[Bug]: SyntaxError: Unexpected token ':' at Runtime.loadEsmModule (node_modules/jest-runtime/build/index.js:516:20)

[asimplify]

Version

^29.7.0

Steps to reproduce

Can't share a repo because of confidential reasons.

Expected behavior

I expected that test will run.

Actual behavior

ReferenceError: You are trying to import a file after the Jest environment has been torn down. From test/api/agents/index.test.ts.

ReferenceError: You are trying to import a file after the Jest environment has been torn down. From test/api/agents/index.test.ts.

FAIL test/api/agents/index.test.ts
● Test suite failed to run

SyntaxError: Unexpected token ':'

  at Runtime.loadEsmModule (node_modules/jest-runtime/build/index.js:516:20)

Test Suites: 1 failed, 1 total
Tests: 0 total
Snapshots: 0 total
Time: 1.668 s
Ran all test suites.
(node:6932) ExperimentalWarning: VM Modules is an experimental feature and might change at any time
(Use node --trace-warnings ... to show where the warning was created)

Additional context

import { NextApiResponse } from "next";
import { createMocks } from "node-mocks-http";
import { AppNextApiRequest } from "@app/types";
import { getAgents } from "@app/pages/api/agents";
import { respond } from "@app/utils/createa-api-handler";
import { expect, describe, it, jest } from "@jest/globals";

const session = {...}

describe("/api/agents", () => {
  it("should get the list of agents.", async () => {
    const { req, res } = createMocks<AppNextApiRequest, NextApiResponse>({
      session,
      method: "GET",
      headers: {
        "Content-Type": "application/json",
      },
    });
    await respond(getAgents)(req, res);

    expect(res._getStatusCode).toBe(200);
  }, 6000);
});

jest.config.ts

import type { Config } from "jest";
import nextJest from "next/jest";

const createJestConfig = nextJest({
  dir: "./",
});

const config: Config = {
  verbose: true,
  preset: "ts-jest",
  coverageProvider: "v8",
  testEnvironment: "node",
  moduleDirectories: ["node_modules", "<rootDir>"],
  testPathIgnorePatterns: ["/node_modules/", "/.next/", "/packages/"],
  fakeTimers: {
    enableGlobally: true,
  },
  transform: {
    "^.+\\.(ts|tsx)$": [
      "ts-jest",
      {
        useESM: true,
        isolatedModules: true,
      },
    ],
  },
  extensionsToTreatAsEsm: [".ts", ".tsx"],
  transformIgnorePatterns: ["/emailer/"],
  moduleNameMapper: {
    "^@app/(.*)$": "<rootDir>/$1",
  },
};

export default createJestConfig(config);

Environment

System:
    OS: Windows 10 10.0.19045
    CPU: (8) x64 Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz
  Binaries:
    Node: 18.19.1 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.19 - ~\AppData\Roaming\npm\yarn.CMD
    npm: 9.4.1 - C:\Program Files\nodejs\npm.CMD
    pnpm: 8.15.4 - ~\AppData\Roaming\npm\pnpm.CMD
  npmPackages:
    jest: ^29.7.0 => 29.7.0

[muhammadfaizan027915]

Facing the same issue here.
https://stackoverflow.com/questions/78972982/error-in-jest-syntaxerror-unexpected-token-at-runtime-loadesmmodule-node

[maxbisesi]

Hope this helps. I had the exact same issue only it was:

SyntaxError: Unexpected token ';'
at Runtime.loadEsmModule (node_modules/jest-runtime/build/index.js:516:20)

Semi colon instead of a colon. Right before that I was working on another issue and I had changed:

"jest": {
    "transform": {
      "\\.[jt]sx?$": "babel-jest"
    }
  }

to

"jest": {
    "transform": {}
  }

.. though I'm not sure why I did that. I put it back to have babel-jest and ran it again. That error above went away and instead I got a long stack-trace:

SyntaxError: /Users/bisesma/kingfishers-auto/ReduxStore.test.js: Unexpected token, expected "," (32:51)
      30 |         soap: {
      31 |             metadata: {
    > 32 |                 list: jest.fn((q,v) => mocks.at(0));
         |                                                    ^
      33 |             }
      34 |         },
      35 |         restRoot: `none`

      at constructor (node_modules/@babel/parser/src/parse-error.ts:95:45)
      at Parser.toParseError [as raise] (node_modules/@babel/parser/src/tokenizer/index.ts:1496:19)
      at Parser.raise [as unexpected] (node_modules/@babel/parser/src/tokenizer/index.ts:1536:16)
      at Parser.unexpected [as expect] (node_modules/@babel/parser/src/parser/util.ts:157:12)
      at Parser.expect [as parseObjectLike] (node_modules/@babel/parser/src/parser/expression.ts:2066:14)
      at Parser.parseObjectLike [as parseExprAtom] (node_modules/@babel/parser/src/parser/expression.ts:1190:21)
      at Parser.parseExprAtom [as parseExprSubscripts] (node_modules/@babel/parser/src/parser/expression.ts:706:23)
      at Parser.parseExprSubscripts [as parseUpdate] (node_modules/@babel/parser/src/parser/expression.ts:685:21)
      at Parser.parseUpdate [as parseMaybeUnary] (node_modules/@babel/parser/src/parser/expression.ts:647:23)
      at Parser.parseMaybeUnary [as parseMaybeUnaryOrPrivate] (node_modules/@babel/parser/src/parser/expression.ts:388:14)
      at Parser.parseMaybeUnaryOrPrivate [as parseExprOps] (node_modules/@babel/parser/src/parser/expression.ts:400:23)
      at Parser.parseExprOps [as parseMaybeConditional] (node_modules/@babel/parser/src/parser/expression.ts:355:23)
      at Parser.parseMaybeConditional [as parseMaybeAssign] (node_modules/@babel/parser/src/parser/expression.ts:297:21)
      at parseMaybeAssign (node_modules/@babel/parser/src/parser/expression.ts:251:12)
      at Parser.callback [as allowInAnd] (node_modules/@babel/parser/src/parser/expression.ts:3135:12)
      at Parser.allowInAnd [as parseMaybeAssignAllowIn] (node_modules/@babel/parser/src/parser/expression.ts:250:17)
      at Parser.parseMaybeAssignAllowIn [as parseObjectProperty] (node_modules/@babel/parser/src/parser/expression.ts:2305:16)
      at Parser.parseObjectProperty [as parseObjPropValue] (node_modules/@babel/parser/src/parser/expression.ts:2361:12)
      at Parser.parseObjPropValue [as parsePropertyDefinition] (node_modules/@babel/parser/src/parser/expression.ts:2208:17)
      at Parser.parsePropertyDefinition [as parseObjectLike] (node_modules/@babel/parser/src/parser/expression.ts:2080:21)
      at Parser.parseObjectLike [as parseExprAtom] (node_modules/@babel/parser/src/parser/expression.ts:1190:21)
      at Parser.parseExprAtom [as parseExprSubscripts] (node_modules/@babel/parser/src/parser/expression.ts:706:23)
      at Parser.parseExprSubscripts [as parseUpdate] (node_modules/@babel/parser/src/parser/expression.ts:685:21)
      at Parser.parseUpdate [as parseMaybeUnary] (node_modules/@babel/parser/src/parser/expression.ts:647:23)
      at Parser.parseMaybeUnary [as parseMaybeUnaryOrPrivate] (node_modules/@babel/parser/src/parser/expression.ts:388:14)
      at Parser.parseMaybeUnaryOrPrivate [as parseExprOps] (node_modules/@babel/parser/src/parser/expression.ts:400:23)
      at Parser.parseExprOps [as parseMaybeConditional] (node_modules/@babel/parser/src/parser/expression.ts:355:23)
      at Parser.parseMaybeConditional [as parseMaybeAssign] (node_modules/@babel/parser/src/parser/expression.ts:297:21)
      at parseMaybeAssign (node_modules/@babel/parser/src/parser/expression.ts:251:12)
      at Parser.callback [as allowInAnd] (node_modules/@babel/parser/src/parser/expression.ts:3135:12)
      at Parser.allowInAnd [as parseMaybeAssignAllowIn] (node_modules/@babel/parser/src/parser/expression.ts:250:17)
      at Parser.parseMaybeAssignAllowIn [as parseObjectProperty] (node_modules/@babel/parser/src/parser/expression.ts:2305:16)
      at Parser.parseObjectProperty [as parseObjPropValue] (node_modules/@babel/parser/src/parser/expression.ts:2361:12)
      at Parser.parseObjPropValue [as parsePropertyDefinition] (node_modules/@babel/parser/src/parser/expression.ts:2208:17)
      at Parser.parsePropertyDefinition [as parseObjectLike] (node_modules/@babel/parser/src/parser/expression.ts:2080:21)
      at Parser.parseObjectLike [as parseExprAtom] (node_modules/@babel/parser/src/parser/expression.ts:1190:21)
      at Parser.parseExprAtom [as parseExprSubscripts] (node_modules/@babel/parser/src/parser/expression.ts:706:23)
      at Parser.parseExprSubscripts [as parseUpdate] (node_modules/@babel/parser/src/parser/expression.ts:685:21)
      at Parser.parseUpdate [as parseMaybeUnary] (node_modules/@babel/parser/src/parser/expression.ts:647:23)
      at Parser.parseMaybeUnary [as parseMaybeUnaryOrPrivate] (node_modules/@babel/parser/src/parser/expression.ts:388:14)
      at Parser.parseMaybeUnaryOrPrivate [as parseExprOps] (node_modules/@babel/parser/src/parser/expression.ts:400:23)
      at Parser.parseExprOps [as parseMaybeConditional] (node_modules/@babel/parser/src/parser/expression.ts:355:23)
