Add @types/compare-function. (#35702)

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);

types/compare-function/index.d.ts

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+// 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;

types/compare-function/tsconfig.json

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+{
+    "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"
+    ]
+}

types/compare-function/tslint.json

@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }