From 2a92293a59c19efb1aebd14b4104f62f29f43899 Mon Sep 17 00:00:00 2001
From: John Renner <john@jrenner.net>
Date: Tue, 18 Jul 2017 16:15:06 -0700
Subject: [PATCH] Add types for fast-diff

---
 types/fast-diff/fast-diff-tests.ts | 16 ++++++++++++++++
 types/fast-diff/index.d.ts         | 16 ++++++++++++++++
 types/fast-diff/tsconfig.json      | 22 ++++++++++++++++++++++
 types/fast-diff/tslint.json        |  1 +
 4 files changed, 55 insertions(+)
 create mode 100644 types/fast-diff/fast-diff-tests.ts
 create mode 100644 types/fast-diff/index.d.ts
 create mode 100644 types/fast-diff/tsconfig.json
 create mode 100644 types/fast-diff/tslint.json

diff --git a/types/fast-diff/fast-diff-tests.ts b/types/fast-diff/fast-diff-tests.ts
new file mode 100644
index 0000000000..93c512d99b
--- /dev/null
+++ b/types/fast-diff/fast-diff-tests.ts
@@ -0,0 +1,16 @@
+import fastDiff = require('fast-diff');
+
+let diffs: fastDiff.Diff[];
+diffs = fastDiff("hi there", "hi");
+diffs = fastDiff("hi there", "hi", 1);
+
+diffs.forEach((diff: fastDiff.Diff) => {
+    const operation: number = diff[0];
+    const text: string = diff[1];
+
+    switch (diff[0]) {
+        case fastDiff.DIFF_EQUAL: break;
+        case fastDiff.DIFF_DELETE: break;
+        case fastDiff.DIFF_INSERT: break;
+    }
+});
diff --git a/types/fast-diff/index.d.ts b/types/fast-diff/index.d.ts
new file mode 100644
index 0000000000..484fca223f
--- /dev/null
+++ b/types/fast-diff/index.d.ts
@@ -0,0 +1,16 @@
+// Type definitions for fast-diff 1.1
+// Project: https://github.com/jhchen/fast-diff#readme
+// Definitions by: John Renner <https://github.com/djrenren>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare function diff(text1: string, text2: string, cursorPos?: number): diff.Diff[];
+
+declare namespace diff {
+    type Diff = [-1 | 0 | 1, string];
+
+    const DIFF_DELETE: -1;
+    const DIFF_INSERT: 1;
+    const DIFF_EQUAL: 0;
+}
+
+export = diff;
diff --git a/types/fast-diff/tsconfig.json b/types/fast-diff/tsconfig.json
new file mode 100644
index 0000000000..e89403e0ef
--- /dev/null
+++ b/types/fast-diff/tsconfig.json
@@ -0,0 +1,22 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "fast-diff-tests.ts"
+    ]
+}
diff --git a/types/fast-diff/tslint.json b/types/fast-diff/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/fast-diff/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }