Error while Jest setup for Snapshots in " if (error?.stack) "

Question

I'm going to create snapshot test, but got problems in the beginning.

I got such error while running test:

    /Users/illia/WebstormProjects/TESTS/node_modules/jest/node_modules/jest-cli/build/cli/index.js:161
    if (error?.stack) {
              ^
SyntaxError: Unexpected token '.'

In the test file I have no errors

import renderer from 'react-test-renderer';

import PaymentDisclaimer from './PaymentDisclaimer';

    it('renders correctly when all default props', () => {
        const tree = renderer.create(<PaymentDisclaimer fullPrice={9} />).toJSON();
        expect(tree).toMatchSnapshot();
    });

Packages:

"react-test-renderer": "^18.2.0",
"jest": "^29.0.3",
"ts-jest": "^29.0.1", (was installed as possible solution)

Jest 29 requires Node 14+: jestjs.io/blog/2022/08/25/jest-29, node.green/#ES2020-features-optional-chaining-operator----- — jonrsharpe
– jonrsharpe, Commented Sep 14, 2022 at 12:21
You may also check out the Jest pull request "chore: drop node 12 and 17" where support was removed. See github.com/jestjs/jest/pull/13033 — J-Christophe
– J-Christophe, Commented Aug 13, 2023 at 4:52

Muhammed Moussa · Accepted Answer · 2023-08-16 09:39:40Z

23

This happens when jest is running under the node version that do not read the new updates from JS. You need to run it in node 14 or higher.

Specifically, the ?. in if (error?.stack) is an optional chaining operator which is only supported in versions 14 or higher.

You can switch Node version using nvm:

$ nvm use 14 
Now using node v14.18.0 (npm v6.14.15)

check Node Version Manager (nvm)

edited Aug 16, 2023 at 9:39

Muhammed Moussa

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answered Nov 24, 2022 at 12:50

gmBarroso

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2 Comments

Adison Masih Over a year ago

Your answer could be improved with additional supporting information. Please edit to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers in the help center.

vinaut Over a year ago

I had the same error and I was running an old version of NodeJS installed with apt on Ubuntu 22.04. Uninstalling the old version and Installing one of the latest supported ones, as described in the main NodeJS website, solved the issue.

Node Programmer · Accepted Answer · 2023-02-14 08:23:36Z

0

I don't know why but in my case I was using nvm and I tried different versions one by one finally on node v14.12.0 the error disappeared.

answered Feb 14, 2023 at 8:23

Node Programmer

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