diff --git a/tests/baselines/reference/outfile-concat.js b/tests/baselines/reference/outfile-concat.js
new file mode 100644
index 00000000000..e3e5aa3d5f0
--- /dev/null
+++ b/tests/baselines/reference/outfile-concat.js
@@ -0,0 +1,26 @@
+var s = "Hello, world";
+console.log(s);
+console.log(f());
+function f() {
+    return "JS does hoists";
+}
+//# sourceMappingURL=first-output.js.map
+var N;
+(function (N) {
+    function f() {
+        console.log('testing');
+    }
+    f();
+})(N || (N = {}));
+var C = (function () {
+    function C() {
+    }
+    C.prototype.doSomething = function () {
+        console.log("something got done");
+    };
+    return C;
+}());
+//# sourceMappingURL=second-output.js.map
+var c = new C();
+c.doSomething();
+//# sourceMappingURL=third-output.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/outfile-concat.js.map b/tests/baselines/reference/outfile-concat.js.map
new file mode 100644
index 00000000000..f8220832b2a
--- /dev/null
+++ b/tests/baselines/reference/outfile-concat.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"third-output.js","sections":[{"offset":{"line":0,"column":0},"map":{"version":3,"file":"first-output.js","sourceRoot":"","sources":["first_part1.ts","first_part2.ts","first_part3.ts"],"names":[],"mappings":"AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACVf,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB;IACI,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}},{"offset":{"line":7,"column":0},"map":{"version":3,"file":"second-output.js","sourceRoot":"","sources":["second_part1.ts","second_part2.ts"],"names":[],"mappings":"AAIA,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP;QACI,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;ACVD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC"}},{"offset":{"line":22,"column":41},"map":{"version":3,"file":"third-output.js","sourceRoot":"","sources":["third_part1.ts"],"names":[],"mappings":";AAAA,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC"}}]}
\ No newline at end of file