Prerequisites

• I have read the Contributing Guidelines.
• I agree to follow the Code of Conduct.
• I have searched for existing issues that already report this problem, without success.

Stencil Version

3.0.1

Current Behavior

While prerendering and hydration, stencil raises an error about an undefined __DEV__ variable. This seems to be related to @apollo/client. Being able to define the variable in prerendering config would solve the issue.

[19:35.9] prerendering started ...
[19:36.8] prerendering failed in 822 ms

[ ERROR ] Hydrate Error
ReferenceError: __DEV__ is not defined at checkDEV
(/Users/nico_fl/Development/_trials/stencil-prerender-notfoundvars/dist/hydrate/index.js:28002:5) at
hydrateAppClosure

Expected Behavior

Being able to define missing variable somewhere within app or config.
Defining var in app.ts does not work (variable is renamed with a $1 ending), index.js hydrated app:

const __DEV__$1 = false; console.log('__DEV__', __DEV__$1);

System Info

Mac OS Ventura
@apollo/client@3.7.8
@stencil/core@3.0.1

Steps to Reproduce

stencil build --prerender

Code Reproduction URL

https://github.com/cptflammin/stencil-prerender-notfoundvars

Additional Information

`npm run build

s3@0.0.1 build
stencil build --prerender

[20:57.8] @stencil/core
[20:58.1] v3.0.1 🍒
[21:00.9] build, app, prod mode, started ...
[21:01.0] transpile started ...
[21:04.4] transpile finished in 3.36 s
[21:04.4] copy started ...
[21:04.4] generate hydrate app started ...
[21:04.4] generate lazy + source maps started ...
[21:06.6] copy finished (1338 files) in 2.23 s
[21:23.1] generate hydrate app finished in 18.78 s
[21:26.3] generate lazy + source maps finished in 21.89 s

[ WARN ] Package Json: package.json
package.json "module" property is required when generating a distribution.

[21:26.4] build finished in 25.51 s

[21:30.7] prerendering started ...
[21:30.9] prerendering failed in 225 ms

[ ERROR ] Hydrate Error
ReferenceError: __DEV__ is not defined at checkDEV
(/home/users/wtf/stencil-prerender-notfoundvars/dist/hydrate/index.js:28002:5) at
hydrateAppClosure
(/home/users/wtf/stencil-prerender-notfoundvars/dist/hydrate/index.js:28005:1) at
hydrateFactory
(/home/users/wtf/stencil-prerender-notfoundvars/dist/hydrate/index.js:53398:3) at render
(/home/users/wtf/stencil-prerender-notfoundvars/dist/hydrate/index.js:53665:9) at
/home/users/wtf/stencil-prerender-notfoundvars/dist/hydrate/index.js:53597:62 at new
Promise () at Object.hydrateDocument
(/home/users/wtf/stencil-prerender-notfoundvars/dist/hydrate/index.js:53589:33) at
prerenderWorker
(/home/users/wtf/stencil-prerender-notfoundvars/node_modules/@stencil/core/compiler/stencil.js:11047:46)
at prerenderWorker
(/home/users/wtf/stencil-prerender-notfoundvars/node_modules/@stencil/core/compiler/stencil.js:13259:42)
at
/home/users/wtf/stencil-prerender-notfoundvars/node_modules/@stencil/core/compiler/stencil.js:13268:14`