Warning for missing source map files

[der-cain]

Hello,

I'm getting warning when I run npm start like this

 warning  in ./node_modules/@stomp/stompjs/esm6/client.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find source file '../src/client.ts': Error: Can't resolve '../src/client.ts' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

 @ ./node_modules/@stomp/stompjs/esm6/index.js 1:0-25 1:0-25
 @ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
 @ ./src/main/webapp/app/shared/stomp/index.js
 @ ./src/main/webapp/app/app.tsx
 @ ./src/main/webapp/app/gateway.tsx
 @ ./src/main/webapp/app/index.tsx
 @ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

When I look into the source map files I see references to folder ../src/client.ts as mentioned in the warning but they don't seem to be part of the npm distribution. In my node_modules I have only the folders bundles and esm6, the src folder which I see part of the github source seems not to be included when I install stompjs using npm install.

Is there a way to get also the source files included or to remove them from the source map files (i.e. client.js.map)?

Thanks!

[kum-deepak]

Many thanks for pointing it out. It does not make sense to include the sourcemap when the source is not included.

In the next release, the source maps will be removed from the npm package. I think that should resolve the issue.

A note to myself, it needs to be done for rx-stomp and ng2-stompjs as well.

[kum-deepak]

Please try the newly released 6.1.1, it should resolve the issue.

[der-cain]

I have tried it and now I get a similar but different message:

` WARNING Compiled with 15 warnings 08:28:36

warning in ./node_modules/@stomp/stompjs/esm6/augment-websocket.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'augment-websocket.js.map': Error: Can't resolve './augment-websocket.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

@ ./node_modules/@stomp/stompjs/esm6/stomp-handler.js 6:0-55 207:12-28
@ ./node_modules/@stomp/stompjs/esm6/client.js
@ ./node_modules/@stomp/stompjs/esm6/index.js
@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

warning in ./node_modules/@stomp/stompjs/esm6/byte.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'byte.js.map': Error: Can't resolve './byte.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

@ ./node_modules/@stomp/stompjs/esm6/stomp-handler.js 1:0-30 165:41-45
@ ./node_modules/@stomp/stompjs/esm6/client.js
@ ./node_modules/@stomp/stompjs/esm6/index.js
@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

warning in ./node_modules/@stomp/stompjs/esm6/client.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'client.js.map': Error: Can't resolve './client.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

@ ./node_modules/@stomp/stompjs/esm6/index.js 1:0-25 1:0-25
@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

warning in ./node_modules/@stomp/stompjs/esm6/compatibility/compat-client.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'compat-client.js.map': Error: Can't resolve './compat-client.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6/compatibility'

@ ./node_modules/@stomp/stompjs/esm6/index.js 10:0-46 10:0-46
@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

warning in ./node_modules/@stomp/stompjs/esm6/frame-impl.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'frame-impl.js.map': Error: Can't resolve './frame-impl.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

@ ./node_modules/@stomp/stompjs/esm6/index.js 2:0-29 2:0-29
@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

warning in ./node_modules/@stomp/stompjs/esm6/compatibility/heartbeat-info.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'heartbeat-info.js.map': Error: Can't resolve './heartbeat-info.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6/compatibility'

@ ./node_modules/@stomp/stompjs/esm6/compatibility/compat-client.js 2:0-49 27:34-47
@ ./node_modules/@stomp/stompjs/esm6/index.js
@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

warning in ./node_modules/@stomp/stompjs/esm6/index.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'index.js.map': Error: Can't resolve './index.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx 4:0-40 19:28-34
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

warning in ./node_modules/@stomp/stompjs/esm6/parser.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'parser.js.map': Error: Can't resolve './parser.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

@ ./node_modules/@stomp/stompjs/esm6/index.js 3:0-25 3:0-25
@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

warning in ./node_modules/@stomp/stompjs/esm6/stomp-config.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'stomp-config.js.map': Error: Can't resolve './stomp-config.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

@ ./node_modules/@stomp/stompjs/esm6/index.js 4:0-31 4:0-31
@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

warning in ./node_modules/@stomp/stompjs/esm6/stomp-handler.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'stomp-handler.js.map': Error: Can't resolve './stomp-handler.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

@ ./node_modules/@stomp/stompjs/esm6/client.js 10:0-47 212:37-49
@ ./node_modules/@stomp/stompjs/esm6/index.js
@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

warning in ./node_modules/@stomp/stompjs/esm6/stomp-headers.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'stomp-headers.js.map': Error: Can't resolve './stomp-headers.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

@ ./node_modules/@stomp/stompjs/esm6/index.js 5:0-32 5:0-32
@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

warning in ./node_modules/@stomp/stompjs/esm6/stomp-subscription.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'stomp-subscription.js.map': Error: Can't resolve './stomp-subscription.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

@ ./node_modules/@stomp/stompjs/esm6/index.js 6:0-37 6:0-37
@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

warning in ./node_modules/@stomp/stompjs/esm6/compatibility/stomp.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'stomp.js.map': Error: Can't resolve './stomp.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6/compatibility'

@ ./node_modules/@stomp/stompjs/esm6/index.js 11:0-38 11:0-38
@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

warning in ./node_modules/@stomp/stompjs/esm6/types.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'types.js.map': Error: Can't resolve './types.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

@ ./node_modules/@stomp/stompjs/esm6/client.js 11:0-61 95:21-36 150:30-45 171:27-42 179:26-41 246:39-54 250:42-57 306:31-46 307:38-53 310:30-45 316:46-62 324:34-49
@ ./node_modules/@stomp/stompjs/esm6/index.js
@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

warning in ./node_modules/@stomp/stompjs/esm6/versions.js

Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'versions.js.map': Error: Can't resolve './versions.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

@ ./node_modules/@stomp/stompjs/esm6/index.js 8:0-27 8:0-27
@ ./src/main/webapp/app/shared/stomp/components/StompSessionProvider.tsx
@ ./src/main/webapp/app/shared/stomp/index.ts
@ ./src/main/webapp/app/app.tsx
@ ./src/main/webapp/app/gateway.tsx
@ ./src/main/webapp/app/index.tsx
@ multi (webpack)-dev-server/client?http://localhost:9060 (webpack)/hot/dev-server.js ./src/main/webapp/app/index

⚠ ｢wdm｣: 1609 modules

WARNING in ./node_modules/@stomp/stompjs/esm6/augment-websocket.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'augment-websocket.js.map': Error: Can't resolve './augment-websocket.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

WARNING in ./node_modules/@stomp/stompjs/esm6/byte.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'byte.js.map': Error: Can't resolve './byte.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

WARNING in ./node_modules/@stomp/stompjs/esm6/client.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'client.js.map': Error: Can't resolve './client.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

WARNING in ./node_modules/@stomp/stompjs/esm6/compatibility/compat-client.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'compat-client.js.map': Error: Can't resolve './compat-client.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6/compatibility'

WARNING in ./node_modules/@stomp/stompjs/esm6/frame-impl.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'frame-impl.js.map': Error: Can't resolve './frame-impl.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

WARNING in ./node_modules/@stomp/stompjs/esm6/compatibility/heartbeat-info.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'heartbeat-info.js.map': Error: Can't resolve './heartbeat-info.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6/compatibility'

WARNING in ./node_modules/@stomp/stompjs/esm6/index.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'index.js.map': Error: Can't resolve './index.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

WARNING in ./node_modules/@stomp/stompjs/esm6/parser.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'parser.js.map': Error: Can't resolve './parser.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

WARNING in ./node_modules/@stomp/stompjs/esm6/stomp-config.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'stomp-config.js.map': Error: Can't resolve './stomp-config.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

WARNING in ./node_modules/@stomp/stompjs/esm6/stomp-handler.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'stomp-handler.js.map': Error: Can't resolve './stomp-handler.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

WARNING in ./node_modules/@stomp/stompjs/esm6/stomp-headers.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'stomp-headers.js.map': Error: Can't resolve './stomp-headers.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

WARNING in ./node_modules/@stomp/stompjs/esm6/stomp-subscription.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'stomp-subscription.js.map': Error: Can't resolve './stomp-subscription.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

WARNING in ./node_modules/@stomp/stompjs/esm6/compatibility/stomp.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'stomp.js.map': Error: Can't resolve './stomp.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6/compatibility'

WARNING in ./node_modules/@stomp/stompjs/esm6/types.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'types.js.map': Error: Can't resolve './types.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'

WARNING in ./node_modules/@stomp/stompjs/esm6/versions.js
Module Warning (from ./node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'versions.js.map': Error: Can't resolve './versions.js.map' in '/Users/marius/Source/fino-react/node_modules/@stomp/stompjs/esm6'
ℹ ｢wdm｣: Compiled with warnings.
`

Now it's complaining that the SourceMap file is not found.

[kum-deepak]

Thanks for pointing it out, I am reopening this issue.

[kum-deepak]

I have pushed v6.1.2 - this version includes both source-maps and sources. Please check if it resolves the issue.

[kum-deepak]

In v7, the following changes will happen:

• The minified version will not have a source map associated.
• The minified version will be the default entry point.