jest.config.ts

/**
 * For a detailed explanation regarding each configuration property, visit:
 * https://jestjs.io/docs/configuration
 */

import type { Config } from 'jest'

const config: Config = {
  preset: 'ts-jest',

  // 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: false,

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

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

  // An array of regexp pattern strings used to skip coverage collection
  coveragePathIgnorePatterns: ['/node_modules/', '/coverage/', '/dist/', '/src/index\\.ts'],

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

  // 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: 100,
      functions: 100,
      lines: 100,
      statements: 100,
    },
  },

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

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

  // 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: {
    '^@/(.*)$': '<rootDir>/src/$1',
    '^@test:(.*)$': '<rootDir>/test/$1',
  },
}

export default config