react/jsx-props-no-spread-multi Correctness
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.
Example
Examples of incorrect code for this rule:
jsx
<App {...props} myAttr="1" {...props} />Examples of correct code for this rule:
jsx
<App myAttr="1" {...props} />
<App {...props} myAttr="1" />