Fix.

node_modules/@jest/reporters/build/generateEmptyCoverage.js

@@ -0,0 +1,75 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true
+});
+exports.default = _default;
+
+function _istanbulLibInstrument() {
+  const data = require('istanbul-lib-instrument');
+
+  _istanbulLibInstrument = function _istanbulLibInstrument() {
+    return data;
+  };
+
+  return data;
+}
+
+function _istanbulLibCoverage() {
+  const data = require('istanbul-lib-coverage');
+
+  _istanbulLibCoverage = function _istanbulLibCoverage() {
+    return data;
+  };
+
+  return data;
+}
+
+function _transform() {
+  const data = require('@jest/transform');
+
+  _transform = function _transform() {
+    return data;
+  };
+
+  return data;
+}
+
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+function _default(source, filename, globalConfig, config, changedFiles) {
+  const coverageOptions = {
+    changedFiles,
+    collectCoverage: globalConfig.collectCoverage,
+    collectCoverageFrom: globalConfig.collectCoverageFrom,
+    collectCoverageOnlyFrom: globalConfig.collectCoverageOnlyFrom
+  };
+  let coverageWorkerResult = null;
+
+  if ((0, _transform().shouldInstrument)(filename, coverageOptions, config)) {
+    // Transform file with instrumentation to make sure initial coverage data is well mapped to original code.
+    const _transformSource = new (_transform()).ScriptTransformer(
+        config
+      ).transformSource(filename, source, true),
+      code = _transformSource.code,
+      mapCoverage = _transformSource.mapCoverage,
+      sourceMapPath = _transformSource.sourceMapPath;
+
+    const extracted = (0, _istanbulLibInstrument().readInitialCoverage)(code); // Check extracted initial coverage is not null, this can happen when using /* istanbul ignore file */
+
+    if (extracted) {
+      coverageWorkerResult = {
+        coverage: (0, _istanbulLibCoverage().createFileCoverage)(
+          extracted.coverageData
+        ),
+        sourceMapPath: mapCoverage ? sourceMapPath : null
+      };
+    }
+  }
+
+  return coverageWorkerResult;
+}