Fix TokenOrIdentifierObject.getText() crash (#19673)

mmorearty · mhegazy · commit 1a7a587a9ea1 · 2017-11-01T16:37:06.000-07:00
TokenOrIdentifierObject.getText() needs to pass `sourceFile` as an argument to `getStart()`. Fixes #19670
diff --git a/src/services/services.ts b/src/services/services.ts
@@ -276,7 +276,10 @@ namespace ts {
         }
 
         public getText(sourceFile?: SourceFile): string {
-            return (sourceFile || this.getSourceFile()).text.substring(this.getStart(), this.getEnd());
+            if (!sourceFile) {
+                sourceFile = this.getSourceFile();
+            }
+            return sourceFile.text.substring(this.getStart(sourceFile), this.getEnd());
         }
 
         public getChildCount(): number {

Original file line number	Diff line number	Diff line change
`@@ -276,7 +276,10 @@ namespace ts {`
`276`	`276`	`}`
`277`	`277`
`278`	`278`	`public getText(sourceFile?: SourceFile): string {`
`279`		`- return (sourceFile \|\| this.getSourceFile()).text.substring(this.getStart(), this.getEnd());`
	`279`	`+ if (!sourceFile) {`
	`280`	`+ sourceFile = this.getSourceFile();`
	`281`	`+ }`
	`282`	`+ return sourceFile.text.substring(this.getStart(sourceFile), this.getEnd());`
`280`	`283`	`}`
`281`	`284`
`282`	`285`	`public getChildCount(): number {`