refactor: replace deprecated String.prototype.substr() (#2282)

.substr() is deprecated so we replace it with .slice() which works similarily but isn't deprecated

Signed-off-by: Tobias Speicher <rootcommander@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/index.js b/index.js
index 26bf323..31c318b 100644
--- a/index.js
+++ b/index.js
@@ -214,7 +214,7 @@ class WebTorrent extends EventEmitter {
           }
           port.postMessage(chunk)
           if (!chunk) cleanup()
-          if (!this.workerKeepAliveInterval) this.workerKeepAliveInterval = setInterval(() => fetch(`${this.serviceWorker.scriptURL.substr(0, this.serviceWorker.scriptURL.lastIndexOf('/') + 1).slice(window.location.origin.length)}webtorrent/keepalive/`), keepAliveTime)
+          if (!this.workerKeepAliveInterval) this.workerKeepAliveInterval = setInterval(() => fetch(`${this.serviceWorker.scriptURL.slice(0, this.serviceWorker.scriptURL.lastIndexOf('/') + 1).slice(window.location.origin.length)}webtorrent/keepalive/`), keepAliveTime)
         } else {
           cleanup()
         }