/* eslint-env node */
const path = require("path");

/** @type {import('jest').Config} */
module.exports = {
  // Match all .spec.ts files, but not .play.spec.ts files, those are playwright tests
  testMatch: ["**/+(*.)+(spec).+(ts|js|mjs|cjs)"],
  testPathIgnorePatterns: [
    "/node_modules/", // default value
    "\\.type\\.spec\\.ts", // ignore type tests (which are checked at compile time and not run by jest)
    "\\.play\\.spec\\.ts", // ignore playwright tests
  ],

  // Workaround for a memory leak that crashes tests in CI:
  // https://github.com/facebook/jest/issues/9430#issuecomment-1149882002
  // Also anecdotally improves performance when run locally
  maxWorkers: 3,

  setupFiles: [path.join(__dirname, "polyfill-node-globals.ts")],

  transform: {
    "^.+\\.tsx?$": [
      "ts-jest",
      {
        // Jest does not use tsconfig.spec.json by default
        tsconfig: "<rootDir>/tsconfig.spec.json",
        // Further workaround for memory leak, recommended here:
        // https://github.com/kulshekhar/ts-jest/issues/1967#issuecomment-697494014
        // Makes tests run faster and reduces size/rate of leak, but loses typechecking on test code
        // See https://bitwarden.atlassian.net/browse/EC-497 for more info
        isolatedModules: true,
      },
    ],
  },
};