Function inject

packages/react-devtools-shared/src/hook.js:206–237

(renderer: ReactRenderer)

  const isProfiling = shouldStartProfilingNow;
  let uidCounter = 0;
  function inject(renderer: ReactRenderer): number {
    const id = ++uidCounter;
    renderers.set(id, renderer);

    const reactBuildType = hasDetectedBadDCE
      ? 'deadcode'
      : detectReactBuildType(renderer);

    hook.emit('renderer', {
      id,
      renderer,
      reactBuildType,
    });

    const rendererInterface = attachRenderer(
      hook,
      id,
      renderer,
      target,
      isProfiling,
      profilingSettings,
    );
    if (rendererInterface != null) {
      hook.rendererInterfaces.set(id, rendererInterface);
      hook.emit('renderer-attached', {id, rendererInterface});
    } else {
      hook.hasUnsupportedRendererAttached = true;
      hook.emit('unsupported-renderer-version');
    }

    return id;
  }

  let hasDetectedBadDCE = false;