Severity: warning
Category: lint
Stage: Stage 3

Description

A line's leading indentation mixes spaces and tabs. Mixed indentation renders inconsistently across editors and breaks diffs. Pick one style per file (spaces are the project default).

Example

// ✗ lint warning — line mixes tab and spaces
export function f(): number {
 \t const x: number = 1   // SJS-L018
  return x
}

Fix

Use consistent indentation (spaces only, or tabs only):

// ✓ correct
export function f(): number {
  const x: number = 1
  return x
}

Run superjs format to normalize indentation where the formatter supports it.

Configuration

{
  "lint": {
    "L018": "error" | "warn" | "off"
  }
}

Default: "warn" in standard mode, "error" in --strict mode.

Related codes

• SJS-L001 — prefer const