shorthand": true
"object-literal-shorthand": true,never
"object-literal-shorthand": true,[object Object]
Schema
{
  "oneOf": [
    {
      "type": "string",
      "enum": [
        "never"
      ]
    },
    {
      "type": "object",
      "properties": {
        "property": {
          "type": "string",
          "enum": [
            "never"
          ]
        },
        "method": {
          "type": "string",
          "enum": [
            "never"
          ]
        }
      },
      "minProperties": 1,
      "maxProperties": 2
    }
  ]
}

For more information see this page.

Missing semicolon
Open

}

Rule: semicolon

Enforces consistent semicolon usage at the end of every statement.

Notes
  • Has Fix

Config

One of the following arguments must be provided:

  • "always" enforces semicolons at the end of every statement.
  • "never" disallows semicolons at the end of every statement except for when they are necessary.

The following arguments may be optionally provided:

  • "ignore-interfaces" skips checking semicolons at the end of interface members.
  • "ignore-bound-class-methods" skips checking semicolons at the end of bound class methods.
  • "strict-bound-class-methods" disables any special handling of bound class methods and treats them as any other assignment. This option overrides "ignore-bound-class-methods".
Examples
"semicolon": true,always
"semicolon": true,never
"semicolon": true,always,ignore-interfaces
"semicolon": true,always,ignore-bound-class-methods
Schema
{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "always",
        "never"
      ]
    },
    {
      "type": "string",
      "enum": [
        "ignore-interfaces"
      ]
    }
  ],
  "additionalItems": false
}

For more information see this page.

Missing semicolon
Open

import type { Metadata } from "next";
Severity: Minor
Found in web-devtools/src/app/layout.tsx by tslint

Rule: semicolon

Enforces consistent semicolon usage at the end of every statement.

Notes
  • Has Fix

Config

One of the following arguments must be provided:

  • "always" enforces semicolons at the end of every statement.
  • "never" disallows semicolons at the end of every statement except for when they are necessary.

The following arguments may be optionally provided:

  • "ignore-interfaces" skips checking semicolons at the end of interface members.
  • "ignore-bound-class-methods" skips checking semicolons at the end of bound class methods.
  • "strict-bound-class-methods" disables any special handling of bound class methods and treats them as any other assignment. This option overrides "ignore-bound-class-methods".
Examples
"semicolon": true,always
"semicolon": true,never
"semicolon": true,always,ignore-interfaces
"semicolon": true,always,ignore-bound-class-methods
Schema
{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "always",
        "never"
      ]
    },
    {
      "type": "string",
      "enum": [
        "ignore-interfaces"
      ]
    }
  ],
  "additionalItems": false
}

For more information see this page.

unused expression, expected an assignment or function call
Open

import IHomeGateway from "@kleros/kleros-v2-contracts/artifacts/src/gateway/interfaces/IHomeGateway.sol/IHomeGateway.json" assert { type: "json" };
Severity: Minor
Found in web-devtools/wagmi.config.ts by tslint

Rule: no-unused-expression

Disallows unused expression statements.

Unused expressions are expression statements which are not assignments or function calls (and thus usually no-ops).

Rationale

Detects potential errors where an assignment or function call was intended.

Config

Three arguments may be optionally provided:

  • allow-fast-null-checks allows to use logical operators to perform fast null checks and perform method or function calls for side effects (e.g. e && e.preventDefault()).
  • allow-new allows 'new' expressions for side effects (e.g. new ModifyGlobalState();.
  • allow-tagged-template allows tagged templates for side effects (e.g. this.add\foo`;`.
Examples
"no-unused-expression": true
"no-unused-expression": true,allow-fast-null-checks
Schema
{
  "type": "array",
  "items": {
    "type": "string",
    "enum": [
      "allow-fast-null-checks",
      "allow-new",
      "allow-tagged-template"
    ]
  },
  "minLength": 0,
  "maxLength": 3
}

For more information see this page.

Expected a 'for-of' loop instead of a 'for' loop with this simple iteration
Open

  for (let i = 0; i < voteIDs.length; i++) {

Rule: prefer-for-of

Recommends a 'for-of' loop over a standard 'for' loop if the index is only used to access the array being iterated.

Rationale

A for(... of ...) loop is easier to implement and read when the index is not needed.

Config

Not configurable.

