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babel-plugin-transform-class-properties
Advanced tools
Readme
This plugin transforms es2015 static class properties as well as properties declared with the es2016 property initializer syntax.
Below is a class with four class properties which will be transformed.
class Bork {
//Property initializer syntax
instanceProperty = "bork";
boundFunction = () => {
return this.instanceProperty;
}
//Static class properties
static staticProperty = "babelIsCool";
static staticFunction = function() {
return Bork.staticProperty;
}
}
let myBork = new Bork;
//Property initializers are not on the prototype.
console.log(myBork.prototype.boundFunction); // > undefined
//Bound functions are bound to the class instance.
console.log(myBork.boundFunction.call(undefined)); // > "bork"
//Static function exists on the class.
console.log(Bork.staticFunction()); // > "babelIsCool"
npm install --save-dev babel-plugin-transform-class-properties
.babelrc
(Recommended).babelrc
// without options
{
"plugins": ["transform-class-properties"]
}
// with options
{
"plugins": [
["transform-class-properties", { "spec": true }]
]
}
babel --plugins transform-class-properties script.js
require("babel-core").transform("code", {
plugins: ["transform-class-properties"]
});
spec
boolean
, defaults to false
.
Class properties are compiled to use Object.defineProperty
. Static fields are now defined even if they are not initialized.
FAQs
This plugin transforms static class properties as well as properties declared with the property initializer syntax
The npm package babel-plugin-transform-class-properties receives a total of 682,842 weekly downloads. As such, babel-plugin-transform-class-properties popularity was classified as popular.
We found that babel-plugin-transform-class-properties demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 6 open source maintainers collaborating on the project.
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