Add flags argument and switch to amd modules by default.

See microsoft/TypeScript#1544 for more
information on why --out was unacceptable with modules.

examples/walkthrough/flags/BUILD

@@ -0,0 +1,19 @@
+load("//typescript:def.bzl", "ts_binary", "ts_library")
+
+ts_library(
+    name = "lib",
+    srcs = [
+      "animal.ts",
+      "main.ts",
+    ]
+)
+
+ts_binary(
+    name = "flags",
+    flags = [
+        "--noImplicitAny",
+    ],
+    deps = [
+        ":lib",
+    ]
+)

examples/walkthrough/flags/animal.ts

@@ -0,0 +1,8 @@
+// Sample inheritance in typescript.
+export default class {
+  constructor(public name: string) { }
+
+  sound(sound: string) {
+    return this.name + " goes " + sound;
+  }
+}

examples/walkthrough/flags/main.ts

@@ -0,0 +1,17 @@
+// Sample inheritance in typescript.
+import Animal from './animal'
+
+module Rescue {
+  export class Dog extends Animal {
+    constructor(name: string) {
+      super(name);
+    }
+
+    sound() {
+      return "My dog " + super.sound("bark!");
+    }
+  }
+}
+
+let c = new Rescue.Dog("Colby");
+c.sound();

typescript/def.bzl

@@ -20,6 +20,9 @@ def ts_binary_impl(ctx):
       inputs=files,
       outputs=[output],
       executable=ctx.executable.tsc_,
+      env={
+          "FLAGS": ' '.join(ctx.attr.flags),
+      },
       arguments=["%s" % (output.path)] + \
           ["%s" % x.path for x in files])
 
@@ -40,6 +43,7 @@ ts_binary = rule(
             executable=True),
         "deps": attr.label_list(allow_files=True),
         "srcs": attr.label_list(allow_files=ts_filetype),
+        "flags": attr.string_list(),
     },
     outputs = {
         "out": "%{name}.js"

typescript/run.sh

@@ -21,5 +21,5 @@ for var in "$@"; do
   args+=("$(pwd)/${var}")
 done
 
-$NAR exec "--out ${args[*]}"
+$NAR exec "--module amd ${FLAGS} --outFile ${args[*]}"
 touch .tsc_unlock