Examples
"prefer-for-of": true

For more information see this page.

missing whitespace
Open

export const getDisputeRequestParamsFromTxn = async (hash: `0x${string}`, chainId: number) => {

Rule: whitespace

Enforces whitespace style conventions.

Rationale

Helps maintain a readable, consistent style in your codebase.

Notes
  • Has Fix

Config

Several arguments may be optionally provided:

  • "check-branch" checks branching statements (if/else/for/while) are followed by whitespace.
  • "check-decl"checks that variable declarations have whitespace around the equals token.
  • "check-operator" checks for whitespace around operator tokens.
  • "check-module" checks for whitespace in import & export statements.
  • "check-separator" checks for whitespace after separator tokens (,/;).
  • "check-rest-spread" checks that there is no whitespace after rest/spread operator (...).
  • "check-type" checks for whitespace before a variable type specification.
  • "check-typecast" checks for whitespace between a typecast and its target.
  • "check-type-operator" checks for whitespace between type operators | and &.
  • "check-preblock" checks for whitespace before the opening brace of a block.
  • "check-postbrace" checks for whitespace after an opening brace.
Examples
"whitespace": true,check-branch,check-operator,check-typecast
Schema
{
  "type": "array",
  "items": {
    "type": "string",
    "enum": [
      "check-branch",
      "check-decl",
      "check-operator",
      "check-module",
      "check-separator",
      "check-rest-spread",
      "check-type",
      "check-typecast",
      "check-type-operator",
      "check-preblock",
      "check-postbrace"
    ]
  },
  "minLength": 0,
  "maxLength": 11
}

For more information see this page.

== should be ===
Open

  if (name == "arbitrum-one") return BigInt.fromI32(42161);

Rule: triple-equals

Requires === and !== in place of == and !=.

Config

Two arguments may be optionally provided:

  • "allow-null-check" allows == and != when comparing to null.
  • "allow-undefined-check" allows == and != when comparing to undefined.
Examples
"triple-equals": true
"triple-equals": true,allow-null-check
"triple-equals": true,allow-undefined-check
Schema
{
  "type": "array",
  "items": {
    "type": "string",
    "enum": [
      "allow-null-check",
      "allow-undefined-check"
    ]
  },
  "minLength": 0,
  "maxLength": 2
}

For more information see this page.

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

  let coherencyRatio = totalCoherentVotes.toBigDecimal().div(denominator);
Severity: Minor
Found in subgraph/core/src/entities/User.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.

unused expression, expected an assignment or function call
Open

  publicClient: PublicClient

Rule: no-unused-expression

Disallows unused expression statements.

Unused expressions are expression statements which are not assignments or function calls (and thus usually no-ops).

Rationale

Detects potential errors where an assignment or function call was intended.

Config

Three arguments may be optionally provided:

  • allow-fast-null-checks allows to use logical operators to perform fast null checks and perform method or function calls for side effects (e.g. e && e.preventDefault()).
  • allow-new allows 'new' expressions for side effects (e.g. new ModifyGlobalState();.
  • allow-tagged-template allows tagged templates for side effects (e.g. this.add\foo`;`.
Examples
"no-unused-expression": true
"no-unused-expression": true,allow-fast-null-checks
Schema
{
  "type": "array",
  "items": {
    "type": "string",
    "enum": [
      "allow-fast-null-checks",
      "allow-new",
      "allow-tagged-template"
    ]
  },
  "minLength": 0,
  "maxLength": 3
}

For more information see this page.

Missing semicolon
Open

  publicClient: PublicClient

Rule: semicolon

Enforces consistent semicolon usage at the end of every statement.

Notes
  • Has Fix

Config

One of the following arguments must be provided:

  • "always" enforces semicolons at the end of every statement.
  • "never" disallows semicolons at the end of every statement except for when they are necessary.

The following arguments may be optionally provided:

  • "ignore-interfaces" skips checking semicolons at the end of interface members.
  • "ignore-bound-class-methods" skips checking semicolons at the end of bound class methods.
  • "strict-bound-class-methods" disables any special handling of bound class methods and treats them as any other assignment. This option overrides "ignore-bound-class-methods".
Examples
"semicolon": true,always
"semicolon": true,never
"semicolon": true,always,ignore-interfaces
"semicolon": true,always,ignore-bound-class-methods
Schema
{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "always",
        "never"
      ]
    },
    {
      "type": "string",
      "enum": [
        "ignore-interfaces"
      ]
    }
  ],
  "additionalItems": false
}

For more information see this page.

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