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noSparseArray (since v1.0.0)

Diagnostic Category: lint/suspicious/noSparseArray

Source: no-sparse-array

Disallow sparse arrays

Examples

Invalid

[1,,2]

suspicious/noSparseArray.js:1:1 lint/suspicious/noSparseArray  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ This array contains an empty slot.
  
  > 1 │ [1,,2]
      │ ^^^^^^
    2 │ 
  
  ℹ Unsafe fix: Replace hole with undefined
  
    1 │ [1,·undefined,2]
      │    ++++++++++