# comma-spacing

📝 Enforce consistent spacing before and after commas in JSON and SOML.

🚫 Disabled by default.

🔧 This rule is automatically fixable by the [`--fix` CLI option](https://eslint.org/docs/latest/user-guide/command-line-interface#--fix).

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Enforces no whitespace before commas and exactly one ASCII space after commas on the same line in JSON, JSONC, and JSON5 using [`@eslint/json`](https://github.com/eslint/json), and in SOML using [`eslint-soml`](https://github.com/soml-lang/eslint-soml).

Preserves line breaks and surrounding whitespace, including comma-first layouts. Ignores spacing after trailing commas directly before `]` or `}`, but still checks spacing before them.

Checks spacing between commas and adjacent comments, preserving comment contents and whitespace beyond them. For example, `[1,/* comment */]` becomes `[1, /* comment */]`. Commas inside strings and comments are ignored.

This rule has no options and does not support `eslint-plugin-jsonc` languages.

For JavaScript and TypeScript, use [`@stylistic/comma-spacing`](https://eslint.style/rules/comma-spacing), which allows multiple spaces after commas.

## Examples

### Incorrect

```json
[1 ,2,  3]
```

```json
{"first": 1,"second": 2}
```

### Correct

```json
[1, 2, 3]
```

```json
{"first": 1, "second": 2}
```

```jsonc
[1, /* Keep comment */2]
```

```json5
[1, 2,]
```