From 867b8299652464a4301e12bd71b96065e7306c13 Mon Sep 17 00:00:00 2001
From: Dan Harper <intouch@danharper.me>
Date: Tue, 10 Jan 2017 18:42:03 +0000
Subject: [PATCH] Print Flow types with no name (fixes #38)

---
 src/printer.js                                  | 4 ++--
 tests/prettier/__snapshots__/jsfmt.spec.js.snap | 9 +++++++++
 tests/prettier/jsfmt.spec.js                    | 1 +
 tests/prettier/optional-type-name.js            | 3 +++
 4 files changed, 15 insertions(+), 2 deletions(-)
 create mode 100644 tests/prettier/__snapshots__/jsfmt.spec.js.snap
 create mode 100644 tests/prettier/jsfmt.spec.js
 create mode 100644 tests/prettier/optional-type-name.js

diff --git a/src/printer.js b/src/printer.js
index 6e71a04e..c4092565 100644
--- a/src/printer.js
+++ b/src/printer.js
@@ -1329,7 +1329,7 @@ function genericPrintNoParens(path, options, print) {
     return concat([
       path.call(print, "name"),
       n.optional ? "?" : "",
-      ": ",
+      n.name ? ": " : "",
       path.call(print, "typeAnnotation")
     ]);
   case "GenericTypeAnnotation":
@@ -1399,7 +1399,7 @@ function genericPrintNoParens(path, options, print) {
       variance,
       "[",
       path.call(print, "id"),
-      ": ",
+      n.id ? ": " : "",
       path.call(print, "key"),
       "]: ",
       path.call(print, "value")
diff --git a/tests/prettier/__snapshots__/jsfmt.spec.js.snap b/tests/prettier/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 00000000..a1221a5a
--- /dev/null
+++ b/tests/prettier/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,9 @@
+exports[`test optional-type-name.js 1`] = `
+"type Foo = (any) => string
+
+type Bar = { [string]: number }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+type Foo = (any) => string;
+
+type Bar = { [string]: number };"
+`;
diff --git a/tests/prettier/jsfmt.spec.js b/tests/prettier/jsfmt.spec.js
new file mode 100644
index 00000000..989047bc
--- /dev/null
+++ b/tests/prettier/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname);
diff --git a/tests/prettier/optional-type-name.js b/tests/prettier/optional-type-name.js
new file mode 100644
index 00000000..fb40895a
--- /dev/null
+++ b/tests/prettier/optional-type-name.js
@@ -0,0 +1,3 @@
+type Foo = (any) => string
+
+type Bar = { [string]: number }