Exporting Functions With Reactjs And Babel
I have a project using reactjs, which is transpiled by babel. I use the es2015 and react transforms in my .babelrc. I am currently refactoring and in my first pass I basically did
Solution 1:
It's the same as defining the function as a variable but just adding export to the front e.g. (using ES6 syntax)
exportconstrender = () => (
// Some other JSX
);
or alternatively
exportvar render = function() {
return (
// Some other JSX
);
};
Solution 2:
Exporting functions is no different than exporting class. Basic rules must be followed .
- Function/Class name should in CAPS
- There will be only one "export" line .
- Every function return body should have a single tag encompassing other parts. Most commonly used is a tag .
- This usually works: import App from "./App"; where App.js is my jsx file. You can do an explicit import too . : import AllApp from "./classhouse.jsx";
- Name of the js/jsx file does not matter. It can be anycase (lower, upper).
- For returning multiple functions from one file, you need to create one more function , that encompasses all other functions .
See the example below showing multiple functions returned.
importReactfrom'react';
/* All function / class names HAS TO BE in CAPS */varApp1 = function (){
return (
<div><h1>
Hello World
</h1></div>
)
}
varApp2 = function (){
return (
<div><h1>World Number 2 </h1></div>
);
}
varAllApp = function (){
return (
<div><App1 /><App2 /></div>
);
}
exportdefaultAllApp;
My index.js file:
importReactfrom'react';
importReactDOM from"react-dom";
importAllAppfrom"./classhouse.jsx"; /* Note: App name has to be in CAPS */importAppfrom"./App";
const jsx =
<div><AllApp /><App /></div>ReactDOM.render(jsx, document.getElementById("root"));
Solution 3:
You are writing functional components
in wrong way.
functionWelcome() {
return<h1>Hello World</h1>;
}
or
constWelcome = () => {
return<p>Hello Wrold</p>
}
exportdefaultWelcome ;
ES6 doesn't allow export default const. You must declare the constant first then export it.
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