example.js

const { transform, execute } = require("./lib");
const ReactNativeWeb = require("react-native-web");
const {render} = require("react-dom");

const example = `
...jestsnapshotcodegoeshere
`;

const out = transform(example);
const node = execute(out, {
  components: ReactNativeWeb,
});

const container = document.createElement("div");
container.style.margin = "20px auto";
container.style.width = "500px";
document.body.appendChild(container);
render(node, container);

lib.js

const React = require("react");
const babelCore = require("babel-core");

exports.transform = (snapshot) => {
  const code =
    snapshot
    .replace(/Object {/g, "{")
    .replace(/Array \[/g, "[")
    .replace(/\[Function .*\]/g, "()=>{}");
  return babelCore.transform(code, {
    plugins: [require("babel-plugin-transform-react-jsx")]
  });
};

exports.execute = (out, opts = {}) => {
  const ctx = Object.assign({
    React,
  }, opts.components);
  with (ctx) {
    return eval(out.code);
  }
};