Hi everyone!
I am currently puzzled in one of my Angular 7 projects that the build for
production ("ng build --prod") fails with a cryptic error while the regular
build still works fine.
The error message sounds like this:
ERROR in : Error: Internal error: unknown identifier []
at Object.importExpr$$1 [as importExpr]
(..my-project\node_modules\@angular\compiler\bundles\compiler.umd.js:22447:27)
at
..my-project\node_modules\@angular\compiler\bundles\compiler.umd.js:10011:37
at Array.map (<anonymous>)
at InjectableCompiler.depsArray
(..my-project\node_modules\@angular\compiler\bundles\compiler.umd.js:9977:25)
at InjectableCompiler.factoryFor
(..my-project\node_modules\@angular\compiler\bundles\compiler.umd.js:10041:36)
at InjectableCompiler.injectableDef
(..my-project\node_modules\@angular\compiler\bundles\compiler.umd.js:10060:42)
at InjectableCompiler.compile
(..my-project\node_modules\@angular\compiler\bundles\compiler.umd.js:10070:106)
at
..my-project\node_modules\@angular\compiler\bundles\compiler.umd.js:22292:90
at Array.forEach (<anonymous>)
at AotCompiler._emitPartialModule2
(..my-project\node_modules\@angular\compiler\bundles\compiler.umd.js:22292:25)
at
..my-project\node_modules\@angular\compiler\bundles\compiler.umd.js:22285:48
at Array.reduce (<anonymous>)
at AotCompiler.emitAllPartialModules2
(..my-project\node_modules\@angular\compiler\bundles\compiler.umd.js:22284:26)
at AngularCompilerProgram._emitRender2
(..my-project\node_modules\@angular\compiler-cli\src\transformers\program.js:337:31)
at AngularCompilerProgram.emit
(..my-project\node_modules\@angular\compiler-cli\src\transformers\program.js:212:22)
at AngularCompilerPlugin._emit
(..my-project\node_modules\@ngtools\webpack\src\angular_compiler_plugin.js:870:49)
As I did not compile for production for a long time I have no clue which
change might have caused the production build to brake.
I already searched the Internet but none of the described possible causes
seems to fit to my project.
I also deleted already the node_modules folder and ran npm install again.
Also running "npm run ng build -- --prod" gived the same error.
Do you have any idea how I could track down the root cause for the error?
This error makes me a little nervous as I just wanted to start a big
project on Angular. But with such cryptic compilation errors I am afraid to
get into a dead end road with the other project one day, too. Because an
Angular project that does not compile for production anymore is dead, isn't
it?
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