jsonc/no-sparse-arrays

disallow sparse arrays

• ⚙️ This rule is included in all of "plugin:jsonc/recommended-with-json", "plugin:jsonc/recommended-with-json5" and "plugin:jsonc/recommended-with-jsonc".

📖 Rule Details

This rule disallows sparse array literals which have "holes" where commas are not preceded by elements. It does not apply to a trailing comma following the last element.

JSON, JSONC and JSON5 do not allow arrays contain empty slots.

/* eslint jsonc/no-sparse-arrays: 'error' */ { /* ✓ GOOD */ "GOOD": [1, 2, 3, 4], "GOOD": [1, 2, 3, 4,], /* ✗ BAD */ "BAD": [1, , , 4], "BAD": [, 2, 3, 4] }

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🔧 Options

Nothing.

👫 Related rules

• no-sparse-arrays

🚀 Version

This rule was introduced in eslint-plugin-jsonc v0.2.0

🔍 Implementation

• Rule source
• Test source

^{Taken with ❤️ from ESLint core}