chore: migrate code to ESM (#73)

node_modules/undici/lib/core/symbols.js

@@ -1,53 +0,0 @@
-module.exports = {
-  kClose: Symbol('close'),
-  kDestroy: Symbol('destroy'),
-  kDispatch: Symbol('dispatch'),
-  kUrl: Symbol('url'),
-  kWriting: Symbol('writing'),
-  kResuming: Symbol('resuming'),
-  kQueue: Symbol('queue'),
-  kConnect: Symbol('connect'),
-  kConnecting: Symbol('connecting'),
-  kHeadersList: Symbol('headers list'),
-  kKeepAliveDefaultTimeout: Symbol('default keep alive timeout'),
-  kKeepAliveMaxTimeout: Symbol('max keep alive timeout'),
-  kKeepAliveTimeoutThreshold: Symbol('keep alive timeout threshold'),
-  kKeepAliveTimeoutValue: Symbol('keep alive timeout'),
-  kKeepAlive: Symbol('keep alive'),
-  kHeadersTimeout: Symbol('headers timeout'),
-  kBodyTimeout: Symbol('body timeout'),
-  kServerName: Symbol('server name'),
-  kHost: Symbol('host'),
-  kNoRef: Symbol('no ref'),
-  kBodyUsed: Symbol('used'),
-  kRunning: Symbol('running'),
-  kBlocking: Symbol('blocking'),
-  kPending: Symbol('pending'),
-  kSize: Symbol('size'),
-  kBusy: Symbol('busy'),
-  kQueued: Symbol('queued'),
-  kFree: Symbol('free'),
-  kConnected: Symbol('connected'),
-  kClosed: Symbol('closed'),
-  kNeedDrain: Symbol('need drain'),
-  kReset: Symbol('reset'),
-  kDestroyed: Symbol('destroyed'),
-  kMaxHeadersSize: Symbol('max headers size'),
-  kRunningIdx: Symbol('running index'),
-  kPendingIdx: Symbol('pending index'),
-  kError: Symbol('error'),
-  kClients: Symbol('clients'),
-  kClient: Symbol('client'),
-  kParser: Symbol('parser'),
-  kOnDestroyed: Symbol('destroy callbacks'),
-  kPipelining: Symbol('pipelinig'),
-  kSocket: Symbol('socket'),
-  kHostHeader: Symbol('host header'),
-  kConnector: Symbol('connector'),
-  kStrictContentLength: Symbol('strict content length'),
-  kMaxRedirections: Symbol('maxRedirections'),
-  kMaxRequests: Symbol('maxRequestsPerClient'),
-  kProxy: Symbol('proxy agent options'),
-  kCounter: Symbol('socket request counter'),
-  kInterceptors: Symbol('dispatch interceptors')
-}