diff --git a/src/typescript-ast-nodes.js b/src/typescript-ast-nodes.js
index 77c9d40b..1847bf30 100644
--- a/src/typescript-ast-nodes.js
+++ b/src/typescript-ast-nodes.js
@@ -169,4 +169,7 @@ module.exports = function(fork) {
     .build("expression")
     .field("expression", def("Identifier"))
     .bases("Node");
+
+  def("TSParameterProperty")
+    .build("accessibility", "isReadonly", "parameters")
 };
diff --git a/tests/typescript/conformance/types/parameterProperty/__snapshots__/jsfmt.spec.js.snap b/tests/typescript/conformance/types/parameterProperty/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 00000000..1e7042bc
--- /dev/null
+++ b/tests/typescript/conformance/types/parameterProperty/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,16 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`parameterProperty.ts 1`] = `
+class c3 {
+  constructor(public arg: number = 10) {
+    // fails because of comment
+  }
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+class c3 {
+  constructor(public arg: number = 10) {
+    // fails because of comment
+  }
+}
+
+`;
diff --git a/tests/typescript/conformance/types/parameterProperty/jsfmt.spec.js b/tests/typescript/conformance/types/parameterProperty/jsfmt.spec.js
new file mode 100644
index 00000000..bc085c48
--- /dev/null
+++ b/tests/typescript/conformance/types/parameterProperty/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname, { parser: "typescript" });
diff --git a/tests/typescript/conformance/types/parameterProperty/parameterProperty.ts b/tests/typescript/conformance/types/parameterProperty/parameterProperty.ts
new file mode 100644
index 00000000..0064cb75
--- /dev/null
+++ b/tests/typescript/conformance/types/parameterProperty/parameterProperty.ts
@@ -0,0 +1,5 @@
+class c3 {
+  constructor(public arg: number = 10) {
+    // fails because of comment
+  }
+}