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"TypeError: Cannot read property 'kind' of undefined" with ng build

See original GitHub issue

Hi!

When running ng build --configuration=production my build crashed and the error pointed on ngx-material-timepicker.js file.

Here is the whole stack

ERROR in ./node_modules/ngx-material-timepicker/fesm2015/ngx-material-timepicker.js
Module build failed (from ./node_modules/@angular-devkit/build-optimizer/src/build-optimizer/webpack-loader.js):
TypeError: Cannot read property 'kind' of undefined
    at isAngularDecoratorMetadataExpression (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:230:35)
    at checkNodeForDecorators (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:53:21)
    at visitNodes (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:16631:30)
    at Object.forEachChild (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:16859:24)
    at transformer (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:39:16)
    at transformSourceFileOrBundle (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:67384:57)
    at transformation (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:83586:24)
    at transformRoot (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:83606:82)
    at Object.map (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:499:29)
    at Object.transformNodes (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:83593:30)
    at emitJsFileOrBundle (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:84089:32)
    at emitSourceFileOrBundle (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:84043:13)
    at forEachEmittedFile (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:83832:34)
    at Object.emitFiles (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:84026:9)
    at emitWorker (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:89951:33)
    at D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:89912:66
    at runWithCancellationToken (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:90002:24)
    at Object.emit (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:89912:20)
    at Object.transformJavascript (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\src\helpers\transform-javascript.js:111:13)
    at Object.buildOptimizer (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\src\build-optimizer\build-optimizer.js:119:35)
    at Object.buildOptimizerLoader (D:\Projects\Tempero\tempero-web\src\tempero-web\ClientApp\node_modules\@angular-devkit\build-optimizer\src\build-optimizer\webpack-loader.js:40:40)