Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

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.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

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.

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.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

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.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: prefer-conditional-expression

Recommends to use a conditional expression instead of assigning to the same thing in each branch of an if statement.

Rationale

This reduces duplication and can eliminate an unnecessary variable declaration.

Config

If check-else-if is specified, the rule also checks nested if-else-if statements.

Examples

"prefer-conditional-expression": true

"prefer-conditional-expression": true,check-else-if

Schema

{
  "type": "string",
  "enum": [
    "check-else-if"
  ]
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

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.

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.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

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.

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.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

Rule: indent

Enforces indentation with tabs or spaces.

Rationale

Using only one of tabs or spaces for indentation leads to more consistent editor behavior, cleaner diffs in version control, and easier programmatic manipulation.

Notes

• Has Fix

Config

One of the following arguments must be provided:

• spaces enforces consistent spaces.
• tabs enforces consistent tabs.

A second optional argument specifies indentation size:

• 2 enforces 2 space indentation.
• 4 enforces 4 space indentation.

Indentation size is required for auto-fixing, but not for rule checking.

NOTE: auto-fixing will only convert invalid indent whitespace to the desired type, it will not fix invalid whitespace sizes.

Examples

"indent": true,spaces

"indent": true,spaces,4

"indent": true,tabs,2

Schema

{
  "type": "array",
  "items": [
    {
      "type": "string",
      "enum": [
        "tabs",
        "spaces"
      ]
    },
    {
      "type": "number",
      "enum": [
        2,
        4
      ]
    }
  ],
  "minLength": 0,
  "maxLength": 5
}

For more information see this page.

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.

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.

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.

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.