From 76cd917c94e7c3ca6e55f17dc9cc4c5b34b8e8d3 Mon Sep 17 00:00:00 2001
From: jesset <jesset@qualtrics.com>
Date: Fri, 13 Sep 2019 10:43:28 -0600
Subject: [PATCH] Add hashPrefix support option

---
 src/index.js |  5 ++++-
 test/test.js | 17 +++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/index.js b/src/index.js
index 2b6a4f3..63a1058 100644
--- a/src/index.js
+++ b/src/index.js
@@ -21,7 +21,10 @@ function getScopedNameGenerator(opts) {
   const scopedNameGenerator = opts.generateScopedName || generateScopedName;
 
   if (typeof scopedNameGenerator === "function") return scopedNameGenerator;
-  return genericNames(scopedNameGenerator, { context: process.cwd() });
+  return genericNames(scopedNameGenerator, {
+    context: process.cwd(),
+    hashPrefix: opts.hashPrefix
+  });
 }
 
 function getLoader(opts, plugins) {
diff --git a/test/test.js b/test/test.js
index ffd6154..a2d54c1 100644
--- a/test/test.js
+++ b/test/test.js
@@ -118,6 +118,23 @@ test("processes camelCase option", async t => {
   });
 });
 
+test("processes hashPrefix option", async t => {
+  const generateScopedName = "[hash:base64:5]";
+  const hashPrefix = "prefix";
+  const getJSON = () => {};
+
+  const withoutHashPrefix = plugin({ generateScopedName, getJSON });
+  const withHashPrefix = plugin({ generateScopedName, getJSON, hashPrefix });
+
+  const css = ".foo {}";
+  const params = { from: "test.css" };
+
+  const result1 = await postcss([withoutHashPrefix]).process(css, params);
+  const result2 = await postcss([withHashPrefix]).process(css, params);
+
+  t.not(result1.css, result2.css);
+});
+
 test("different instances have different generateScopedName functions", async t => {
   const one = plugin({
     generateScopedName: () => "one",