From f506e66ccb495bc6021dbccacffca5c715fc4058 Mon Sep 17 00:00:00 2001
From: Wolfgang Faust <wolfgang42@users.noreply.github.com>
Date: Fri, 24 May 2019 16:32:28 -0400
Subject: [PATCH] Add @types/compare-function. (#35702)

---
 .../compare-function-tests.ts                 | 19 +++++++++++++++
 types/compare-function/index.d.ts             |  8 +++++++
 types/compare-function/tsconfig.json          | 23 +++++++++++++++++++
 types/compare-function/tslint.json            |  1 +
 4 files changed, 51 insertions(+)
 create mode 100644 types/compare-function/compare-function-tests.ts
 create mode 100644 types/compare-function/index.d.ts
 create mode 100644 types/compare-function/tsconfig.json
 create mode 100644 types/compare-function/tslint.json

diff --git a/types/compare-function/compare-function-tests.ts b/types/compare-function/compare-function-tests.ts
new file mode 100644
index 0000000000..5381992eea
--- /dev/null
+++ b/types/compare-function/compare-function-tests.ts
@@ -0,0 +1,19 @@
+import compare = require('compare-function');
+
+const songs = [{
+    artist: 'Joy Division',
+    track: 'Warsaw'
+}, {
+    artist: 'New Order',
+    track: 'Blue Monday'
+}, {
+    artist: 'Freebass',
+    track: 'Plan B'
+}];
+
+function artist(song: {artist: string}) {
+    return song.artist;
+}
+
+songs.sort(compare(artist)).map(artist);
+songs.sort(compare(-1, artist)).map(artist);
diff --git a/types/compare-function/index.d.ts b/types/compare-function/index.d.ts
new file mode 100644
index 0000000000..14c46fcd5e
--- /dev/null
+++ b/types/compare-function/index.d.ts
@@ -0,0 +1,8 @@
+// Type definitions for compare-function 2.0
+// Project: https://github.com/michaelrhodes/compare-function
+// Definitions by: Wolfgang Faust <https://github.com/wolfgang42>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare function compare<T>(fn: (item: T) => any): (a: T, b: T) => -1 | 0 | 1;
+declare function compare<T>(sign: number, fn: (item: T) => any): (a: T, b: T) => -1 | 0 | 1;
+export = compare;
diff --git a/types/compare-function/tsconfig.json b/types/compare-function/tsconfig.json
new file mode 100644
index 0000000000..24264f3c20
--- /dev/null
+++ b/types/compare-function/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "compare-function-tests.ts"
+    ]
+}
diff --git a/types/compare-function/tslint.json b/types/compare-function/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/compare-function/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }