jest.config.ts

/*
 * For a detailed explanation regarding each configuration property and type check, visit:
 * https://jestjs.io/docs/configuration
 */
import type { Config } from 'jest';

declare const process: { env: Record<string, string> };

export default {
	// A preset that is used as a base for Jest's configuration
	// preset: 'ts-jest',

	// All imported modules in your tests should be mocked automatically
	// automock: false,

	// Stop running tests after `n` failures
	// bail: 0,

	// The directory where Jest should store its cached dependency information
	// cacheDirectory: "/tmp/jest_rs",

	// Automatically clear mock calls, instances, contexts and results before every test
	clearMocks: true,

	// Indicates whether the coverage information should be collected while executing the test
	collectCoverage: process.env.DECORATOR_TYPE === 'tc39',

	// An array of glob patterns indicating a set of files for which coverage information should be collected
	collectCoverageFrom: ['src/**/*.ts'],

	// The directory where Jest should output its coverage files
	coverageDirectory: 'reports/coverage',

	// An array of regexp pattern strings used to skip coverage collection
	coveragePathIgnorePatterns: [
		'/node_modules/',
		'/src/index.ts',
		'/src/demo/',
		'/src/interfaces/',
		'/src/models/',
		'/__utils__/',
		'/examples/',
	],

	// Indicates which provider should be used to instrument code for coverage
	coverageProvider: 'v8',

	// A list of reporter names that Jest uses when writing coverage reports
	coverageReporters: ['json', 'text', 'lcov', 'clover'],

	// An object that configures minimum threshold enforcement for coverage results
	coverageThreshold: {
		global: { branches: 95, functions: 95, lines: 95, statements: 95 },
	},

	// A path to a custom dependency extractor
	// dependencyExtractor: undefined,

	// Make calling deprecated APIs throw helpful error messages
	// errorOnDeprecated: false,

	// The default configuration for fake timers
	// fakeTimers: {
	//   "enableGlobally": false
	// },

	// Force coverage collection from ignored files using an array of glob patterns
	// forceCoverageMatch: [],

	// A path to a module which exports an async function that is triggered once before all test suites
	// globalSetup: undefined,

	// A path to a module which exports an async function that is triggered once after all test suites
	// globalTeardown: undefined,

	// A set of global variables that need to be available in all test environments
	// globals: {},

	// The maximum amount of workers used to run your tests. Can be specified as % or a number. E.g. maxWorkers: 10% will use 10% of your CPU amount + 1 as the maximum worker number. maxWorkers: 2 will use a maximum of 2 workers.
	// maxWorkers: "50%",

	// An array of directory names to be searched recursively up from the requiring module's location
	// moduleDirectories: [
	//   "node_modules"
	// ],

	// An array of file extensions your modules use
	// moduleFileExtensions: [
	//   "js",
	//   "mjs",
	//   "cjs",
	//   "jsx",
	//   "ts",
	//   "tsx",
	//   "json",
	//   "node"
	// ],

	// A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
	moduleNameMapper: {
		'^(\\.{1,2}/.*)\\.js$': '$1',
	},

	// An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
	// modulePathIgnorePatterns: [],

	// Activates notifications for test results
	// notify: false,

	// An enum that specifies notification mode. Requires { notify: true }
	// notifyMode: "failure-change",

  // Use an explicit null path to prettier to disable it.
  prettierPath: null,

	// Run tests from one or more projects
	// projects: undefined,

	// Use this configuration option to add custom reporters to Jest
	// reporters: undefined,

	// Automatically reset mock state before every test
	resetMocks: true,

	// Reset the module registry before running each individual test
	// resetModules: false,

	// A path to a custom resolver
	// resolver: undefined,

	// Automatically restore mock state and implementation before every test
	// restoreMocks: false,

	// The root directory that Jest should scan for tests and modules within
	// rootDir: undefined,

	// A list of paths to directories that Jest should use to search for files in
	// roots: [
	//   "<rootDir>"
	// ],

	// Allows you to use a custom runner instead of Jest's default test runner
	// runner: "jest-runner",

	// The paths to modules that run some code to configure or set up the testing environment before each test
	// setupFiles: [],

	// A list of paths to modules that run some code to configure or set up the testing framework before each test
	// setupFilesAfterEnv: [],

	// The number of seconds after which a test is considered as slow and reported as such in the results.
	// slowTestThreshold: 5,

	// A list of paths to snapshot serializer modules Jest should use for snapshot testing
	// snapshotSerializers: [],

	// The test environment that will be used for testing
	testEnvironment: 'node',

	// Options that will be passed to the testEnvironment
	// testEnvironmentOptions: {},

	// Adds a location field to test results
	// testLocationInResults: false,

	// The glob patterns Jest uses to detect test files
	// testMatch: [
	//   "**/__tests__/**/*.[jt]s?(x)",
	//   "**/?(*.)+(spec|test).[tj]s?(x)"
	// ],

	// An array of regexp pattern strings that are matched against all test paths, matched tests are skipped
	testPathIgnorePatterns: ['/node_modules/', '/dist/', '/__utils__/', '/examples/'],

	// The regexp pattern or array of patterns that Jest uses to detect test files
	// testRegex: [],

	// This option allows the use of a custom results processor
	// testResultsProcessor: undefined,

	// This option allows use of a custom test runner
	// testRunner: "jest-circus/runner",

	// A map from regular expressions to paths to transformers
	transform: {
		'^.+\\.m?[tj]sx?$': [
			'@swc/jest',
			{
				"$schema": "https://swc.rs/schema.json",
				jsc: {
					parser: {
						syntax: "typescript",
						decorators: true,
					},
					target: "es2022",
					transform: {
						decoratorVersion: process.env.DECORATOR_TYPE === 'tc39' ? '2022-03' : '2021-12',
					},
					experimental: {
						keepImportAssertions: true
					}
				}
			},
		],
	},

	// Extensions that Jest should treat as ESM modules
	extensionsToTreatAsEsm: ['.ts'],

	// An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
	// transformIgnorePatterns: [
	//   "/node_modules/",
	//   "\\.pnp\\.[^\\/]+$"
	// ],

	// An array of regexp pattern strings that are matched against all modules before the module loader will automatically return a mock for them
	// unmockedModulePathPatterns: undefined,

	// Indicates whether each individual test should be reported during the run
	// verbose: undefined,

	// An array of regexp patterns that are matched against all source file paths before re-running tests in watch mode
	// watchPathIgnorePatterns: [],

	// Whether to use watchman for file crawling
	// watchman: true,
} satisfies Config;