feat(config): allowing custom package json path (#57)

README.md

@@ -67,6 +67,7 @@ metadata of the operations to Epsagon's infrastructure instead of the
 operation's full data.
 * `handlersDirName` - Customize the name of the directory epsagon stores its
 handlers in. Do not use this option unless you know what you are doing :)
+* `packageJsonPath` - Customize the path of your package.json (default ./package.json)
 
 ### Function Level Options
 These options are defined at the function level, under the `epsagon` member

src/index.js

@@ -26,7 +26,7 @@ const VALIDATE_LIB_BY_LANG = {
   async node() {
     let pack;
     try {
-      pack = await fs.readJson(join(this.prefix, 'package.json'));
+      pack = await fs.readJson(this.config().packageJsonPath || (join(this.prefix, 'package.json')));
     } catch (err) {
       this.log('Could not read package.json. Skipping Epsagon library validation - please make sure you have it installed!');
       return;