react/jsx-props-no-spread-multi Correctness

🛠️ An auto-fix is available for this rule.

What it does

Enforces that any unique expression is only spread once.

Why is this bad?

Generally spreading the same expression twice is an indicator of a mistake since any attribute between the spreads may be overridden when the intent was not to. Even when that is not the case this will lead to unnecessary computations being performed.

Examples

Examples of incorrect code for this rule:

<App {...props} myAttr="1" {...props} />;

Examples of correct code for this rule:

<App myAttr="1" {...props} />
<App {...props} myAttr="1" />

How to use

To enable this rule in the CLI or using the config file, you can use:

CLI

oxlint --deny react/jsx-props-no-spread-multi --react-plugin

Config (.oxlintrc.json)

{
  "plugins": ["react"],
  "rules": {
    "react/jsx-props-no-spread-multi": "error"
  }
}

References

• Rule Source