chore: convert jest-cli and jest-validate to esm

CHANGELOG.md

@@ -23,8 +23,10 @@
 - `[*]` Add Node 12 to CI ([#8411](https://github.com/facebook/jest/pull/8411))
 - `[*]` [**BREAKING**] Upgrade to Micromatch v4 ([#8852](https://github.com/facebook/jest/pull/8852))
 - `[docs]` Fix broken link pointing to legacy JS file in "Snapshot Testing".
+- `[jest-cli]` [**BREAKING**] Use ESM exports ([#8874](https://github.com/facebook/jest/pull/8874))
 - `[jest-environment-jsdom]` [**BREAKING**] Upgrade JSDOM from v11 to v15 ([#8851](https://github.com/facebook/jest/pull/8851))
 - `[jest-util]` [**BREAKING**] Remove deprecated exports ([#8863](https://github.com/facebook/jest/pull/8863))
+- `[jest-validate]` [**BREAKING**] Use ESM exports ([#8874](https://github.com/facebook/jest/pull/8874))
 
 ### Performance
 

packages/jest-cli/src/index.ts

@@ -6,20 +6,11 @@
  */
 
 // TODO: remove @jest/core exports for the next major
-import {
+export {
   SearchSource,
   TestScheduler,
   TestWatcher,
   getVersion,
   runCLI,
 } from '@jest/core';
-import {run} from './cli';
-
-export = {
-  SearchSource,
-  TestScheduler,
-  TestWatcher,
-  getVersion,
-  run,
-  runCLI,
-};
+export {run} from './cli';

packages/jest-jasmine2/src/index.ts

@@ -38,7 +38,7 @@ async function jasmine2(
   });
 
   const env = jasmine.getEnv();
-  const jasmineInterface = jasmineFactory.interface(jasmine, env);
+  const jasmineInterface = jasmineFactory._interface(jasmine, env);
   Object.assign(environment.global, jasmineInterface);
   env.addReporter(jasmineInterface.jsApiReporter);
 

packages/jest-jasmine2/src/jasmine/jasmineLight.ts

@@ -40,7 +40,7 @@ import SpyRegistry from './spyRegistry';
 import Suite from './Suite';
 import Timer from './Timer';
 
-const create = function(createOptions: Record<string, any>): Jasmine {
+export const create = function(createOptions: Record<string, any>): Jasmine {
   const j$ = {...createOptions} as Jasmine;
 
   j$._DEFAULT_TIMEOUT_INTERVAL = createOptions.testTimeout || 5000;
@@ -63,7 +63,8 @@ const create = function(createOptions: Record<string, any>): Jasmine {
   return j$;
 };
 
-const _interface = function(jasmine: Jasmine, env: any) {
+// Interface is a reserved word in strict mode, so can't export it as ESM
+export const _interface = function(jasmine: Jasmine, env: any) {
   const jasmineInterface = {
     describe(description: string, specDefinitions: Function) {
       return env.describe(description, specDefinitions);
@@ -146,6 +147,3 @@ const _interface = function(jasmine: Jasmine, env: any) {
 
   return jasmineInterface;
 };
-
-// Interface is a reserved word in strict mode, so can't export it as ESM
-export = {create, interface: _interface};

packages/jest-validate/src/index.ts

@@ -5,22 +5,12 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {
+export {
   ValidationError,
   createDidYouMeanMessage,
   format,
   logValidationWarning,
 } from './utils';
-import validate from './validate';
-import validateCLIOptions from './validateCLIOptions';
-import {multipleValidOptions} from './condition';
-
-export = {
-  ValidationError,
-  createDidYouMeanMessage,
-  format,
-  logValidationWarning,
-  multipleValidOptions,
-  validate,
-  validateCLIOptions,
-};
+export {default as validate} from './validate';
+export {default as validateCLIOptions} from './validateCLIOptions';
+export {multipleValidOptions} from './condition';