From b96bd94b8d9784ca69f1fa28b3b48f30bed36ddb Mon Sep 17 00:00:00 2001
From: Blake Newman <blake.newman@askattest.com>
Date: Mon, 6 Jun 2022 09:48:49 +0100
Subject: [PATCH] feat(vue-tsc): support tracing

Proxy tracing API to `tsserverlibrary`

fixes: #1375
---
 packages/vue-tsc/bin/vue-tsc.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/packages/vue-tsc/bin/vue-tsc.js b/packages/vue-tsc/bin/vue-tsc.js
index 80ac8132c..de6c7a79a 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("typescript/lib/tsserverlibrary").startTracing;`,
+        );
+
+        tsc = tsc.replace(
+            `ts.dumpTracingLegend = tracingEnabled.dumpLegend;`,
+            `ts.dumpTracingLegend = require("typescript/lib/tsserverlibrary").dumpTracingLegend;`,
+        );
+
         return tsc;
     }
     return readFileSync(...args);