wdio-ui5-service@3.0.10 cannot be loaded via require() in a CommonJS project.

[mccmrunal]

Describe the bug

wdio-ui5-service@3.0.10 cannot be loaded via require() in a CommonJS project. The package's root package.json declares "type": "module", but the CommonJS build shipped in dist/cjs/ has no dist/cjs/package.json marker. Node therefore parses the CommonJS output (dist/cjs/index.js) as an ES module and throws on first load:

ReferenceError: exports is not defined in ES module scope

Because both main and the require export condition point at dist/cjs/index.js, any CommonJS consumer — including a standard wdio.conf.js that does const { default } = require("wdio-ui5-service") — crashes at load time, before any test runs.

To Reproduce

Minimal, isolated reproduction (no UI5 app or wdio config required):

1. mkdir wdi5-repro && cd wdi5-repro
2. npm init -y
3. npm install wdio-ui5-service@3.0.10
4. node -e "require('wdio-ui5-service')"
5. See error

Expected behavior

require("wdio-ui5-service") resolves and returns the service export (as it does once a dist/cjs/package.json containing {"type":"commonjs"} is present). ESM import already works — only the CommonJS entry is broken.

Logs/Console Output

$> node -e "require('wdio-ui5-service')"
.../node_modules/wdio-ui5-service/dist/cjs/index.js:19
Object.defineProperty(exports, "__esModule", { value: true });
                      ^

ReferenceError: exports is not defined in ES module scope
This file is being treated as an ES module because it has a '.js' file extension
and '.../node_modules/wdio-ui5-service/package.json' contains "type": "module".
To treat it as a CommonJS script, rename it to use the '.cjs' file extension.
    at .../node_modules/wdio-ui5-service/dist/cjs/index.js:19:23
    at ModuleJobSync.runSync (node:internal/modules/esm/module_job:541:37)
    at ModuleLoader.importSyncForRequire (node:internal/modules/esm/loader:366:47)

Screenshots

n/a — crashes at module load, before a browser starts.

Runtime Env (please complete the following information):

• wdi5/wdio-ui5-service-version: 3.0.10
• UI5 version: n/a — fails before any UI5 is loaded (occurs on a bare npm install, no app)
• wdio-version (output of wdio --version): 9.29.1
• node-version (output of node --version): v24.15.0
• OS: Windows 11 (also reproducible on any OS — packaging-only)
• Browser + Version: n/a — fails before browser launch

Additional context

Root cause: the require export condition and main both resolve to dist/cjs/index.js, but with "type": "module" at the package root and no dist/cjs/package.json, Node treats that CommonJS output as ESM.

Suggested fix: emit dist/cjs/package.json = {"type":"commonjs"} (and, for symmetry, dist/esm/package.json = {"type":"module"}) as part of the build. Verified locally that adding a post-build step after the _build:cjs / _build:esm tsc runs makes require() succeed while keeping import working. Happy to open a PR.

Reproducible on both a bare install and in a real CommonJS wdio.conf.js project. Not browser- or --headless-dependent, and independent of the wdio version — the failure is purely at package load.