chore: release version v0.13.9

Tell Typescript that `isPeerId(id)` returns true if, and only if, `id` is of type `PeerId`.

See https://www.typescriptlang.org/docs/handbook/advanced-types.html#using-type-predicates

CHANGELOG.md

@@ -1,3 +1,8 @@
+<a name="0.13.9"></a>
+## [0.13.9](https://github.com/libp2p/js-peer-id/compare/v0.13.8...v0.13.9) (2020-02-19)
+
+
+
 <a name="0.13.8"></a>
 ## [0.13.8](https://github.com/libp2p/js-peer-id/compare/v0.13.6...v0.13.8) (2020-02-18)
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "peer-id",
-  "version": "0.13.8",
+  "version": "0.13.9",
   "description": "IPFS Peer Id implementation in Node.js",
   "leadMaintainer": "Vasco Santos <santos.vasco10@gmail.com>",
   "main": "src/index.js",
@@ -74,6 +74,7 @@
     "Prashanth Chandra <coolshanth94@gmail.com>",
     "Richard Littauer <richard.littauer@gmail.com>",
     "Richard Schneider <makaretu@gmail.com>",
+    "Robert Kiel <robert.kiel@validitylabs.org>",
     "Stephen Whitmore <stephen.whitmore@gmail.com>",
     "Topper Bowers <topper@quorumcontrol.com>",
     "Vasco Santos <vasco.santos@moxy.studio>",

src/index.d.ts

@@ -38,7 +38,7 @@ declare namespace PeerId {
    * Checks if a value is an instance of PeerId.
    * @param id The value to check.
    */
-  function isPeerId(id: any): boolean
+  function isPeerId(id: any): id is PeerId
 
   /**
    * Create a new PeerId.
@@ -105,7 +105,7 @@ declare class PeerId {
   /**
    * Raw id.
    */
-  id: Buffer;
+  readonly id: Buffer;
 
   /**
    * Private key.