Add types for mem-fs

types/mem-fs/index.d.ts

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+// Type definitions for mem-fs 1.1
+// Project: https://github.com/SBoudrias/mem-fs
+// Definitions by: My Food Bag <https://github.com/MyFoodBag>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/// <reference types="node" />
+
+import events = require('events');
+import stream = require('stream');
+import File = require('vinyl');
+
+declare namespace FileSystem {
+    interface Store extends events.EventEmitter {
+        add: (file: File, content: string) => void;
+        each: (callback: (file: File, index: number) => void) => void;
+        get: (filepath: string) => File;
+        stream: () => stream.Transform;
+    }
+
+    export function create(): Store;
+}
+
+export = FileSystem;

types/mem-fs/test/index.ts

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+import * as fs from 'mem-fs';
+
+const store = fs.create();
+const file = store.get('hello');
+
+store.add(file, 'hahahahah');

types/mem-fs/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",
+        "test/index.ts"
+    ]
+}

types/mem-fs/tslint.json

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+{
+    "extends": "dtslint/dt.json",
+    "rules": {
+        "export-just-namespace": false,
+        "strict-export-declare-modifiers": false
+    }
+}