packages/babel-plugin-transform-property-mutators/src/index.js
import { declare } from "@babel/helper-plugin-utils";
import * as defineMap from "@babel/helper-define-map";
import { types as t } from "@babel/core";
export default declare(api => {
api.assertVersion(7);
return {
name: "transform-property-mutators",
visitor: {
ObjectExpression(path, file) {
const { node } = path;
let hasAny = false;
for (const prop of (node.properties: Array)) {
if (prop.kind === "get" || prop.kind === "set") {
hasAny = true;
break;
}
}
if (!hasAny) return;
const mutatorMap = {};
node.properties = node.properties.filter(function (prop) {
if (!prop.computed && (prop.kind === "get" || prop.kind === "set")) {
defineMap.push(mutatorMap, prop, null, file);
return false;
} else {
return true;
}
});
path.replaceWith(
t.callExpression(
t.memberExpression(
t.identifier("Object"),
t.identifier("defineProperties"),
),
[node, defineMap.toDefineObject(mutatorMap)],
),
);
},
},
};
});