diff --git a/types/antlr4-autosuggest/antlr4-autosuggest-tests.ts b/types/antlr4-autosuggest/antlr4-autosuggest-tests.ts
new file mode 100644
index 0000000000..bfb55cdfc1
--- /dev/null
+++ b/types/antlr4-autosuggest/antlr4-autosuggest-tests.ts
@@ -0,0 +1,19 @@
+import * as antlr4 from 'antlr4';
+import * as autosuggest from 'antlr4-autosuggest';
+
+class Antlr4JSLexer extends antlr4.Lexer {
+    constructor(chars: antlr4.InputStream) {
+        super();
+    }
+}
+
+class Antlr4JSParser extends antlr4.Parser {
+    constructor(tokens: antlr4.CommonTokenStream) {
+        super(tokens);
+    }
+}
+
+const autosuggester: autosuggest.AutoSuggester = autosuggest.autosuggester(Antlr4JSLexer, Antlr4JSParser);
+const suggestions: string[] = autosuggester.autosuggest('ABC');
+
+const lowercase = autosuggest.autosuggester(Antlr4JSLexer, Antlr4JSParser, 'LOWER');
diff --git a/types/antlr4-autosuggest/index.d.ts b/types/antlr4-autosuggest/index.d.ts
new file mode 100644
index 0000000000..c050c25761
--- /dev/null
+++ b/types/antlr4-autosuggest/index.d.ts
@@ -0,0 +1,18 @@
+// Type definitions for antlr4-autosuggest 0.0
+// Project: https://github.com/oranoran/antlr4-autosuggest-js
+// Definitions by: Jon Freedman <https://github.com/jonfreedman>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+import * as antlr4 from 'antlr4';
+
+export type CasePreference = 'LOWER' | 'UPPER' | 'BOTH';
+
+export interface AutoSuggester {
+    autosuggest: (inputText: string) => string[];
+}
+
+export interface Constructor<T> {
+    new (...args: any[]): T;
+}
+
+export function autosuggester<Lexer extends antlr4.Lexer, Parser extends antlr4.Parser>(lexerCtr: Constructor<Lexer>, parserCtr: Constructor<Parser>, casePref?: CasePreference | null): AutoSuggester;
diff --git a/types/antlr4-autosuggest/tsconfig.json b/types/antlr4-autosuggest/tsconfig.json
new file mode 100644
index 0000000000..5e7898c616
--- /dev/null
+++ b/types/antlr4-autosuggest/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",
+        "antlr4-autosuggest-tests.ts"
+    ]
+}
diff --git a/types/antlr4-autosuggest/tslint.json b/types/antlr4-autosuggest/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/antlr4-autosuggest/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }