out-of-your-element/matrix/read-registration.js

// @ts-check

const fs = require("fs")
const assert = require("assert").strict
const yaml = require("js-yaml")

/** @ts-ignore @type {import("../types").AppServiceRegistrationConfig} */
const reg = yaml.load(fs.readFileSync("registration.yaml", "utf8"))
reg["ooye"].invite = (reg.ooye.invite || []).filter(mxid => mxid.endsWith(`:${reg.ooye.server_name}`)) // one day I will understand why typescript disagrees with dot notation on this line
assert(reg.ooye.max_file_size)
assert(reg.ooye.namespace_prefix)
assert(reg.ooye.server_name)

module.exports = reg