fix

packages/jest-reporters/src/CoverageReporter.ts

@@ -9,6 +9,7 @@ import * as path from 'path';
 import {mergeProcessCovs} from '@bcoe/v8-coverage';
 import chalk = require('chalk');
 import glob = require('glob');
+import * as fs from 'graceful-fs';
 import istanbulCoverage = require('istanbul-lib-coverage');
 import istanbulReport = require('istanbul-lib-report');
 import libSourceMaps = require('istanbul-lib-source-maps');
@@ -24,7 +25,8 @@ import type {
 import type {Config} from '@jest/types';
 import {clearLine, isInteractive} from 'jest-util';
 import {Worker} from 'jest-worker';
-import BaseReporter from './base_reporter';
+import BaseReporter from './BaseReporter';
+import getWatermarks from './getWatermarks';
 import type {
   Context,
   CoverageReporterOptions,