diff --git a/tests/baselines/reference/declarationEmit_readonly.js b/tests/baselines/reference/declarationEmit_readonly.js
new file mode 100644
index 00000000000..4925e5dafae
--- /dev/null
+++ b/tests/baselines/reference/declarationEmit_readonly.js
@@ -0,0 +1,20 @@
+//// [declarationEmit_readonly.ts]
+
+class C {
+    constructor(readonly x: number) {}
+}
+
+//// [declarationEmit_readonly.js]
+var C = (function () {
+    function C(x) {
+        this.x = x;
+    }
+    return C;
+}());
+
+
+//// [declarationEmit_readonly.d.ts]
+declare class C {
+    readonly x: number;
+    constructor(x: number);
+}
diff --git a/tests/baselines/reference/declarationEmit_readonly.symbols b/tests/baselines/reference/declarationEmit_readonly.symbols
new file mode 100644
index 00000000000..eadb7dc3ddf
--- /dev/null
+++ b/tests/baselines/reference/declarationEmit_readonly.symbols
@@ -0,0 +1,8 @@
+=== tests/cases/conformance/classes/constructorDeclarations/constructorParameters/declarationEmit_readonly.ts ===
+
+class C {
+>C : Symbol(C, Decl(declarationEmit_readonly.ts, 0, 0))
+
+    constructor(readonly x: number) {}
+>x : Symbol(C.x, Decl(declarationEmit_readonly.ts, 2, 16))
+}
diff --git a/tests/baselines/reference/declarationEmit_readonly.types b/tests/baselines/reference/declarationEmit_readonly.types
new file mode 100644
index 00000000000..3036c234ae5
--- /dev/null
+++ b/tests/baselines/reference/declarationEmit_readonly.types
@@ -0,0 +1,8 @@
+=== tests/cases/conformance/classes/constructorDeclarations/constructorParameters/declarationEmit_readonly.ts ===
+
+class C {
+>C : C
+
+    constructor(readonly x: number) {}
+>x : number
+}
diff --git a/tests/cases/conformance/classes/constructorDeclarations/constructorParameters/declarationEmit_readonly.ts b/tests/cases/conformance/classes/constructorDeclarations/constructorParameters/declarationEmit_readonly.ts
new file mode 100644
index 00000000000..76b41eabba4
--- /dev/null
+++ b/tests/cases/conformance/classes/constructorDeclarations/constructorParameters/declarationEmit_readonly.ts
@@ -0,0 +1,5 @@
+// @declaration: true
+
+class C {
+    constructor(readonly x: number) {}
+}
\ No newline at end of file