Set a high stack trace limit in command-line and server scenarios (microsoft#17464)

Andy · web-flow · commit bb34bce4208c · 2017-08-02T12:40:39.000-07:00
diff --git a/src/compiler/sys.ts b/src/compiler/sys.ts
@@ -4,6 +4,18 @@ declare function setTimeout(handler: (...args: any[]) => void, timeout: number):
 declare function clearTimeout(handle: any): void;
 
 namespace ts {
+    /**
+     * Set a high stack trace limit to provide more information in case of an error.
+     * Called for command-line and server use cases.
+     * Not called if TypeScript is used as a library.
+     */
+    /* @internal */
+    export function setStackTraceLimit() {
+        if ((Error as any).stackTraceLimit < 100) { // Also tests that we won't set the property if it doesn't exist.
+            (Error as any).stackTraceLimit = 100;
+        }
+    }
+
     export enum FileWatcherEventKind {
         Created,
         Changed,
diff --git a/src/compiler/tsc.ts b/src/compiler/tsc.ts
@@ -665,6 +665,8 @@ namespace ts {
     }
 }
 
+ts.setStackTraceLimit();
+
 if (ts.Debug.isDebugging) {
     ts.Debug.enableDebugInfo();
 }
diff --git a/src/server/server.ts b/src/server/server.ts
@@ -757,6 +757,8 @@ namespace ts.server {
         validateLocaleAndSetLanguage(localeStr, sys);
     }
 
+    setStackTraceLimit();
+
     const typingSafeListLocation = findArgument(Arguments.TypingSafeListLocation);
     const npmLocation = findArgument(Arguments.NpmLocation);
 

Original file line number	Diff line number	Diff line change
`@@ -757,6 +757,8 @@ namespace ts.server {`
`757`	`757`	`validateLocaleAndSetLanguage(localeStr, sys);`
`758`	`758`	`}`
`759`	`759`
	`760`	`+ setStackTraceLimit();`
	`761`	`+`
`760`	`762`	`const typingSafeListLocation = findArgument(Arguments.TypingSafeListLocation);`
`761`	`763`	`const npmLocation = findArgument(Arguments.NpmLocation);`
`762`	`764`