diff --git a/closure/compiler/closure_js_library.bzl b/closure/compiler/closure_js_library.bzl
index aedb0f394d..cebc6b5bbd 100644
--- a/closure/compiler/closure_js_library.bzl
+++ b/closure/compiler/closure_js_library.bzl
@@ -367,12 +367,12 @@ def _closure_js_library_impl(
     )
 
 def _closure_js_library(ctx):
-    if not ctx.files.srcs and not ctx.files.externs and not ctx.attr.exports:
-        fail("Either 'srcs' or 'exports' must be specified")
+    if not ctx.files.srcs and not ctx.files.externs and not ctx.attr.exports and not ctx.attr.ts_lib:
+        fail("Either 'srcs', 'exports', or 'ts_lib' must be specified")
     if not ctx.files.srcs and ctx.attr.deps:
         fail("'srcs' must be set when using 'deps', otherwise consider 'exports'")
-    if not ctx.files.srcs and (ctx.attr.suppress or ctx.attr.lenient):
-        fail("'srcs' must be set when using 'suppress' or 'lenient'")
+    if not (ctx.files.srcs or ctx.attr.ts_lib) and (ctx.attr.suppress or ctx.attr.lenient):
+        fail("Either 'srcs' or 'ts_lib' must be set when using 'suppress' or 'lenient'")
     if ctx.attr.language:
         print("The closure_js_library 'language' attribute is now removed and " +
               "is always set to " + JS_LANGUAGE_IN)
@@ -383,14 +383,26 @@ def _closure_js_library(ctx):
         print("closure_js_library 'externs' is deprecated; just use 'srcs'")
         srcs = ctx.files.externs + srcs
 
+    deps = ctx.attr.deps
+    suppress = ctx.attr.suppress
+
+    # Wrapper around a ts_library. It's  like creating a closure_js_library with 
+    # the runtime_deps of the ts_library, and the srcs are the tsickle outputs from 
+    # the ts_library.
+    if ctx.attr.ts_lib:
+        srcs = srcs + ctx.attr.ts_lib.typescript.transitive_es6_sources.to_list()
+        # Note that we need to modify deps before calling unfurl below for exports to work.
+        deps = deps + ctx.attr.ts_lib.typescript.runtime_deps.to_list()
+        suppress = suppress + ["checkTypes", "strictCheckTypes", "reportUnknownTypes", "analyzerChecks", "JSC_EXTRA_REQUIRE_WARNING"]
+
     library = _closure_js_library_impl(
         ctx.actions,
         ctx.label,
         ctx.workspace_name,
         srcs,
-        ctx.attr.deps,
+        deps,
         ctx.attr.testonly,
-        ctx.attr.suppress,
+        suppress,
         ctx.attr.lenient,
         ctx.files._closure_library_base,
         ctx.executable._ClosureWorker,
@@ -418,7 +430,7 @@ def _closure_js_library(ctx):
             transitive_files = (depset([] if ctx.attr.no_closure_library else ctx.files._closure_library_base) |
                                 collect_runfiles(
                                     unfurl(
-                                        ctx.attr.deps,
+                                        deps+ctx.attr.exports,
                                         provider = "closure_js_library",
                                     ),
                                 ) |
@@ -448,6 +460,9 @@ closure_js_library = rule(
         "srcs": attr.label_list(allow_files = JS_FILE_TYPE),
         "suppress": attr.string_list(),
         "lenient": attr.bool(),
+        "ts_lib": attr.label(
+            providers = ["typescript"],
+        ),
 
