Store the JSDefinitions in a custom platform SJSPlatform.

This required the ability to instantiate a different `Platform`
depending on settings, which, in turn, required to defer the
initialization of `ContextBase.platform`.

1 files changed, 13 insertions, 0 deletions

diff --git a/src/dotty/tools/dotc/config/SJSPlatform.scala b/src/dotty/tools/dotc/config/SJSPlatform.scala
new file mode 100644
index 000000000..fec9c25a1
--- /dev/null
+++ b/src/dotty/tools/dotc/config/SJSPlatform.scala
@@ -0,0 +1,13 @@
+package dotty.tools.dotc.config
+
+import dotty.tools.dotc.core._
+import Contexts._
+
+import dotty.tools.backend.sjs.JSDefinitions
+
+class SJSPlatform()(implicit ctx: Context) extends JavaPlatform {
+
+  /** Scala.js-specific definitions. */
+  val jsDefinitions: JSDefinitions = new JSDefinitions()
+
+}