Could not resolve entry (C:\Users\bhawin.parkeria\Music\datepicker\build/index.js) Starting 'rollup:fesm'

[bhawin-boom]

Hi ,

I am getting this error when i am using npm run build .

15:42:44] Finished 'copy:source' after 138 ms
[15:42:44] Starting 'inline-resources'...
[15:42:44] Finished 'inline-resources' after 37 ms
[15:42:44] Starting 'ngc'...
: Error: C:/Users/bhawin.parkeria/Music/datepicker/.tmp/bp-datepicker/bp-datepicker.constants.ts:1:1: Error encountered in metadata generated for exported symbol 'BpDatePickerConstants':
 C:/Users/bhawin.parkeria/Music/datepicker/.tmp/bp-datepicker/bp-datepicker.constants.ts:3:7: Metadata collected contains an error that will be reported at runtime: Name expected.
  {"__symbolic":"error","message":"Name expected","line":2,"character":6,"context":{"received":"0"}}
    at C:\Users\bhawin.parkeria\Music\datepicker\node_modules\@angular\compiler-cli\src\metadata\collector.js:664:27
    at Array.forEach (<anonymous>)
    at validateMetadata (C:\Users\bhawin.parkeria\Music\datepicker\node_modules\@angular\compiler-cli\src\metadata\collector.js:652:42)
    at MetadataCollector.getMetadata (C:\Users\bhawin.parkeria\Music\datepicker\node_modules\@angular\compiler-cli\src\metadata\collector.js:507:17)
    at LowerMetadataCache.getMetadataAndRequests (C:\Users\bhawin.parkeria\Music\datepicker\node_modules\@angular\compiler-cli\src\transformers\lower_expressions.js:264:39)
    at LowerMetadataCache.ensureMetadataAndRequests (C:\Users\bhawin.parkeria\Music\datepicker\node_modules\@angular\compiler-cli\src\transformers\lower_expressions.js:209:27)
    at LowerMetadataCache.getRequests (C:\Users\bhawin.parkeria\Music\datepicker\node_modules\@angular\compiler-cli\src\transformers\lower_expressions.js:204:21)
    at C:\Users\bhawin.parkeria\Music\datepicker\node_modules\@angular\compiler-cli\src\transformers\lower_expressions.js:146:36
    at C:\Users\bhawin.parkeria\Music\datepicker\node_modules\typescript\lib\typescript.js:2492:86
    at reduceLeft (C:\Users\bhawin.parkeria\Music\datepicker\node_modules\typescript\lib\typescript.js:2188:30)

[15:42:47] Finished 'ngc' after 3.11 s
[15:42:47] Starting 'rollup:fesm'...

events.js:183
      throw er; // Unhandled 'error' event
      ^
Error: Could not resolve entry (C:\Users\bhawin.parkeria\Music\datepicker\build/index.js)
    at error (C:\Users\bhawin.parkeria\Music\datepicker\node_modules\gulp-rollup\node_modules\rollup\dist\rollup.js:170:15)
    at C:\Users\bhawin.parkeria\Music\datepicker\node_modules\gulp-rollup\node_modules\rollup\dist\rollup.js:18569:17
    at <anonymous>
    at process._tickCallback (internal/process/next_tick.js:188:7)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] build: `gulp build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\bhawin.parkeria\AppData\Roaming\npm-cache\_logs\2018-11-25T10_12_48_088Z-debug.log