chore: use import type (#9693)

Author: SimenB

TestUtils.ts

@@ -5,8 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-// eslint-disable-next-line import/no-extraneous-dependencies
-import {Config} from '@jest/types';
+import type {Config} from '@jest/types';
 
 const DEFAULT_GLOBAL_CONFIG: Config.GlobalConfig = {
   bail: 0,

e2e/Utils.ts

@@ -7,7 +7,7 @@
 
 import * as fs from 'fs';
 import * as path from 'path';
-import {Config} from '@jest/types';
+import type {Config} from '@jest/types';
 
 // eslint-disable-next-line import/named
 import {ExecaReturnValue, sync as spawnSync} from 'execa';

e2e/babel-plugin-jest-hoist/entry.ts

@@ -5,6 +5,6 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Color} from './types';
+import type {Color} from './types';
 
 export const color: Color = 'red';

e2e/runJest.ts

@@ -10,7 +10,7 @@ import * as path from 'path';
 import * as fs from 'fs';
 import {Writable} from 'stream';
 import execa = require('execa');
-import {FormattedTestResults} from '@jest/test-result';
+import type {FormattedTestResults} from '@jest/test-result';
 import stripAnsi = require('strip-ansi');
 import {normalizeIcons} from './Utils';
 

packages/babel-jest/src/index.ts

@@ -8,8 +8,8 @@
 import {createHash} from 'crypto';
 import * as fs from 'fs';
 import * as path from 'path';
-import {Transformer} from '@jest/transform';
-import {Config} from '@jest/types';
+import type {Transformer} from '@jest/transform';
+import type {Config} from '@jest/types';
 import {
   PartialConfig,
   TransformOptions,

packages/babel-plugin-jest-hoist/src/index.ts

@@ -6,11 +6,8 @@
  *
  */
 
-// Only used for types
-/* eslint-disable import/no-extraneous-dependencies */
-import {NodePath, Visitor} from '@babel/traverse';
-import {Identifier} from '@babel/types';
-/* eslint-enable */
+import type {NodePath, Visitor} from '@babel/traverse';
+import type {Identifier} from '@babel/types';
 
 // We allow `jest`, `expect`, `require`, all default Node.js globals and all
 // ES2015 built-ins to be used inside of a `jest.mock` factory.

packages/expect/src/index.ts

@@ -7,7 +7,7 @@
  */
 
 import * as matcherUtils from 'jest-matcher-utils';
-import {
+import type {
   AsyncExpectationResult,
   Expect,
   ExpectationResult,

packages/expect/src/jasmineUtils.ts

@@ -24,7 +24,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 /* eslint-disable */
 
-import {Tester} from './types';
+import type {Tester} from './types';
 
 // Extracted out of jasmine 2.5.2
 export function equals(

packages/expect/src/jestMatchersObject.ts

@@ -7,7 +7,7 @@
  */
 
 import {AsymmetricMatcher} from './asymmetricMatchers';
-import {Expect, MatchersObject, SyncExpectationResult} from './types';
+import type {Expect, MatchersObject, SyncExpectationResult} from './types';
 
 // Global matchers object holds the list of available matchers and
 // the state, that can hold matcher specific values that change over time.

packages/expect/src/matchers.ts

@@ -25,7 +25,7 @@ import {
   printWithType,
   stringify,
 } from 'jest-matcher-utils';
-import {MatcherState, MatchersObject} from './types';
+import type {MatcherState, MatchersObject} from './types';
 import {
   printCloseTo,
   printExpectedConstructorName,

packages/expect/src/spyMatchers.ts

@@ -21,7 +21,11 @@ import {
   printWithType,
   stringify,
 } from 'jest-matcher-utils';
-import {MatcherState, MatchersObject, SyncExpectationResult} from './types';
+import type {
+  MatcherState,
+  MatchersObject,
+  SyncExpectationResult,
+} from './types';
 import {equals} from './jasmineUtils';
 import {iterableEquality} from './utils';
 

packages/expect/src/toThrowMatchers.ts

@@ -26,7 +26,7 @@ import {
   printReceivedStringContainExpectedResult,
   printReceivedStringContainExpectedSubstring,
 } from './print';
-import {
+import type {
   ExpectationResult,
   MatcherState,
   MatchersObject,

packages/expect/src/types.ts

@@ -5,8 +5,8 @@
  * LICENSE file in the root directory of this source tree.
  *
  */
-import {Config} from '@jest/types';
-import * as jestMatcherUtils from 'jest-matcher-utils';
+import type {Config} from '@jest/types';
+import type * as jestMatcherUtils from 'jest-matcher-utils';
 import {INTERNAL_MATCHER_FLAG} from './jestMatchersObject';
 
 export type SyncExpectationResult = {

packages/jest-changed-files/src/git.ts

@@ -8,9 +8,9 @@
 
 import * as path from 'path';
 import execa = require('execa');
-import {Config} from '@jest/types';
+import type {Config} from '@jest/types';
 
