From 86c875f7e976fee3df6e13e32be8130ae2f8b9ec Mon Sep 17 00:00:00 2001
From: Daniel Imms <2193314+Tyriar@users.noreply.github.com>
Date: Tue, 9 Jul 2024 13:08:57 -0700
Subject: [PATCH] Helper script for finding unused files

---
 bin/vs_base_find_used_files.js | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 bin/vs_base_find_used_files.js

diff --git a/bin/vs_base_find_used_files.js b/bin/vs_base_find_used_files.js
new file mode 100644
index 00000000..50ffaf4f
--- /dev/null
+++ b/bin/vs_base_find_used_files.js
@@ -0,0 +1,24 @@
+// @ts-check
+
+const { dirname } = require("path");
+const ts = require("typescript");
+
+function findUnusedSymbols(
+  /** @type string */ tsconfigPath
+) {
+  // Initialize a program using the project's tsconfig.json
+  const configFile = ts.readConfigFile(tsconfigPath, ts.sys.readFile);
+  const parsedConfig = ts.parseJsonConfigFileContent(configFile.config, ts.sys, dirname(tsconfigPath));
+
+  // Initialize a program with the parsed configuration
+  const program = ts.createProgram(parsedConfig.fileNames, {
+    ...parsedConfig.options,
+    noUnusedLocals: true
+  });
+  const sourceFiles = program.getSourceFiles();
+  const usedBaseSourceFiles = sourceFiles.filter(e => e.fileName.includes('src/vs/base/'));
+  console.log('Source files used in src/vs/base/:', usedBaseSourceFiles.map(e => e.fileName.replace(/^.+\/src\//, 'src/')).sort((a, b) => a.localeCompare(b)));
+}
+
+// Example usage
+findUnusedSymbols("./src/browser/tsconfig.json");