username sanitisation for registration

matrix/api.js

@@ -0,0 +1,20 @@
+// @ts-check
+
+const passthrough = require("../passthrough")
+const { discord, sync, db } = passthrough
+/** @type {import("./mreq")} */
+const mreq = sync.require("./mreq")
+/** @type {import("./file")} */
+const file = sync.require("./file")
+
+/**
+ * @returns {Promise<import("../types").R.Registered>}
+ */
+function register(username) {
+   return mreq.mreq("POST", "/client/v3/register", {
+      type: "m.login.application_service",
+      username
+   })
+}
+
+module.exports.register = register