From b994057d5b77dfea2f5a8e99c1779ac583d8b7a2 Mon Sep 17 00:00:00 2001
From: Kitson Kelly <me@kitsonkelly.com>
Date: Wed, 24 Jun 2020 21:35:10 +1000
Subject: [PATCH] add stats to transpile

---
 cli/js/compiler.ts | 15 ++++++++-------
 cli/tsc.rs         |  8 ++++++++
 2 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/cli/js/compiler.ts b/cli/js/compiler.ts
index 3aaec3d188d823..a40399d3595d53 100644
--- a/cli/js/compiler.ts
+++ b/cli/js/compiler.ts
@@ -1139,6 +1139,7 @@ interface TranspileRequest {
   config?: string;
   configPath?: string;
   cwd?: string;
+  performance: boolean;
   sourceFileMap: Record<string, SourceFileMapEntry>;
 }
 
@@ -1304,9 +1305,12 @@ function transpile({
   config: configText,
   configPath,
   cwd,
+  performance,
   sourceFileMap,
 }: TranspileRequest): CompileResponse {
-  const start = performance.now();
+  if (performance) {
+    performanceStart();
+  }
   log(">>> transpile start");
   const compilerOptions: ts.CompilerOptions = Object.assign(
     {},
@@ -1364,12 +1368,9 @@ function transpile({
     emitMap[`${filename}.js`] = { filename, contents: outputText };
     emitMap[`${filename}.map`] = { filename, contents: sourceMapText };
   }
-  log("<<< transpile end", {
-    in: Object.keys(sourceFileMap).length,
-    out: Object.keys(emitMap).length,
-    duration: performance.now() - start,
-  });
-  return { diagnostics: fromTypeScriptDiagnostic(diagnostics), emitMap };
+  const stats = performance ? performanceEnd() : undefined;
+  log("<<< transpile end");
+  return { diagnostics: fromTypeScriptDiagnostic(diagnostics), emitMap, stats };
 }
 
 function bundle({
diff --git a/cli/tsc.rs b/cli/tsc.rs
index 2f036e29a51487..812235514305ad 100644
--- a/cli/tsc.rs
+++ b/cli/tsc.rs
@@ -632,16 +632,22 @@ impl TsCompiler {
       serde_json::to_value(module_graph).expect("Failed to serialize data");
     let compiler_config = self.config.clone();
     let cwd = std::env::current_dir().unwrap();
+    let performance = match global_state.flags.log_level {
+      Some(Level::Debug) => true,
+      _ => false,
+    };
     let j = match (compiler_config.path, compiler_config.content) {
       (Some(config_path), Some(config_data)) => json!({
         "type": msg::CompilerRequestType::Transpile,
         "configPath": config_path,
         "config": str::from_utf8(&config_data).unwrap(),
         "cwd": cwd,
+        "performance": performance,
         "sourceFileMap": module_graph_json,
       }),
       _ => json!({
         "type": msg::CompilerRequestType::Transpile,
+        "performance": performance,
         "sourceFileMap": module_graph_json,
       }),
     };
@@ -663,6 +669,8 @@ impl TsCompiler {
 
     let transpile_response: CompileResponse = serde_json::from_str(json_str)?;
 
+    maybe_log_stats(transpile_response.stats);
+
     if !transpile_response.diagnostics.items.is_empty() {
       return Err(ErrBox::from(transpile_response.diagnostics));
     }