From 54044155a51001529be24d393e24868948fb4bbb Mon Sep 17 00:00:00 2001
From: Ryan McKinley <ryantxu@gmail.com>
Date: Mon, 23 Dec 2019 22:05:26 -0800
Subject: [PATCH] Units: support farenheit (existing misspelling) (#21249)

(cherry picked from commit af2cd77655a3db2538e9ecf3efea4f3067b83140)
---
 .../grafana-data/src/valueFormats/valueFormats.test.ts    | 8 ++++++++
 packages/grafana-data/src/valueFormats/valueFormats.ts    | 8 ++++++++
 2 files changed, 16 insertions(+)

diff --git a/packages/grafana-data/src/valueFormats/valueFormats.test.ts b/packages/grafana-data/src/valueFormats/valueFormats.test.ts
index 78a0c4a26c3..5a996b6a16d 100644
--- a/packages/grafana-data/src/valueFormats/valueFormats.test.ts
+++ b/packages/grafana-data/src/valueFormats/valueFormats.test.ts
@@ -53,4 +53,12 @@ describe('valueFormats', () => {
       expect(str).toBe('1.200 s');
     });
   });
+
+  describe('Resolve old units', () => {
+    it('resolve farenheit', () => {
+      const fmt0 = getValueFormat('farenheit');
+      const fmt1 = getValueFormat('fahrenheit');
+      expect(fmt0).toEqual(fmt1);
+    });
+  });
 });
diff --git a/packages/grafana-data/src/valueFormats/valueFormats.ts b/packages/grafana-data/src/valueFormats/valueFormats.ts
index 0e99b6021c1..68ccea14f61 100644
--- a/packages/grafana-data/src/valueFormats/valueFormats.ts
+++ b/packages/grafana-data/src/valueFormats/valueFormats.ts
@@ -142,6 +142,14 @@ function buildFormats() {
     }
   }
 
+  // Resolve units pointing to old IDs
+  [{ from: 'farenheit', to: 'fahrenheit' }].forEach(alias => {
+    const f = index[alias.to];
+    if (f) {
+      index[alias.from] = f;
+    }
+  });
+
   hasBuiltIndex = true;
 }