c438209718
When multiple declarators are present in a declaration, we want to insert the constant element inside the declaration rather than placing it before because it may rely on a declarator inside that same declaration.
babel-plugin-transform-react-constant-elements
Treat React JSX elements as value types and hoist them to the highest scope
Example
In
const Hr = () => {
return <hr className="hr" />;
};
Out
const _ref = <hr className="hr" />;
const Hr = () => {
return _ref;
};
Deopts
-
Spread Operator
<div {...foobar} /> -
Refs
<div ref="foobar" /> <div ref={node => this.node = node} /> -
Composite Components
const ComponentA = () => <div><MyCustomComponent /></div>;
Installation
npm install --save-dev babel-plugin-transform-react-constant-elements
Usage
Via .babelrc (Recommended)
.babelrc
{
"plugins": ["transform-react-constant-elements"]
}
Via CLI
babel --plugins transform-react-constant-elements script.js
Via Node API
require("babel-core").transform("code", {
plugins: ["transform-react-constant-elements"]
});