-import {SCMAdapter} from './types';
+import type {SCMAdapter} from './types';
 
 const findChangedFilesUsingCommand = async (
   args: Array<string>,

packages/jest-changed-files/src/hg.ts

@@ -8,9 +8,9 @@
 
 import * as path from 'path';
 import execa = require('execa');
-import {Config} from '@jest/types';
+import type {Config} from '@jest/types';
 
-import {SCMAdapter} from './types';
+import type {SCMAdapter} from './types';
 
 const env = {...process.env, HGPLAIN: '1'};
 

packages/jest-changed-files/src/index.ts

@@ -7,15 +7,15 @@
  */
 
 import throat from 'throat';
-import {Config} from '@jest/types';
+import type {Config} from '@jest/types';
 
-import {ChangedFilesPromise, Options, Repos, SCMAdapter} from './types';
+import type {ChangedFilesPromise, Options, Repos, SCMAdapter} from './types';
 import git from './git';
 import hg from './hg';
 
 type RootPromise = ReturnType<SCMAdapter['getRoot']>;
 
-export {ChangedFiles, ChangedFilesPromise} from './types';
+export type {ChangedFiles, ChangedFilesPromise} from './types';
 
 function notEmpty<T>(value: T | null | undefined): value is T {
   return value != null;

packages/jest-changed-files/src/types.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Config} from '@jest/types';
+import type {Config} from '@jest/types';
 
 export type Options = {
   lastCommit?: boolean;

packages/jest-circus/src/__tests__/circusItTestError.test.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Global} from '@jest/types';
+import type {Global} from '@jest/types';
 
 let circusIt: Global.It;
 let circusTest: Global.It;

packages/jest-circus/src/__tests__/circusItTodoTestError.test.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Global} from '@jest/types';
+import type {Global} from '@jest/types';
 
 let circusIt: Global.It;
 

packages/jest-circus/src/eventHandler.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Circus} from '@jest/types';
+import type {Circus} from '@jest/types';
 import {TEST_TIMEOUT_SYMBOL} from './types';
 
 import {

packages/jest-circus/src/formatNodeAssertErrors.ts

@@ -6,7 +6,7 @@
  */
 
 import {AssertionError} from 'assert';
-import {Circus} from '@jest/types';
+import type {Circus} from '@jest/types';
 import {
   DiffOptions,
   diff,

packages/jest-circus/src/globalErrorHandlers.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Circus} from '@jest/types';
+import type {Circus} from '@jest/types';
 import {dispatch} from './state';
 
 const uncaught: NodeJS.UncaughtExceptionListener &

packages/jest-circus/src/index.ts

@@ -9,7 +9,7 @@ import chalk = require('chalk');
 import {bind as bindEach} from 'jest-each';
 import {formatExecError} from 'jest-message-util';
 import {ErrorWithStack, isPromise} from 'jest-util';
-import {Circus, Global} from '@jest/types';
+import type {Circus, Global} from '@jest/types';
 import {dispatch} from './state';
 
 type THook = (fn: Circus.HookFn, timeout?: number) => void;

packages/jest-circus/src/legacy-code-todo-rewrite/jestAdapter.ts

@@ -6,11 +6,11 @@
  */
 
 import * as path from 'path';
-import {Config} from '@jest/types';
-import {JestEnvironment} from '@jest/environment';
-import {TestResult} from '@jest/test-result';
+import type {Config} from '@jest/types';
+import type {JestEnvironment} from '@jest/environment';
+import type {TestResult} from '@jest/test-result';
 import Runtime = require('jest-runtime');
-import {SnapshotStateType} from 'jest-snapshot';
+import type {SnapshotStateType} from 'jest-snapshot';
 
 const FRAMEWORK_INITIALIZER = require.resolve('./jestAdapterInit');
 

