diff --git a/types/htmlbars-inline-precompile/htmlbars-inline-precompile-tests.ts b/types/htmlbars-inline-precompile/htmlbars-inline-precompile-tests.ts
new file mode 100644
index 0000000000..c8adb26d1a
--- /dev/null
+++ b/types/htmlbars-inline-precompile/htmlbars-inline-precompile-tests.ts
@@ -0,0 +1,5 @@
+import hbs from 'htmlbars-inline-precompile';
+
+const likeThisDotRender = (s: string | string[]) => {};
+
+likeThisDotRender(hbs`this is allowed`);
diff --git a/types/htmlbars-inline-precompile/index.d.ts b/types/htmlbars-inline-precompile/index.d.ts
new file mode 100644
index 0000000000..ab4bf9a1b7
--- /dev/null
+++ b/types/htmlbars-inline-precompile/index.d.ts
@@ -0,0 +1,16 @@
+// Type definitions for htmlbars-inline-precompile 1.0
+// Project: https://github.com/ember-cli/ember-cli-htmlbars-inline-precompile
+// Definitions by: Chris Krycho <https://github.com/chriskrycho>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+// This is a bit of a funky one: it's from a [Babel plugin], but is exported for
+// Ember applications as the module `"htmlbars-inline-precompile"`. It acts
+// like a tagged string from the perspective of consumers, but is actually an
+// AST transformation which generates a function as its output. That function in
+// turn [generates a string or array of strings][output] to use with the Ember
+// testing helper `this.render()`.
+//
+// [Babel plugin]: https://github.com/ember-cli/babel-plugin-htmlbars-inline-precompile#babel-plugin-htmlbars-inline-precompile-
+// [output]: https://github.com/emberjs/ember-test-helpers/blob/77f9a53da9d8c19a85b3122788caadbcc59274c2/lib/ember-test-helpers/-legacy-overrides.js#L17-L42
+
+export default function hbs(tagged: TemplateStringsArray): string | string[];
diff --git a/types/htmlbars-inline-precompile/tsconfig.json b/types/htmlbars-inline-precompile/tsconfig.json
new file mode 100644
index 0000000000..32ad3d22fb
--- /dev/null
+++ b/types/htmlbars-inline-precompile/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",
+        "htmlbars-inline-precompile-tests.ts"
+    ]
+}
diff --git a/types/htmlbars-inline-precompile/tslint.json b/types/htmlbars-inline-precompile/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/htmlbars-inline-precompile/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }