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src/scales/base.ts

Summary

Maintainability
B
4 hrs
Test Coverage

Function constructor has 55 lines of code (exceeds 25 allowed). Consider refactoring.
Open

    constructor(dataFrame: DataFrame, scaleConfig: ScaleConfig) {

        this._fields = {};

        var data;
Severity: Major
Found in src/scales/base.ts - About 2 hrs to fix

    Function constructor has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.
    Open

        constructor(dataFrame: DataFrame, scaleConfig: ScaleConfig) {

        this._fields = {};

        var data;
    Severity: Minor
    Found in src/scales/base.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

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

            var scaleFn = Object
    Severity: Minor
    Found in src/scales/base.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 map_value = (dimType: string) => {
    Severity: Minor
    Found in src/scales/base.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.

    'Object.assign' returns the first argument. Prefer object spread if you want a new object.
    Open

                    cfg.__fixup__ = Object.assign(
                    cfg.__fixup__,
                    fn(Object.assign({}, cfg, cfg.__fixup__)));
    Severity: Minor
    Found in src/scales/base.ts by tslint

    Rule: prefer-object-spread

    Enforces the use of the ES2018 object spread operator over Object.assign() where appropriate.

    Rationale

    Object spread allows for better type checking and inference.

    Notes
    • Has Fix

    Config

    Not configurable.

    Examples
    "prefer-object-spread": true

    For more information see this page.

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

            var series = scale.hasOwnProperty('series') ?
    Severity: Minor
    Found in src/scales/base.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 'map_value' is never reassigned; use 'const' instead of 'var'.
    Open

    var map_value = (dimType: string) => {
    Severity: Minor
    Found in src/scales/base.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.

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

            var data;
    Severity: Minor
    Found in src/scales/base.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 'series' is never reassigned; use 'const' instead of 'var'.
    Open

            var series = scale.hasOwnProperty('series') ?
    Severity: Minor
    Found in src/scales/base.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.

    'Object.assign' returns the first argument. Prefer object spread if you want a new object.
    Open

                    this.scaleConfig = Object.assign(this.scaleConfig, this.scaleConfig.__fixup__);
    Severity: Minor
    Found in src/scales/base.ts by tslint

    Rule: prefer-object-spread

    Enforces the use of the ES2018 object spread operator over Object.assign() where appropriate.

    Rationale

    Object spread allows for better type checking and inference.

    Notes
    • Has Fix

    Config

    Not configurable.

    Examples
    "prefer-object-spread": true

    For more information see this page.

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

                    var r = {} as DataFilter;
    Severity: Minor
    Found in src/scales/base.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 generateHashFunction = (varSet, interval) => {
    Severity: Minor
    Found in src/scales/base.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.

    Type assertion on object literals is forbidden, use a type annotation instead.
    Open

                    var r = {} as DataFilter;
    Severity: Minor
    Found in src/scales/base.ts by tslint

    Rule: no-object-literal-type-assertion

    Forbids an object literal to appear in a type assertion expression. Casting to any or to unknown is still allowed.

    Rationale

    Always prefer const x: T = { ... }; to const x = { ... } as T;. The type assertion in the latter case is either unnecessary or hides an error. The compiler will warn for excess properties with this syntax, but not missing required fields. For example: const x: { foo: number } = {} will fail to compile, but const x = {} as { foo: number } will succeed. Additionally, the const assertion const x = { foo: 1 } as const, introduced in TypeScript 3.4, is considered beneficial and is ignored by this rule.

    Notes
    • TypeScript Only

    Config

    One option may be configured:

    • allow-arguments allows type assertions to be used on object literals inside call expressions.
    Examples
    "no-object-literal-type-assertion": true
    "no-object-literal-type-assertion": true,[object Object]
    Schema
    {
  "type": "object",
  "properties": {
    "allow-arguments": {
      "type": "boolean"
    }
  },
  "additionalProperties": false
}

    For more information see this page.

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

            var vars = this.getVarSet(data, scaleConfig);
    Severity: Minor
    Found in src/scales/base.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 'generateHashFunction' is never reassigned; use 'const' instead of 'var'.
    Open

    var generateHashFunction = (varSet, interval) => {
    Severity: Minor
    Found in src/scales/base.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.

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

            var scaleFn = Object
    Severity: Minor
    Found in src/scales/base.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.

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

                    var cfg = this.scaleConfig;
    Severity: Minor
    Found in src/scales/base.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 'cfg' is never reassigned; use 'const' instead of 'var'.
    Open

                    var cfg = this.scaleConfig;
    Severity: Minor
    Found in src/scales/base.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.

    Use the object spread operator instead.
    Open

                        fn(Object.assign({}, cfg, cfg.__fixup__)));
    Severity: Minor
    Found in src/scales/base.ts by tslint

    Rule: prefer-object-spread

    Enforces the use of the ES2018 object spread operator over Object.assign() where appropriate.

    Rationale

    Object spread allows for better type checking and inference.

    Notes
    • Has Fix

    Config

    Not configurable.

    Examples
    "prefer-object-spread": true

    For more information see this page.

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

                let leaveDimsInWhereArgsOrEx = (f: DataFilter) => {
    Severity: Minor
    Found in src/scales/base.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.

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