packages/babel-plugin-transform-member-expression-literals/src/index.js
import { declare } from "@babel/helper-plugin-utils";
import { types as t } from "@babel/core";
export default declare(api => {
api.assertVersion(7);
return {
name: "transform-member-expression-literals",
visitor: {
MemberExpression: {
exit({ node }) {
const prop = node.property;
if (
!node.computed &&
t.isIdentifier(prop) &&
!t.isValidES3Identifier(prop.name)
) {
// foo.default -> foo["default"]
node.property = t.stringLiteral(prop.name);
node.computed = true;
}
},
},
},
};
});