decaffeinate: Rename CommandRunner.coffee and 25 other files from .coffee to .js

app/coffee/Errors.js

@@ -0,0 +1,25 @@
+NotFoundError = (message) ->
+	error = new Error(message)
+	error.name = "NotFoundError"
+	error.__proto__ = NotFoundError.prototype
+	return error
+NotFoundError.prototype.__proto__ = Error.prototype
+
+FilesOutOfSyncError = (message) ->
+	error = new Error(message)
+	error.name = "FilesOutOfSyncError"
+	error.__proto__ = FilesOutOfSyncError.prototype
+	return error
+FilesOutOfSyncError.prototype.__proto__ = Error.prototype
+
+AlreadyCompilingError = (message) ->
+	error = new Error(message)
+	error.name = "AlreadyCompilingError"
+	error.__proto__ = AlreadyCompilingError.prototype
+	return error
+AlreadyCompilingError.prototype.__proto__ = Error.prototype
+
+module.exports = Errors =
+	NotFoundError: NotFoundError
+	FilesOutOfSyncError: FilesOutOfSyncError
+	AlreadyCompilingError: AlreadyCompilingError