bitttttten

export default function transformer(file, api, options) {
  const j = api.jscodeshift;
  const root = j(file.source);

  const removeIfUnused = (importSpecifier, importDeclaration) => {
    const varName = importSpecifier.value.local.name;
    if (varName === "React") {
      return false;
    }

bitttttten

React recently introduced an experimental profiler API. This page gives instructions on how to use this API in a production release of your app.

Table of Contents

• Profiling in production
  • Create React App
  • Webpack 4

Profiling in production

React DOM automatically supports profiling in development mode for v16.5+, but since profiling adds some small additional overhead it is opt-in for production mode. This gist explains how to opt-in.