      at Parser.parseMaybeConditional [as parseMaybeAssign] (node_modules/@babel/parser/src/parser/expression.ts:297:21)
      at Parser.parseMaybeAssign [as parseExpressionBase] (node_modules/@babel/parser/src/parser/expression.ts:220:23)
      at parseExpressionBase (node_modules/@babel/parser/src/parser/expression.ts:211:39)
      at Parser.callback [as allowInAnd] (node_modules/@babel/parser/src/parser/expression.ts:3130:16)
      at Parser.allowInAnd [as parseExpression] (node_modules/@babel/parser/src/parser/expression.ts:211:17)
      at Parser.parseExpression [as parseReturnStatement] (node_modules/@babel/parser/src/parser/statement.ts:1067:28)
      at Parser.parseReturnStatement [as parseStatementContent] (node_modules/@babel/parser/src/parser/statement.ts:487:21)
      at Parser.parseStatementContent [as parseStatementLike] (node_modules/@babel/parser/src/parser/statement.ts:426:17)
      at Parser.parseStatementLike [as parseStatementListItem] (node_modules/@babel/parser/src/parser/statement.ts:375:17)
      at Parser.parseStatementListItem [as parseBlockOrModuleBlockBody] (node_modules/@babel/parser/src/parser/statement.ts:1396:16)
      at Parser.parseBlockOrModuleBlockBody [as parseBlockBody] (node_modules/@babel/parser/src/parser/statement.ts:1369:10)
      at Parser.parseBlockBody [as parseBlock] (node_modules/@babel/parser/src/parser/statement.ts:1337:10)
      at Parser.parseBlock [as parseFunctionBody] (node_modules/@babel/parser/src/parser/expression.ts:2589:24)
      at Parser.parseFunctionBody [as parseFunctionBodyAndFinish] (node_modules/@babel/parser/src/parser/expression.ts:2558:10)
      at parseFunctionBodyAndFinish (node_modules/@babel/parser/src/parser/statement.ts:1643:12)
      at Parser.callback [as withSmartMixTopicForbiddingContext] (node_modules/@babel/parser/src/parser/expression.ts:3109:14)
      at Parser.withSmartMixTopicForbiddingContext [as parseFunction] (node_modules/@babel/parser/src/parser/statement.ts:1641:10)
      at Parser.parseFunction [as parseFunctionStatement] (node_modules/@babel/parser/src/parser/statement.ts:1032:17)
      at Parser.parseFunctionStatement [as parseStatementContent] (node_modules/@babel/parser/src/parser/statement.ts:469:21)
      at Parser.parseStatementContent [as parseStatementLike] (node_modules/@babel/parser/src/parser/statement.ts:426:17)
      at Parser.parseStatementLike [as parseModuleItem] (node_modules/@babel/parser/src/parser/statement.ts:363:17)
      at Parser.parseModuleItem [as parseBlockOrModuleBlockBody] (node_modules/@babel/parser/src/parser/statement.ts:1395:16)
      at Parser.parseBlockOrModuleBlockBody [as parseBlockBody] (node_modules/@babel/parser/src/parser/statement.ts:1369:10)
      at Parser.parseBlockBody [as parseProgram] (node_modules/@babel/parser/src/parser/statement.ts:217:10)
      at Parser.parseProgram [as parseTopLevel] (node_modules/@babel/parser/src/parser/statement.ts:199:25)
      at Parser.parseTopLevel [as parse] (node_modules/@babel/parser/src/parser/index.ts:46:10)
      at parse (node_modules/@babel/parser/src/index.ts:65:38)
      at parser (node_modules/@babel/core/src/parser/index.ts:28:19)
          at parser.next (<anonymous>)
      at normalizeFile (node_modules/@babel/core/src/transformation/normalize-file.ts:50:24)
          at normalizeFile.next (<anonymous>)
      at run (node_modules/@babel/core/src/transformation/index.ts:39:36)
          at run.next (<anonymous>)
      at transform (node_modules/@babel/core/src/transform.ts:29:20)
          at transform.next (<anonymous>)
      at step (node_modules/gensync/index.js:261:32)
      at node_modules/gensync/index.js:273:13
      at async.call.result.err.err (node_modules/gensync/index.js:223:11)
      at node_modules/gensync/index.js:189:28
      at cb (node_modules/@babel/core/src/gensync-utils/async.ts:90:7)
      at node_modules/gensync/index.js:113:33
      at step (node_modules/gensync/index.js:287:14)
      at node_modules/gensync/index.js:273:13
      at async.call.result.err.err (node_modules/gensync/index.js:223:11)

I removed that semi colon from the end of list: jest.fn((q,v) => mocks.at(0)) and boom, the problem went away.

[muhammadfaizan027915]

@maxbisesi

I think you may added ; at the place of : but In my case I was getting error related to : in jest-runtime/build.

The same code I had run with Vitest it was working with Vitest. I don't know why it wasn't working with Jest.

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[muhammadfaizan027915]

@znarf

What could be way to avoid this error ?

[github-actions]

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