Uncaught Error: Can't resolve all parameters for DarkenOnHoverDirective: ([object Object], ?). at syntaxError (compiler.js:1021) at CompileMetadataResolver.push../nodemodules/@angular/compiler/fesm5/compiler.js.CompileMetadataResolver.getDependenciesMetadata (compiler.js:10922) at CompileMetadataResolver.push../nodemodules/@angular/compiler/fesm5/compiler.js.CompileMetadataResolver.getTypeMetadata (compiler.js:10815) at CompileMetadataResolver.push../nodemodules/@angular/compiler/fesm5/compiler.js.CompileMetadataResolver.getNonNormalizedDirectiveMetadata (compiler.js:10434) at CompileMetadataResolver.push../nodemodules/@angular/compiler/fesm5/compiler.js.CompileMetadataResolver.loadDirectiveMetadata (compiler.js:10296) at compiler.js:23883 at Array.forEach () at compiler.js:23882 at Array.forEach () at JitCompiler.push../nodemodules/@angular/compiler/fesm5/compiler.js.JitCompiler.loadModules (compiler.js:23879)