packages/jest-circus/src/legacy-code-todo-rewrite/jestAdapterInit.ts

@@ -5,8 +5,8 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Circus, Config, Global} from '@jest/types';
-import {JestEnvironment} from '@jest/environment';
+import type {Circus, Config, Global} from '@jest/types';
+import type {JestEnvironment} from '@jest/environment';
 import {
   AssertionResult,
   Status,

packages/jest-circus/src/run.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Circus} from '@jest/types';
+import type {Circus} from '@jest/types';
 import {RETRY_TIMES} from './types';
 
 import {dispatch, getState} from './state';

packages/jest-circus/src/state.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Circus} from '@jest/types';
+import type {Circus} from '@jest/types';
 import {STATE_SYM} from './types';
 
 import {makeDescribe} from './utils';

packages/jest-circus/src/types.ts

@@ -9,7 +9,7 @@
 // eslint-disable-next-line @typescript-eslint/no-unused-vars
 import expect = require('expect');
 // eslint-disable-next-line @typescript-eslint/no-unused-vars
-import {Circus} from '@jest/types';
+import type {Circus} from '@jest/types';
 
 export const STATE_SYM = (Symbol(
   'JEST_STATE_SYMBOL',

packages/jest-circus/src/utils.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Circus} from '@jest/types';
+import type {Circus} from '@jest/types';
 import {convertDescriptorToString} from 'jest-util';
 import isGeneratorFn from 'is-generator-fn';
 import co from 'co';

packages/jest-cli/src/__tests__/cli/args.test.ts

@@ -6,7 +6,7 @@
  *
  */
 
-import {Config} from '@jest/types';
+import type {Config} from '@jest/types';
 import {constants} from 'jest-config';
 import {check} from '../../cli/args';
 import {buildArgv} from '../../cli';

packages/jest-cli/src/cli/args.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Config} from '@jest/types';
+import type {Config} from '@jest/types';
 import {constants, isJSONString} from 'jest-config';
 import isCI = require('is-ci');
 

packages/jest-cli/src/cli/index.ts

@@ -6,8 +6,8 @@
  */
 
 import * as path from 'path';
-import {Config} from '@jest/types';
-import {AggregatedResult} from '@jest/test-result';
+import type {Config} from '@jest/types';
+import type {AggregatedResult} from '@jest/test-result';
 import {clearLine} from 'jest-util';
 import {validateCLIOptions} from 'jest-validate';
 import {deprecationEntries} from 'jest-config';

packages/jest-cli/src/init/generate_config_file.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Config} from '@jest/types';
+import type {Config} from '@jest/types';
 import {defaults, descriptions} from 'jest-config';
 
 const stringifyOption = (

packages/jest-cli/src/init/index.ts

@@ -15,7 +15,7 @@ import defaultQuestions, {testScriptQuestion} from './questions';
 import {MalformedPackageJsonError, NotFoundPackageJsonError} from './errors';
 import generateConfigFile from './generate_config_file';
 import modifyPackageJson from './modify_package_json';
-import {ProjectPackageJson} from './types';
+import type {ProjectPackageJson} from './types';
 
 const {
   JEST_CONFIG_BASE_NAME,

packages/jest-cli/src/init/modify_package_json.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {ProjectPackageJson} from './types';
+import type {ProjectPackageJson} from './types';
 
 const modifyPackageJson = ({
   projectPackageJson,

packages/jest-cli/src/init/questions.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {PromptObject} from 'prompts';
+import type {PromptObject} from 'prompts';
 
 const defaultQuestions: Array<PromptObject> = [
   {

packages/jest-cli/src/init/types.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Config} from '@jest/types';
+import type {Config} from '@jest/types';
 
 export type ProjectPackageJson = {
   jest?: Partial<Config.InitialOptions>;

packages/jest-config/src/Defaults.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Config} from '@jest/types';
+import type {Config} from '@jest/types';
 import {replacePathSepForRegex} from 'jest-regex-util';
 import {NODE_MODULES} from './constants';
 import getCacheDirectory from './getCacheDirectory';

packages/jest-config/src/Descriptions.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Config} from '@jest/types';
+import type {Config} from '@jest/types';
 
 const descriptions: {[key in keyof Config.InitialOptions]: string} = {
   automock: 'All imported modules in your tests should be mocked automatically',

packages/jest-config/src/ReporterValidationErrors.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {Config} from '@jest/types';
+import type {Config} from '@jest/types';
 import {ValidationError} from 'jest-validate';
 import chalk = require('chalk');
 import getType = require('jest-get-type');