5df70e6a94
* Fix bad Scope#parent caching Now, we traverse the path until we find a parent scope. Fixes #6057. * Fix bad merge * Remove cached data * I need to stop using Github editor * Fix infinite loops due to scopable paths being moved up
babel-traverse
babel-traverse maintains the overall tree state, and is responsible for replacing, removing, and adding nodes.
Install
$ npm install --save babel-traverse
Usage
We can use it alongside Babylon to traverse and update nodes:
import * as babylon from "babylon";
import traverse from "babel-traverse";
const code = `function square(n) {
return n * n;
}`;
const ast = babylon.parse(code);
traverse(ast, {
enter(path) {
if (path.isIdentifier({ name: "n" })) {
path.node.name = "x";
}
}
});