# All files / src/helpers debugShallow.ts

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     import * as React from 'react';
    import type { ReactTestInstance } from 'react-test-renderer';
    import { shallowInternal } from '../shallow';
    import format from './format';

    /**
     * Log pretty-printed shallow test component instance
     */
    export default function debugShallow(
      instance: ReactTestInstance | React.ReactElement<any>,
      message?: string
    ) {
      const { output } = shallowInternal(instance);

      if (message) {
        // eslint-disable-next-line no-console
        console.log(`${message}\n\n`, format(output));
      } else {
        // eslint-disable-next-line no-console
        console.log(format(output));
      }
    }