apple2js/jest.config.js

module.exports = {
    moduleNameMapper: {
        '^js/(.*)': '<rootDir>/js/$1',
        '^test/(.*)': '<rootDir>/test/$1',
        '\\.css$': 'identity-obj-proxy',
        '\\.scss$': 'identity-obj-proxy',
        // For some reason the preact modules are not where they are
        // expected. This seems to have something to do with jest > v27.
        // https://github.com/preactjs/enzyme-adapter-preact-pure/issues/179#issuecomment-1201096897
        '^preact(/(.*)|$)': 'preact$1',
    },
    roots: ['js/', 'test/'],
    testMatch: ['**/?(*.)+(spec|test).+(ts|js|tsx)'],
    transform: {
        '^.+\\.js$': 'babel-jest',
        '^.+\\.ts$': 'ts-jest',
        '^.*\\.tsx$': 'ts-jest',
    },
    transformIgnorePatterns: [
        '/node_modules/(?!(@testing-library/preact/dist/esm)/)',
    ],
    setupFilesAfterEnv: ['<rootDir>/test/jest-setup.ts'],
    coveragePathIgnorePatterns: ['/node_modules/', '/js/roms/', '/test/'],
    preset: 'ts-jest',
};