From c2e0558627b2645559e4351ff0f5823cef9ad89d Mon Sep 17 00:00:00 2001
From: Rowan Oulton <rowan.oulton@gmail.com>
Date: Fri, 21 Apr 2017 11:43:18 -0700
Subject: [PATCH] Add optional ID parameter

---
 README.md | 1 +
 index.js  | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index f6e5b833..0adc9479 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,7 @@ StringReplacePlugin.replace([nextLoaders: string], options, [prevLoaders: string
   * `replacements` disables the plugin
     * `pattern` a regex to match against the file contents
     * `replacement` an ECMAScript [string replacement function](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace#Specifying_a_function_as_a_parameter)
+    * `id` an optional id. defaults to a random string
 * `prevLoaders` loaders to apply prior to the replacement
 
 ## License
diff --git a/index.js b/index.js
index 644c62cf..076dbec1 100644
--- a/index.js
+++ b/index.js
@@ -36,7 +36,7 @@ StringReplacePlugin.replace = function(nextLoaders, replaceOptions, prevLoaders)
         throw new Error("Invalid options for StringReplaceOptions.  Ensure the options objects has an array of replacements");
     }
 
-    var id = Math.random().toString(36).slice(2);
+    var id = replaceOptions.id && replaceOptions.id.length ? replaceOptions.id : Math.random().toString(36).slice(2);
     opts[id] = replaceOptions;
     var replaceLoader = require.resolve("./loader") + "?id=" + id,
         val = replaceLoader;