diff --git a/clang/lib/Format/Format.cpp b/clang/lib/Format/Format.cpp
--- a/clang/lib/Format/Format.cpp
+++ b/clang/lib/Format/Format.cpp
@@ -939,9 +939,9 @@
     GoogleStyle.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty;
     GoogleStyle.AlwaysBreakBeforeMultilineStrings = false;
     GoogleStyle.BreakBeforeTernaryOperators = false;
-    // taze:, triple slash directives (`/// <...`), @see, which is commonly
-    // followed by overlong URLs.
-    GoogleStyle.CommentPragmas = "(taze:|^/[ \t]*<|@see)";
+    // taze:, triple slash directives (`/// <...`), tslint:, and @see, which is
+    // commonly followed by overlong URLs.
+    GoogleStyle.CommentPragmas = "(taze:|^/[ \t]*<|tslint:|@see)";
     GoogleStyle.MaxEmptyLinesToKeep = 3;
     GoogleStyle.NamespaceIndentation = FormatStyle::NI_All;
     GoogleStyle.SpacesInContainerLiterals = false;
diff --git a/clang/unittests/Format/FormatTestJS.cpp b/clang/unittests/Format/FormatTestJS.cpp
--- a/clang/unittests/Format/FormatTestJS.cpp
+++ b/clang/unittests/Format/FormatTestJS.cpp
@@ -2168,6 +2168,38 @@
                    getGoogleJSStyleWithColumns(20)));
 }
 
+TEST_F(FormatTestJS, TslintComments) {
+  // tslint uses pragma comments that must be on their own line.
+  verifyFormat("// Comment that needs wrapping. Comment that needs wrapping. "
+               "Comment that needs\n"
+               "// wrapping. Trailing line.\n"
+               "// tslint:disable-next-line:must-be-on-own-line",
+               "// Comment that needs wrapping. Comment that needs wrapping. "
+               "Comment that needs wrapping.\n"
+               "// Trailing line.\n"
+               "// tslint:disable-next-line:must-be-on-own-line");
+}
+
+TEST_F(FormatTestJS, TscComments) {
+  // As above, @ts-ignore and @ts-check comments must be on their own line.
+  verifyFormat("// Comment that needs wrapping. Comment that needs wrapping. "
+               "Comment that needs\n"
+               "// wrapping. Trailing line.\n"
+               "// @ts-ignore",
+               "// Comment that needs wrapping. Comment that needs wrapping. "
+               "Comment that needs wrapping.\n"
+               "// Trailing line.\n"
+               "// @ts-ignore");
+  verifyFormat("// Comment that needs wrapping. Comment that needs wrapping. "
+               "Comment that needs\n"
+               "// wrapping. Trailing line.\n"
+               "// @ts-check",
+               "// Comment that needs wrapping. Comment that needs wrapping. "
+               "Comment that needs wrapping.\n"
+               "// Trailing line.\n"
+               "// @ts-check");
+}
+
 TEST_F(FormatTestJS, RequoteStringsSingle) {
   verifyFormat("var x = 'foo';", "var x = \"foo\";");
   verifyFormat("var x = 'fo\\'o\\'';", "var x = \"fo'o'\";");