jest.config.js
// "package.json:jest" config cannot be used alongside this config, all Jest config must be centralised in this file - See https://github.com/facebook/jest/issues/10123#issuecomment-638796267
module.exports = {
preset: 'ts-jest',
testEnvironment: 'node',
globals: {
// XXX we must specify a custom tsconfig for tests because we need the typescript transform
// to transform jsx into js rather than leaving it jsx such as the next build requires. you
// can see this setting in tsconfig.jest.json -> "jsx": "react"
// See https://github.com/vercel/next.js/issues/8663
'ts-jest': {
tsconfig: 'tsconfig.jest.json',
},
},
modulePathIgnorePatterns: [
'.next/',
'cypress',
],
runner: 'groups', // Allow to use jest-runner-groups - See https://github.com/eugene-manuilov/jest-runner-groups#update-jest-config
setupFilesAfterEnv: [
'jest-extended', // Extends native "expect" abilities - See https://github.com/jest-community/jest-extended
'jest-expect-message', // Allows to add additional message when test fails - See https://github.com/mattphillips/jest-expect-message
'./jest.setup.js',
'./jest.extends.ts',
],
};