Set the structureReused to be safemoudles when dynamic import change

Yui T · Kanchalai Tanglertsampan · commit 15ef20db3c70 · 2017-06-19T16:49:35.000-07:00
diff --git a/src/compiler/program.ts b/src/compiler/program.ts
@@ -804,7 +804,7 @@ namespace ts {
                     }
                     if ((oldSourceFile.flags & NodeFlags.PossiblyContainsDynamicImport) !== (newSourceFile.flags & NodeFlags.PossiblyContainsDynamicImport)) {
                         // dynamicImport has changed
-                        oldProgram.structureIsReused = StructureIsReused.Not;
+                        oldProgram.structureIsReused = StructureIsReused.SafeModules;
                     }
 
                     if (!arrayIsEqualTo(oldSourceFile.typeReferenceDirectives, newSourceFile.typeReferenceDirectives, fileReferenceIsEqualTo)) {

Original file line number	Diff line number	Diff line change
`@@ -804,7 +804,7 @@ namespace ts {`
`804`	`804`	`}`
`805`	`805`	`if ((oldSourceFile.flags & NodeFlags.PossiblyContainsDynamicImport) !== (newSourceFile.flags & NodeFlags.PossiblyContainsDynamicImport)) {`
`806`	`806`	`// dynamicImport has changed`
`807`		`- oldProgram.structureIsReused = StructureIsReused.Not;`
	`807`	`+ oldProgram.structureIsReused = StructureIsReused.SafeModules;`
`808`	`808`	`}`
`809`	`809`
`810`	`810`	`if (!arrayIsEqualTo(oldSourceFile.typeReferenceDirectives, newSourceFile.typeReferenceDirectives, fileReferenceIsEqualTo)) {`