Add assertion message

rbuckton · rbuckton · commit de10e82e8ac4 · 2018-05-03T16:27:15.000-07:00
diff --git a/src/compiler/emitter.ts b/src/compiler/emitter.ts
@@ -486,7 +486,7 @@ namespace ts {
                     return pipelineEmitWithHint;
 
                 default:
-                    return Debug.assertNever(phase);
+                    return Debug.assertNever(phase, `Unexpected value for PipelinePhase: ${phase}`);
             }
         }
 

Original file line number	Diff line number	Diff line change
`@@ -486,7 +486,7 @@ namespace ts {`
`486`	`486`	`return pipelineEmitWithHint;`
`487`	`487`
`488`	`488`	`default:`
`489`		`- return Debug.assertNever(phase);`
	`489`	+ return Debug.assertNever(phase, `Unexpected value for PipelinePhase: ${phase}`);
`490`	`490`	`}`
`491`	`491`	`}`
`492`	`492`