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changeset 496:3c962af5342c

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Work-around for causing a compile error for non-exhaustive switch on discriminated union.
author Lucas Thompson <dev@lucas.im>
date Fri, 21 Jul 2017 14:29:02 +0100
parents 33b4106af9dd
children c39df81c4dae
files src/app/visualisations/FeatureUtilities.ts
diffstat 1 files changed, 5 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/src/app/visualisations/FeatureUtilities.ts	Fri Jul 21 14:21:26 2017 +0100
+++ b/src/app/visualisations/FeatureUtilities.ts	Fri Jul 21 14:29:02 2017 +0100
@@ -109,7 +109,10 @@
   return ['vector', 'matrix', 'tracks'].includes(shape);
 }
 
-const throwShapeError = () => { throw new Error('No shape could be deduced'); };
+function throwShapeError(compileAssertion?: never) {
+  throw new Error('No shape could be deduced');
+}
+
 function deduceHigherLevelFeatureShape(response: SimpleResponse)
 : HigherLevelFeatureShape {
   const collection = response.features;
@@ -180,7 +183,7 @@
         }))
       };
   }
-  throwShapeError();
+  throwShapeError(deducedShape);
 }
 
 export interface PlotDataPoint {