packages/babel-plugin-transform-object-super/src/index.js
import { declare } from "@babel/helper-plugin-utils";
import ReplaceSupers from "@babel/helper-replace-supers";
import { types as t } from "@babel/core";
function replacePropertySuper(path, getObjectRef, file) {
const replaceSupers = new ReplaceSupers({
getObjectRef: getObjectRef,
methodPath: path,
file: file,
});
replaceSupers.replace();
}
export default declare(api => {
api.assertVersion(7);
return {
name: "transform-object-super",
visitor: {
ObjectExpression(path, state) {
let objectRef;
const getObjectRef = () =>
(objectRef = objectRef || path.scope.generateUidIdentifier("obj"));
path.get("properties").forEach(propPath => {
if (!propPath.isMethod()) return;
replacePropertySuper(propPath, getObjectRef, state);
});
if (objectRef) {
path.scope.push({ id: t.cloneNode(objectRef) });
path.replaceWith(
t.assignmentExpression("=", t.cloneNode(objectRef), path.node),
);
}
},
},
};
});