From 051ce830be281b8fa7e93a6a07dbfd53954062fd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kamil=20Og=C3=B3rek?= <kamil.ogorek@gmail.com>
Date: Thu, 21 Feb 2019 17:05:55 +0100
Subject: [PATCH] ref: Remove lsmod dependency

---
 packages/integrations/package.json   |  1 -
 packages/integrations/src/modules.ts | 56 +++++++++++++++++++++++++++-
 2 files changed, 54 insertions(+), 3 deletions(-)

diff --git a/packages/integrations/package.json b/packages/integrations/package.json
index b85ca5e608c6..dc036a85aa3b 100644
--- a/packages/integrations/package.json
+++ b/packages/integrations/package.json
@@ -17,7 +17,6 @@
     "@sentry/hub": "4.6.3",
     "@sentry/types": "4.5.3",
     "@sentry/utils": "4.6.3",
-    "lsmod": "1.0.0",
     "tslib": "^1.9.3"
   },
   "devDependencies": {
diff --git a/packages/integrations/src/modules.ts b/packages/integrations/src/modules.ts
index 8d1a508c116f..2adbd2e0db7d 100644
--- a/packages/integrations/src/modules.ts
+++ b/packages/integrations/src/modules.ts
@@ -1,9 +1,61 @@
 import { addGlobalEventProcessor, getCurrentHub } from '@sentry/core';
 import { Integration } from '@sentry/types';
-import * as lsmod from 'lsmod';
+import { existsSync, readFileSync } from 'fs';
+import { dirname, join } from 'path';
 
 let moduleCache: { [key: string]: string };
 
+/** Extract information about package.json modules */
+function collectModules(): {
+  [name: string]: string;
+} {
+  const mainPaths = (require.main && require.main.paths) || [];
+  const paths = require.cache ? Object.keys(require.cache as {}) : [];
+  const infos: {
+    [name: string]: string;
+  } = {};
+  const seen: {
+    [path: string]: boolean;
+  } = {};
+
+  paths.forEach(path => {
+    let dir = path;
+
+    /** Traverse directories upward in the search of package.json file */
+    const updir = (): void | (() => void) => {
+      const orig = dir;
+      dir = dirname(orig);
+
+      if (!dir || orig === dir || seen[orig]) {
+        return undefined;
+      } else if (mainPaths.indexOf(dir) < 0) {
+        return updir();
+      }
+
+      const pkgfile = join(orig, 'package.json');
+      seen[orig] = true;
+
+      if (!existsSync(pkgfile)) {
+        return updir();
+      }
+
+      try {
+        const info = JSON.parse(readFileSync(pkgfile, 'utf8')) as {
+          name: string;
+          version: string;
+        };
+        infos[info.name] = info.version;
+      } catch (_oO) {
+        // no-empty
+      }
+    };
+
+    updir();
+  });
+
+  return infos;
+}
+
 /** Add node modules / packages to the event */
 export class Modules implements Integration {
   /**
@@ -34,7 +86,7 @@ export class Modules implements Integration {
   private getModules(): { [key: string]: string } {
     if (!moduleCache) {
       // tslint:disable-next-line:no-unsafe-any
-      moduleCache = lsmod();
+      moduleCache = collectModules();
     }
     return moduleCache;
   }