CODEWITHSUNDEEP
jestjsts-jest
Yashas
Yashas

Reputation: 999

ts-jest is not transpiling modules imported with Dynamic Imports

I am using dynamic imports in my nodejs code to import some modules. Ex:

const initialize = (await import('./init')).default;
await initialize();

But when i run jest, it throws the following error:

import sequelize from 'sequelize';
^^^^^^

SyntaxError: Cannot use import statement outside a module

I am assuming that ts-jest is not transforming/transpiling the code that is imported dynamically.

My jest.config.js file has:

/** @type {import('ts-jest/dist/types').InitialOptionsTsJest} */
module.exports = {
    preset: 'ts-jest',
    testEnvironment: 'node',
    rootDir: './src/test',
    globalSetup: '../setup/test_setup.ts',
};

Please advice on how to resolve this

Upvotes: 0

Views: 1027

Answers (1)

Yashas
Yashas

Reputation: 999

The error was occurring when the globalSetup code was being run. Not sure if ts-jest doesn't transpile globalSetup code.

To fix the issue, I added this to the top of the test_setup.ts file (which has the globalSetup code):

require('ts-node').register({ transpileOnly: true });

(https://github.com/kulshekhar/ts-jest/issues/411#issuecomment-850944698)

You need to install ts-node for this to work.

Upvotes: 2

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