Switched from ts-jest to @swc/jest

project/.swcrc

@@ -12,12 +12,14 @@
         "target": "es2022",
         "loose": true,
         "externalHelpers": false,
-        // Requires v1.2.50 or upper and requires target to be es2016 or upper.
         "keepClassNames": true,
         "baseUrl": "./",
         "paths": {
             "@spt-aki/*": [
                 "src/*"
+            ],
+            "@tests/*": [
+                "tests/*"
             ]
         }
     },

project/jest.config.ts

@@ -1,15 +1,15 @@
-import type { JestConfigWithTsJest } from "ts-jest";
-import { pathsToModuleNameMapper } from "ts-jest";
-import { compilerOptions } from "./tsconfig.json";
+/* eslint-disable @typescript-eslint/naming-convention */
+import type { Config } from "jest";
+import fs from "fs";
 
-const config: JestConfigWithTsJest = {
-    preset: "ts-jest",
+const config: Config = {
     testEnvironment: "./tests/CustomEnvironment.ts",
     roots: [
         "./tests/"
     ],
-    modulePaths: [ compilerOptions.baseUrl ],
-    moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths)
+    transform: {
+        "^.+\\.ts$": [ "@swc/jest", JSON.parse(fs.readFileSync(`${__dirname}/.swcrc`, "utf-8")) ]
+    }
 };
 
 export default config;

project/package.json

@@ -44,6 +44,7 @@
     "devDependencies": {
         "@babel/preset-env": "7.23.2",
         "@babel/preset-typescript": "7.23.2",
+        "@jest/environment": "^29.7.0",
         "@jest/globals": "29.7.0",
         "@pnpm/exe": "8.9.0",
         "@swc/cli": "0.1.62",
@@ -63,12 +64,12 @@
         "gulp-execa": "5.0.1",
         "gulp-rename": "2.0.0",
         "jest": "29.7.0",
+        "jest-environment-node": "^29.7.0",
         "madge": "6.1.0",
         "pkg": "5.8.1",
         "pkg-fetch": "3.5.2",
         "resedit": "2.0.0",
         "rome": "12.1.3",
-        "ts-jest": "29.1.1",
         "ts-node-dev": "2.0.0",
         "tsconfig-paths": "4.2.0",
         "typedoc": "0.25.2",

project/tests/CustomEnvironment.ts

@@ -1,13 +1,12 @@
 import "reflect-metadata";
+import { container } from "tsyringe";
 
 import NodeEnvironment from "jest-environment-node";
-import type {EnvironmentContext} from "@jest/environment";
-import type {JestEnvironmentConfig} from "@jest/environment";
+import type { EnvironmentContext, JestEnvironmentConfig } from "@jest/environment";
 
-import { container } from "tsyringe";
 import { Container } from "@spt-aki/di/Container";
 
-class CustomEnvironment extends NodeEnvironment
+export default class CustomEnvironment extends NodeEnvironment
 {
     constructor(config: JestEnvironmentConfig, context: EnvironmentContext)
     {
@@ -27,5 +26,3 @@ class CustomEnvironment extends NodeEnvironment
         await super.teardown();
     }
 }
-
-module.exports = CustomEnvironment;