hunk.code_window:   FastField,
     FieldProps,
     FieldConfig,
     FormikProps,
     FormikConfig,
     FastFieldProps,
  
hunk.labels: keep keep add keep keep keep
hunk.after_edit:   FastFieldConfig,
  
hunk.file_path: test/Field.test.tsx
hunk.type: add
file: declare module 'react-testing-library';
  declare module 'tiny-warning' {
    export default function warning(condition: any, message: string): void;
  }
  
  declare module 'react-lifecycles-compat' {
    import React from 'react';
    export function polyfill<P>(
      Comp: React.ComponentType<P>
    ): React.ComponentType<P>;
  }
  
  declare module 'deepmerge' {
    export = deepmerge;
  
    function deepmerge<T>(
      x: Partial<T>,
      y: Partial<T>,
      options?: deepmerge.Options
    ): T;
    function deepmerge<T1, T2>(
      x: T1,
      y: T2,
      options?: deepmerge.Options
    ): T1 & T2;
  
    namespace deepmerge {
      interface Options {
        clone?: boolean;
        arrayMerge?(destination: any[], source: any[], options?: Options): any[];
        isMergeableObject?(value: object): boolean;
      }
  
      function all<T>(objects: Array<Partial<T>>, options?: Options): T;
    }
  }
  