From 72c0961071a29ab41e011b59bc50046c04b4d21e Mon Sep 17 00:00:00 2001
From: Arpad Borsos <arpad.borsos@googlemail.com>
Date: Sat, 14 Sep 2019 01:53:04 +0200
Subject: [PATCH] Force a gc before printing diagnostics

Use this together with `node --expose-gc` to get more stable results
---
 src/tsc/tsc.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/tsc/tsc.ts b/src/tsc/tsc.ts
index fc75e28d504..2e837a09594 100644
--- a/src/tsc/tsc.ts
+++ b/src/tsc/tsc.ts
@@ -322,6 +322,10 @@ namespace ts {
         const compilerOptions = program.getCompilerOptions();
         if (compilerOptions.diagnostics || compilerOptions.extendedDiagnostics) {
             statistics = [];
+
+            // @ts-ignore
+            if (typeof gc === "function") { gc(); }
+
             const memoryUsed = sys.getMemoryUsage ? sys.getMemoryUsage() : -1;
             reportCountStatistic("Files", program.getSourceFiles().length);
             reportCountStatistic("Lines", countLines(program));