diff --git a/.gitignore b/.gitignore
index 4b96477..873998e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@ pnpm-lock.yaml
 package-lock.json
 coverage
 *~
+lib/*.d.ts
 
 # For misc scripts and experiments:
 /gitignored
diff --git a/lib/index.js b/lib/index.js
index 5e6e0f0..132ed82 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -51,94 +51,93 @@ function assertSHSEExists(peer) {
   if (!peer.shse) throw new Error('sync requires secret-handshake-ext')
 }
 
-module.exports = {
-  name: 'sync',
-  manifest: {
-    connect: 'duplex',
-    initiate: 'sync',
-  },
-  permissions: {
-    anonymous: {
-      allow: ['connect'],
-    },
-  },
+/**
+ * @param {Emitter & {
+ *   db: PPPPPDB | null,
+ *   dict: PPPPPDict | null,
+ *   set: PPPPPSet | null,
+ *   goals: PPPPPGoals | null,
+ *   shse: SHSE | null
+ * }} peer
+ * @param {unknown} config
+ */
+function initSync(peer, config) {
+  assertDBExists(peer)
+  assertGoalsExists(peer)
+  assertSHSEExists(peer)
+  const debug = makeDebug(`ppppp:sync`)
+  const algo = new Algorithm(peer)
+
+  const streams = /** @type {Array<SyncStream>} */ ([])
 
   /**
-   * @param {Emitter & {
-   *   db: PPPPPDB | null,
-   *   dict: PPPPPDict | null,
-   *   set: PPPPPSet | null,
-   *   goals: PPPPPGoals | null,
-   *   shse: SHSE | null
-   * }} peer
-   * @param {unknown} config
+   * @param {string} remoteId
+   * @param {boolean} iamClient
    */
-  init(peer, config) {
-    assertDBExists(peer)
-    assertGoalsExists(peer)
+  function createStream(remoteId, iamClient) {
     assertSHSEExists(peer)
-    const debug = makeDebug(`ppppp:sync`)
-    const algo = new Algorithm(peer)
+    assertGoalsExists(peer)
+    // prettier-ignore
+    debug('Opening a stream with remote %s %s', iamClient ? 'server' : 'client', remoteId)
+    const stream = new SyncStream(peer.shse.pubkey, debug, peer.goals, algo)
+    streams.push(stream)
+    return stream
+  }
 
-    const streams = /** @type {Array<SyncStream>} */ ([])
+  /**
+   * @param {{ shse: SHSE, sync: { connect: GetDuplex } }} rpc
+   * @param {boolean} iamClient
+   */
+  function onSyncRPCConnect(rpc, iamClient) {
+    assertSHSEExists(peer)
+    if (rpc.shse.pubkey === peer.shse.pubkey) return // connecting to myself
+    if (!iamClient) return
+    const local = toPull.duplex(createStream(rpc.shse.pubkey, true))
 
-    /**
-     * @param {string} remoteId
-     * @param {boolean} iamClient
-     */
-    function createStream(remoteId, iamClient) {
-      assertSHSEExists(peer)
-      assertGoalsExists(peer)
-      // prettier-ignore
-      debug('Opening a stream with remote %s %s', iamClient ? 'server' : 'client', remoteId)
-      const stream = new SyncStream(peer.shse.pubkey, debug, peer.goals, algo)
-      streams.push(stream)
-      return stream
-    }
-
-    /**
-     * @param {{ shse: SHSE, sync: { connect: GetDuplex } }} rpc
-     * @param {boolean} iamClient
-     */
-    function onSyncRPCConnect(rpc, iamClient) {
-      assertSHSEExists(peer)
-      if (rpc.shse.pubkey === peer.shse.pubkey) return // connecting to myself
-      if (!iamClient) return
-      const local = toPull.duplex(createStream(rpc.shse.pubkey, true))
-
-      let abort = /** @type {CallableFunction | null} */ (null)
-      const remote = rpc.sync.connect((networkError) => {
-        if (networkError && getSeverity(networkError) >= 3) {
-          if (isMuxrpcMissingError(networkError, 'sync', 'connect')) {
-            debug('peer %s does not support sync', rpc.shse.pubkey)
-            // } else if (isReconnectedError(networkError)) { // TODO: bring back
-            // Do nothing, this is a harmless error
-          } else {
-            console.error(`rpc.sync.connect exception:`, networkError)
-          }
-          abort?.(true, () => {})
+    let abort = /** @type {CallableFunction | null} */ (null)
+    const remote = rpc.sync.connect((networkError) => {
+      if (networkError && getSeverity(networkError) >= 3) {
+        if (isMuxrpcMissingError(networkError, 'sync', 'connect')) {
+          debug('peer %s does not support sync', rpc.shse.pubkey)
+          // } else if (isReconnectedError(networkError)) { // TODO: bring back
+          // Do nothing, this is a harmless error
+        } else {
+          console.error(`rpc.sync.connect exception:`, networkError)
         }
-      })
-      abort = pull(local, remote, local)
-    }
-    peer.on('rpc:connect', onSyncRPCConnect)
-
-    /**
-     * @this {{shse: {pubkey: string}}}
-     */
-    function connect() {
-      return toPull.duplex(createStream(this.shse.pubkey, false))
-    }
-
-    function start() {
-      for (const stream of streams) {
-        stream.initiate()
+        abort?.(true, () => {})
       }
-    }
+    })
+    abort = pull(local, remote, local)
+  }
+  peer.on('rpc:connect', onSyncRPCConnect)
 
-    return {
-      connect,
-      start,
+  /**
+   * @this {{shse: {pubkey: string}}}
+   */
+  function connect() {
+    return toPull.duplex(createStream(this.shse.pubkey, false))
+  }
+
+  function start() {
+    for (const stream of streams) {
+      stream.initiate()
     }
+  }
+
+  return {
+    connect,
+    start,
+  }
+}
+
+exports.name = 'sync'
+exports.manifest = {
+  connect: 'duplex',
+  initiate: 'sync',
+}
+exports.init = initSync
+exports.permissions = {
+  anonymous: {
+    allow: ['connect'],
   },
 }
diff --git a/package.json b/package.json
index 62638d8..8a31e02 100644
--- a/package.json
+++ b/package.json
@@ -11,8 +11,7 @@
   },
   "main": "index.js",
   "files": [
-    "*.js",
-    "lib/*.js"
+    "lib/**"
   ],
   "exports": {
     ".": {