improvements

package.json

@@ -2,7 +2,7 @@
   "name": "ts-unused-exports",
   "version": "10.1.0",
   "description": "ts-unused-exports finds unused exported symbols in your Typescript project",
-  "main": "lib/app.js",
+  "main": "lib/index.js",
   "repository": {
     "type": "git",
     "url": "https://github.com/pzavolinsky/ts-unused-exports.git"

src/app.ts

@@ -3,7 +3,7 @@ import * as ts from 'typescript';
 import analyze, { Analysis } from './analyzer';
 import { dirname, resolve } from 'path';
 
-import { TsConfig } from './types';
+import type { TsConfig } from './types';
 import { extractOptionsFromFiles } from './argsParser';
 import parseFiles from './parser';
 
@@ -69,5 +69,3 @@ export const analyzeTsConfig = (
   };
   return analyze(parseFiles(tsConfig, args.options), options);
 };
-
-export * from './analyzer';

src/find-unused.ts

@@ -0,0 +1,55 @@
+import path = require('path');
+import { analyzeTsConfig } from './app';
+import { Analysis } from './types';
+
+interface UnusedOptions {
+  tsConfigPath?: string;
+  ignoreVars?: string[];
+  ignoreFiles?: string[];
+}
+
+/** Find all the unused variables in your code. */
+// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
+export const findUnusedExports = ({
+  ignoreFiles,
+  ignoreVars,
+  tsConfigPath = path.resolve('.', 'tsconfig.json'),
+}: UnusedOptions = {}) => {
+  const analyzed = analyzeTsConfig(tsConfigPath);
+  const response: Analysis = {};
+  for (const [key, value] of Object.entries(analyzed)) {
+    const filename = path.basename(key);
+    if (ignoreFiles?.includes(filename)) {
+      ignoreFiles.splice(ignoreFiles.indexOf(filename), 1);
+      continue;
+    }
+    const filteredExports = [];
+    for (const v of value) {
+      if (ignoreVars?.includes(v.exportName)) {
+        ignoreVars.splice(ignoreVars.indexOf(v.exportName), 1);
+      } else {
+        filteredExports.push(v);
+      }
+    }
+
+    if (filteredExports.length > 0) {
+      response[key] = filteredExports;
+    }
+  }
+
+  if (ignoreFiles && ignoreFiles.length > 0) {
+    throw new Error(
+      `The following ignore entries are no longer needed: 
+      ${ignoreFiles.length > 0 ? `Files: ${ignoreFiles.join(',\n')}` : ''}`,
+    );
+  }
+
+  if (ignoreVars && ignoreVars.length > 0) {
+    throw new Error(
+      `The following ignore entries are no longer needed: 
+      ${ignoreVars.length > 0 ? `Variables: ${ignoreVars.join(', ')}` : ''}`,
+    );
+  }
+
+  return Object.keys(response).length > 0 ? response : undefined;
+};

src/index.ts

@@ -0,0 +1,3 @@
+export * from './analyzer';
+export * from './app';
+export * from './find-unused';

tsconfig.json

@@ -9,6 +9,5 @@
     "strictNullChecks": true,
     "strict": true
   },
-  "exclude": ["node_modules"],
-  "include": ["src/**/*.ts"]
+  "include": ["src"]
 }