From 8ef263d607f862ce5bd1755497988af176240190 Mon Sep 17 00:00:00 2001
From: Aaron Friedlander <aaron.abf@gmail.com>
Date: Thu, 20 Feb 2025 20:51:35 -0500
Subject: [PATCH] Support check only files for libraries

---
 src/analyzer.ts     |  5 ++++-
 src/app.ts          | 13 +++++++++++--
 src/parser/index.ts |  2 +-
 src/types.ts        |  2 ++
 4 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/src/analyzer.ts b/src/analyzer.ts
index 5a7fb25..953f358 100644
--- a/src/analyzer.ts
+++ b/src/analyzer.ts
@@ -268,13 +268,16 @@ const makeExportStarRelativeForPresentation = (
 
 export default (
   files: File[],
+  checkOnlyFiles: File[],
   extraOptions?: ExtraCommandLineOptions & ExtraOptionsForPresentation,
 ): Analysis => {
   const filteredFiles = filterFiles(files, extraOptions);
 
   const exportMap = getExportMap(filteredFiles);
   expandExportFromStar(filteredFiles, exportMap);
-  filteredFiles.forEach((file) => processImports(file, exportMap));
+  [...filteredFiles, ...checkOnlyFiles].forEach((file) =>
+    processImports(file, exportMap),
+  );
 
   const analysis: Analysis = { unusedExports: {} };
   const unusedFiles: string[] = [];
diff --git a/src/app.ts b/src/app.ts
index bd1d395..ec7bb38 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -61,11 +61,20 @@ export const analyzeTsConfig = (
   files?: string[],
 ): Analysis => {
   const args = extractOptionsFromFiles(files);
-  const tsConfig = loadTsConfig(tsconfigPath, args.tsFiles);
+  const tsConfig = loadTsConfig(
+    tsconfigPath,
+    args.options?.onlyCheckInputFiles ? args.tsFiles : [],
+  );
+
+  const normalFiles = parseFiles(tsConfig, args.options);
+
+  const checkOnlyFiles = args.options?.onlyCheckInputFiles
+    ? parseFiles({ ...tsConfig, files: args.tsFiles ?? [] }, args.options)
+    : [];
 
   const options = {
     ...args.options,
     baseUrl: tsConfig.baseUrl,
   };
-  return analyze(parseFiles(tsConfig, args.options), options);
+  return analyze(normalFiles, checkOnlyFiles, options);
 };
diff --git a/src/parser/index.ts b/src/parser/index.ts
index cc54e1a..6f5e87a 100644
--- a/src/parser/index.ts
+++ b/src/parser/index.ts
@@ -110,7 +110,7 @@ const parseFile = (
       path,
       readFileSync(path, { encoding: 'utf8' }),
       ts.ScriptTarget.ES2015,
-      /*setParentNodes */ true,
+      /* setParentNodes */ true,
     ),
     baseUrl,
     paths,
diff --git a/src/types.ts b/src/types.ts
index 4cfa653..e3de373 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -43,6 +43,7 @@ export interface TsConfig {
   baseUrl: string;
   paths?: TsConfigPaths;
   files: string[];
+  checkOnlyFiles?: string[];
 }
 
 export interface ExtraCommandLineOptions {
@@ -59,6 +60,7 @@ export interface ExtraCommandLineOptions {
   showLineNumber?: boolean;
   silent?: boolean;
   findCompletelyUnusedFiles?: boolean;
+  onlyCheckInputFiles?: boolean;
 }
 
 export interface ExtraOptionsForPresentation {