jest.config.js

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

const { pathsToModuleNameMapper } = require('ts-jest');
const { compilerOptions } = require('./tsconfig');

/** @type {import('jest').Config} */
const config = {
  // Indicates which provider should be used to instrument code for coverage
  coverageProvider: "v8",

  // 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: pathsToModuleNameMapper(
    compilerOptions.paths, {
      prefix: '<rootDir>/'
    }
  ),

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

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

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

  // An array of regexp pattern strings that are matched against all test paths, matched tests are skipped
  testPathIgnorePatterns: [
    "\\\\node_modules\\\\"
  ],

  // A map from regular expressions to paths to transformers
  transform: {
    "^.+\\.(ts|tsx)$": "ts-jest"
  },
};

module.exports = config;