From 0759a5cb9f7170f9553454efdca54d1961b83ae6 Mon Sep 17 00:00:00 2001
From: Blake Newman <blake.newman@askattest.com>
Date: Mon, 6 Jun 2022 13:46:34 +0100
Subject: [PATCH] feat(vue-tsc): support tracing (#1402)

Co-authored-by: johnsoncodehk <johnsoncodehk@gmail.com>
---
 packages/vue-tsc/bin/vue-tsc.js | 12 ++++++++++++
 packages/vue-tsc/src/proxy.ts   |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/packages/vue-tsc/bin/vue-tsc.js b/packages/vue-tsc/bin/vue-tsc.js
index 5a5eeabd4..04d21a1b7 100755
--- a/packages/vue-tsc/bin/vue-tsc.js
+++ b/packages/vue-tsc/bin/vue-tsc.js
@@ -32,6 +32,18 @@ fs.readFileSync = (...args) => {
             `function createProgram(rootNamesOrOptions, _options, _host, _oldProgram, _configFileParsingDiagnostics) {`,
             `function createProgram(rootNamesOrOptions, _options, _host, _oldProgram, _configFileParsingDiagnostics) { return require(${JSON.stringify(proxyPath)}).createProgramProxy(...arguments);`,
         );
+
+        // proxy tracing
+        tsc = tsc.replace(
+            `ts.startTracing = tracingEnabled.startTracing;`,
+            `ts.startTracing = require(${JSON.stringify(proxyPath)}).loadTsLib().startTracing;`,
+        );
+
+        tsc = tsc.replace(
+            `ts.dumpTracingLegend = tracingEnabled.dumpLegend;`,
+            `ts.dumpTracingLegend = require(${JSON.stringify(proxyPath)}).loadTsLib().dumpTracingLegend;`,
+        );
+
         return tsc;
     }
     return readFileSync(...args);
diff --git a/packages/vue-tsc/src/proxy.ts b/packages/vue-tsc/src/proxy.ts
index a23ddce99..1affe0156 100644
--- a/packages/vue-tsc/src/proxy.ts
+++ b/packages/vue-tsc/src/proxy.ts
@@ -119,6 +119,10 @@ export function createProgramProxy(
 	}
 }
 
+export function loadTsLib() {
+	return ts;
+}
+
 function doThrow(msg: string) {
 	console.error(msg);
 	throw msg;