         # deprecated
         "externs": attr.label_list(allow_files = JS_FILE_TYPE),
diff --git a/closure/compiler/test/typescript/BUILD b/closure/compiler/test/typescript/BUILD
new file mode 100644
index 0000000000..149a368e8d
--- /dev/null
+++ b/closure/compiler/test/typescript/BUILD
@@ -0,0 +1,101 @@
+# Copyright 2018 The Closure Rules Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+package(default_testonly = True)
+
+licenses(["notice"])  # Apache 2.0
+
+load("//closure/private:file_test.bzl", "file_test")
+load("//closure:defs.bzl", "closure_js_binary")
+load("//closure:defs.bzl", "closure_js_library")
+load(":fake_ts_library.bzl", "fake_ts_library")
+
+fake_ts_library(
+    name = "a",
+    srcs = ["a.js"],
+)
+
+fake_ts_library(
+    name = "b",
+    srcs = ["b.js"],
+    deps = [":a"],
+)
+
+closure_js_library(
+    name = "b_js",
+    ts_lib = ":b",
+)
+
+closure_js_library(
+    name = "c",
+    srcs = ["c.js"],
+    deps = [":b_js"],
+)
+
+file_test(
+    name = "c_noWarnings",
+    content = "",
+    file = "c-stderr.txt",
+)
+
+file_test(
+    name = "b_js_noWarnings",
+    content = "",
+    file = "b_js-stderr.txt",
+)
+
+closure_js_binary(
+    name = "c_bin",
+    entry_points = ["c"],
+    deps = ["c"],
+)
+
+file_test(
+    name = "c_bin_noWarnings",
+    content = "",
+    file = "c_bin-stderr.txt",
+)
+
+fake_ts_library(
+    name = "ts_closure",
+    runtime_deps = ["//closure/library"],
+)
+
+fake_ts_library(
+    name = "use_closure",
+    srcs = ["use_closure.js"],
+    deps = ["ts_closure"],
+)
+
+closure_js_library(
+    name = "use_closure_js",
+    ts_lib = "use_closure",
+)
+
+closure_js_binary(
+    name = "use_closure_bin",
+    deps = ["use_closure_js"],
+)
+
+file_test(
+    name = "use_closure_js_noWarnings",
+    content = "",
+    file = "use_closure_js-stderr.txt",
+)
+
+file_test(
+    name = "use_closure_bin_noWarnings",
+    content = "",
+    file = "use_closure_bin-stderr.txt",
+)
diff --git a/closure/compiler/test/typescript/a.js b/closure/compiler/test/typescript/a.js
new file mode 100644
index 0000000000..64d6b52697
--- /dev/null
+++ b/closure/compiler/test/typescript/a.js
@@ -0,0 +1,23 @@
+// Copyright 2016 The Closure Rules Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+goog.provide('a');
+
+
+/**
+ * Function A.
+ */
+a.a = function() {
+  console.log('a');
+};
diff --git a/closure/compiler/test/typescript/b.js b/closure/compiler/test/typescript/b.js
new file mode 100644
index 0000000000..f121b59c9e
--- /dev/null
+++ b/closure/compiler/test/typescript/b.js
@@ -0,0 +1,26 @@
+// Copyright 2016 The Closure Rules Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+goog.provide('b');
+
+goog.require('a');
+
+
+/**
+ * Function B.
+ */
+b.b = function() {
+  a.a();
+  console.log('b');
+};
diff --git a/closure/compiler/test/typescript/c.js b/closure/compiler/test/typescript/c.js
new file mode 100644
index 0000000000..fb1f5774b8
--- /dev/null
+++ b/closure/compiler/test/typescript/c.js
@@ -0,0 +1,28 @@
+// Copyright 2016 The Closure Rules Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+goog.provide('c');
+
+goog.require('b');
+
+
+/**
+ * Function C.
+ */
+c.c = function() {
+  b.b();
+  console.log('c');
+};
+
+goog.exportSymbol('test.c',c.c);
\ No newline at end of file
diff --git a/closure/compiler/test/typescript/fake_ts_library.bzl b/closure/compiler/test/typescript/fake_ts_library.bzl
new file mode 100644
index 0000000000..f8506f3643
--- /dev/null
+++ b/closure/compiler/test/typescript/fake_ts_library.bzl
@@ -0,0 +1,43 @@
+# Copyright 2018 The Closure Rules Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+def _fake_ts_library(ctx):
+    return struct(typescript=struct(
+        es6_sources=depset(ctx.files.srcs),
+        transitive_es6_sources=depset(
+            ctx.files.srcs,
+            transitive=[d.typescript.transitive_es6_sources for d in ctx.attr.deps]),
+        declarations=depset(),
+        runtime_deps=depset(
+            ctx.attr.runtime_deps,
+            transitive=[d.typescript.runtime_deps for d in ctx.attr.deps]),
+    ),
+    internal_expect_failure=ctx.attr.internal_expect_failure)
+
+fake_ts_library = rule(
+    attrs = {
+        "srcs": attr.label_list(allow_files = True),
+        "deps": attr.label_list(providers = ["typescript"]),
+        "data": attr.label_list(
+            default = [],
+            allow_files = True,
+            cfg = "data",
+        ),
+        "runtime_deps": attr.label_list(
+            default = [],
+        ),
+        "internal_expect_failure": attr.bool(default = False),
+    },
+    implementation = _fake_ts_library,
+)
diff --git a/closure/compiler/test/typescript/use_closure.js b/closure/compiler/test/typescript/use_closure.js
new file mode 100644
index 0000000000..d99faf8ff0
--- /dev/null
+++ b/closure/compiler/test/typescript/use_closure.js
@@ -0,0 +1,2 @@
+import {TagName} from 'goog:goog.dom';
+console.log(TagName.A);
\ No newline at end of file
diff --git a/closure/private/defs.bzl b/closure/private/defs.bzl
index aee2f5cc25..aa0ec72dcc 100644
--- a/closure/private/defs.bzl
+++ b/closure/private/defs.bzl
@@ -145,6 +145,9 @@ def collect_runfiles(targets):
             data += target.data_runfiles.files
         if hasattr(target, "default_runfiles"):
             data += target.default_runfiles.files
+        if hasattr(target, "closure_js_aspect") and hasattr(target, "typescript"):
+            if hasattr(target.typescript, "transitive_es6_sources"):
+                data += target.typescript.transitive_es6_sources
     return data
 
