diff --git a/types/fast-list/fast-list-tests.ts b/types/fast-list/fast-list-tests.ts
new file mode 100644
index 0000000000..68e0fc6faf
--- /dev/null
+++ b/types/fast-list/fast-list-tests.ts
@@ -0,0 +1,89 @@
+import FastList = require('fast-list');
+
+const thisArg = {foo: 'bar'};
+
+const list = new FastList<string>();
+list; // $ExpectType List<string>
+FastList<number>(); // $ExpectType List<number>
+
+list.length; // $ExpectType number
+list.length = 1; // $ExpectError
+
+list.push('foo');
+list.pop(); // $ExpectType string | undefined
+list.unshift('bar');
+list.shift(); // $ExpectType string | undefined
+list.drop();
+list.item(2); // $ExpectType string | undefined
+
+list.map(function(value, index, list) { // $ExpectType List<string>
+    this; // $ExpectType List<string>
+    value; // $ExpectType string
+    index; // $ExpectType number
+    list; // $ExpectType List<string>
+    return value;
+});
+list.map(function(value, index, list) { // $ExpectType List<number>
+    this; // $ExpectType { foo: string; }
+    value; // $ExpectType string
+    index; // $ExpectType number
+    list; // $ExpectType List<string>
+    return 1;
+}, thisArg);
+
+list.reduce(function(prevVal, value, index, list) { // $ExpectType string
+    this; // $ExpectType List<string>
+    prevVal; // $ExpectType string
+    value; // $ExpectType string
+    index; // $ExpectType number
+    list; // $ExpectType List<string>
+    return prevVal;
+});
+list.reduce(function(prevVal, value, index, list) { // $ExpectType number
+    this; // $ExpectType List<string>
+    prevVal; // $ExpectType number
+    value; // $ExpectType string
+    index; // $ExpectType number
+    list; // $ExpectType List<string>
+    return prevVal;
+}, 1);
+list.reduce(function(prevVal, value, index, list) { // $ExpectType number
+    this; // $ExpectType { foo: string; }
+    prevVal; // $ExpectType number
+    value; // $ExpectType string
+    index; // $ExpectType number
+    list; // $ExpectType List<string>
+    return prevVal;
+}, 1, thisArg);
+
+list.forEach(function(value, index, list) {
+    this; // $ExpectType List<string>
+    value; // $ExpectType string
+    index; // $ExpectType number
+    list; // $ExpectType List<string>
+});
+list.forEach(function(value, index, list) {
+    this; // $ExpectType { foo: string; }
+    value; // $ExpectType string
+    index; // $ExpectType number
+    list; // $ExpectType List<string>
+}, thisArg);
+
+list.filter(function(value, index, list) { // $ExpectType List<string>
+    this; // $ExpectType List<string>
+    value; // $ExpectType string
+    index; // $ExpectType number
+    list; // $ExpectType List<string>
+    return true;
+});
+list.filter(function(value, index, list) { // $ExpectType List<string>
+    this; // $ExpectType { foo: string; }
+    value; // $ExpectType string
+    index; // $ExpectType number
+    list; // $ExpectType List<string>
+    return true;
+}, thisArg);
+
+list.slice(); // $ExpectType string[]
+list.slice(1); // $ExpectType string[]
+list.slice(1, -2); // $ExpectType string[]
diff --git a/types/fast-list/index.d.ts b/types/fast-list/index.d.ts
new file mode 100644
index 0000000000..2ac8fdaad0
--- /dev/null
+++ b/types/fast-list/index.d.ts
@@ -0,0 +1,33 @@
+// Type definitions for fast-list 1.0
+// Project: https://github.com/isaacs/fast-list#readme
+// Definitions by: BendingBender <https://github.com/BendingBender>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.3
+
+export as namespace FastList;
+export = FastList;
+
+declare const FastList: FastListFactory;
+
+interface FastListFactory {
+    <T>(): FastList.List<T>;
+    new <T>(): FastList.List<T>;
+}
+
+declare namespace FastList {
+    interface List<T> {
+        readonly length: number;
+
+        push(item: T): void;
+        pop(): T | undefined;
+        unshift(item: T): void;
+        shift(): T | undefined;
+        drop(): void;
+        item(index: number): T | undefined;
+        map <U = T, V = this>(callbackfn: (this: V, value: T, index: number, list: this) => U, thisArg?: V): List<U>;
+        reduce <U = T, V = this>(callbackfn: (this: V, acc: U, value: T, index: number, list: this) => U, initialValue?: U, thisArg?: V): U;
+        forEach <U = this>(callbackfn: (this: U, value: T, index: number, list: this) => void, thisArg?: U): void;
+        filter <U = this>(callbackfn: (this: U, value: T, index: number, list: this) => boolean, thisArg?: U): List<T>;
+        slice(start?: number, end?: number): T[];
+    }
+}
diff --git a/types/fast-list/tsconfig.json b/types/fast-list/tsconfig.json
new file mode 100644
index 0000000000..a639b60ffe
--- /dev/null
+++ b/types/fast-list/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-list-tests.ts"
+    ]
+}
diff --git a/types/fast-list/tslint.json b/types/fast-list/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/fast-list/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }