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package scala.scalajs.tools.env
trait ComJSRunner extends AsyncJSRunner {
/** Send a message to the JS VM. Throws if the message cannot be sent. */
def send(msg: String): Unit
/** Block until a message is received. Throws a [[ComClosedExcpetion]]
* if the channel is closed before a message is received.
*/
def receive(): String
/** Close the communication channel. Allows the VM to terminate if it is
* still waiting for callback. The JVM side **must** call close in
* order to be able to expect termination of the VM.
*
* Calling [[stop]] on a [ComJSRunner]] automatically closes the
* channel.
*/
def close(): Unit
}
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