 def find_js_module_roots(srcs, workspace_name, label, includes):
diff --git a/closure/repositories.bzl b/closure/repositories.bzl
index e25c7a8cd7..3dec9facf0 100644
--- a/closure/repositories.bzl
+++ b/closure/repositories.bzl
@@ -55,6 +55,7 @@ def closure_repositories(
         omit_com_squareup_javapoet = False,
         omit_fonts_noto_hinted_deb = False,
         omit_fonts_noto_mono_deb = False,
+        omit_io_angular_clutz=False,
         omit_javax_annotation_jsr250_api = False,
         omit_javax_inject = False,
         omit_libexpat_amd64_deb = False,
@@ -140,6 +141,8 @@ def closure_repositories(
         fonts_noto_hinted_deb()
     if not omit_fonts_noto_mono_deb:
         fonts_noto_mono_deb()
+    if not omit_io_angular_clutz:
+        io_angular_clutz()
     if not omit_javax_annotation_jsr250_api:
         javax_annotation_jsr250_api()
     if not omit_javax_inject:
@@ -693,7 +696,7 @@ def com_google_protobuf_js():
         ],
         sha256 = "2244b0308846bb22b4ff0bcc675e99290ff9f1115553ae9671eba1030af31bc0",
         strip_prefix = "protobuf-3.6.1.2/js",
-        patches = ["//closure:patch_protobuf.patch"],
+        patches = ["@io_bazel_rules_closure//closure:patch_protobuf.patch"],
         patch_args = ["-p1"],
         build_file = str(Label("//closure/protobuf:protobuf_js.BUILD")),
     )
@@ -796,6 +799,18 @@ def fonts_noto_mono_deb():
         sha256 = "71ff715cf50a74a8cc11b02e7c906b69a242d3d677e739e0b2d18cd23b7de375",
     )
 
+def io_angular_clutz():
+  http_archive(
+    name = "io_angular_clutz",
+    build_file = str(Label("//third_party/clutz:clutz.BUILD")),
+    sha256 = "7a5c785dbcc3ae0daa1fcf4507de6a23bbecdb2bf80460651e4c2b88c1ad7582",
+    strip_prefix = "clutz-7f1a3ee9ad9f85a9056084dc039496bbd35e11f6",
+    urls = [
+        "https://mirror.bazel.build/github.com/angular/clutz/archive/7f1a3ee9ad9f85a9056084dc039496bbd35e11f6.tar.gz",  # 2017-11-02
+        "https://github.com/angular/clutz/archive/7f1a3ee9ad9f85a9056084dc039496bbd35e11f6.tar.gz",
+    ],
+  )
+
 def javax_annotation_jsr250_api():
     java_import_external(
         name = "javax_annotation_jsr250_api",
diff --git a/third_party/clutz/BUILD b/third_party/clutz/BUILD
new file mode 100644
index 0000000000..b0968f5aa7
--- /dev/null
+++ b/third_party/clutz/BUILD
@@ -0,0 +1,5 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])  # MIT
+
+exports_files(["clutz.BUILD","externs.js"])
\ No newline at end of file
diff --git a/third_party/clutz/clutz.BUILD b/third_party/clutz/clutz.BUILD
new file mode 100644
index 0000000000..a925915710
--- /dev/null
+++ b/third_party/clutz/clutz.BUILD
@@ -0,0 +1,45 @@
+# Description:
+#   Build tool for making TypeScript .d.ts files from Closure JavaScript.
+
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])  # MIT
+
+exports_files([
+    "LICENSE",
+    "src/resources/closure.lib.d.ts",
+    "src/resources/partial_goog_base.js",
+])
+
+JVM_FLAGS = [
+    "-Xss20m",  # JSCompiler needs big stacks for recursive parsing
+    "-XX:+UseParallelGC",  # Best GC when app isn't latency sensitive
+]
+
+java_binary(
+    name = "clutz",
+    srcs = glob(["src/main/java/com/google/javascript/clutz/**/*.java"]),
+    jvm_flags = JVM_FLAGS,
+    main_class = "com.google.javascript.clutz.DeclarationGenerator",
+    deps = [
+        "@args4j",
+        "@com_google_code_findbugs_jsr305",
+        "@com_google_code_gson",
+        "@com_google_guava",
+        "@com_google_javascript_closure_compiler",
+    ],
+)
+
+java_binary(
+    name = "gents",
+    srcs = glob(["src/main/java/com/google/javascript/gents/**/*.java"]),
+    jvm_flags = JVM_FLAGS,
+    main_class = "com.google.javascript.gents.TypeScriptGenerator",
+    deps = [
+        "@args4j",
+        "@com_google_code_findbugs_jsr305",
+        "@com_google_code_gson",
+        "@com_google_guava",
+        "@com_google_javascript_closure_compiler",
+    ],
+)
diff --git a/third_party/clutz/externs.js b/third_party/clutz/externs.js
new file mode 100644
index 0000000000..4feb06a550
--- /dev/null
+++ b/third_party/clutz/externs.js
@@ -0,0 +1,8 @@
+/**
+ * @fileoverview
+ * @externs needed for incremental clutz.
+ */
+/** @typedef {{then:?}} */
+var Thenable;
+/** @typedef {function(...?):?} */
+var Function;
\ No newline at end of file