Replace ts-jest with Sucrase Jest plugin

.changeset/lovely-cobras-give.md

@@ -5,5 +5,5 @@
 Upgrade build tools to their latest versions. This doesn't introduce breaking changes to the artifacts built using `@jspsych/config`, but it requires some minor changes to projects using `@jspsych/config`:
 
 - The minimum required Node.js version is now 16.10.0
-- Jest has been upgraded from v28 to v29. If you are facing any issues due to this, please check Jest's [upgrade guide](https://jestjs.io/docs/upgrading-to-jest29) for instructions on updating your tests.
+- Jest has been upgraded from v28 to v29 and ts-jest has been replaced with the more performant Sucrase Jest plugin to avoid significant memory leaks. As a consequence, Jest does no longer type-check code. If you are facing any issues, please check Jest's [upgrade guide](https://jestjs.io/docs/upgrading-to-jest29) for instructions on updating your tests.
 - TypeScript has been upgraded from version 4 to version 5. This is very unlikely to break anything in your code though.

package.json

@@ -27,14 +27,14 @@
   "devDependencies": {
     "@changesets/changelog-github": "^0.4.4",
     "@changesets/cli": "^2.22.0",
+    "alias-hq": "github:bjoluc/alias-hq#tsconfig-parsing-quickfix",
     "husky": "^8.0.1",
     "import-sort-style-module": "^6.0.0",
+    "jest": "*",
     "lint-staged": "^12.4.1",
     "prettier": "^2.6.2",
     "prettier-plugin-import-sort": "^0.0.7",
-    "turbo": "^1.2.9",
-    "jest": "*",
-    "ts-jest": "*"
+    "turbo": "^1.2.9"
   },
   "prettier": {
     "printWidth": 100

packages/config/jest.cjs

@@ -1,21 +1,13 @@
-const ts = require("typescript");
-const { pathsToModuleNameMapper } = require("ts-jest");
+const hq = require("alias-hq");
 
 /** @type { (dirname: string) => import('@jest/types').Config.InitialOptions } */
 module.exports.makePackageConfig = (dirname) => {
   const packageJson = require(dirname + "/package.json");
   const packageBaseName = packageJson.name.replace("@jspsych/", "");
 
-  // based on https://github.com/formium/tsdx/blob/462af2d002987f985695b98400e0344b8f2754b7/src/createRollupConfig.ts#L51-L57
-  const tsCompilerOptions = ts.parseJsonConfigFileContent(
-    ts.readConfigFile(dirname + "/tsconfig.json", ts.sys.readFile).config,
-    ts.sys,
-    dirname
-  ).options;
-
   return {
-    preset: "ts-jest",
-    moduleNameMapper: pathsToModuleNameMapper(tsCompilerOptions.paths, { prefix: "<rootDir>/" }),
+    transform: { "\\.(js|jsx|ts|tsx)$": "@sucrase/jest-plugin" },
+    moduleNameMapper: hq.load(dirname + "/tsconfig.json").get("jest"),
     testEnvironment: "jsdom",
     testEnvironmentOptions: {
       fetchExternalResources: true,

packages/config/package.json

@@ -48,8 +48,10 @@
     "@rollup/plugin-node-resolve": "15.2.1",
     "@rollup/plugin-replace": "5.0.2",
     "@rollup/plugin-terser": "0.4.3",
+    "@sucrase/jest-plugin": "3.0.0",
     "@types/gulp": "4.0.13",
     "@types/jest": "29.5.4",
+    "alias-hq": "github:bjoluc/alias-hq#tsconfig-parsing-quickfix",
     "babel-preset-minify": "0.5.2",
     "canvas": "2.11.2",
     "gulp": "4.0.2",
@@ -64,7 +66,7 @@
     "regenerator-runtime": "0.14.0",
     "rollup": "3.28.1",
     "rollup-plugin-typescript2": "0.35.0",
-    "ts-jest": "29.1.1",
+    "sucrase": "3.34.0",
     "tslib": "2.6.2",
     "typescript": "^5.2.2"
   }