Cannot run

makoto@makoto:~/vikunja-webhook-to-discord-webhook$ bun run index.js
error: FileNotFound while resolving package "discord-webhook-node" from "/home/makoto/vikunja-webhook-to-discord-webhook/index.js"

Bun v1.1.26 (Linux x64)
makoto@makoto:~/vikunja-webhook-to-discord-webhook$ ^C
makoto@makoto:~/vikunja-webhook-to-discord-webhook$ ls -l
total 72
-rw-rw-r-- 1 makoto makoto  9738 Sep  6 02:07 bun.lockb
-rw-rw-r-- 1 makoto makoto   131 Sep  6 02:07 example.env
-rw-rw-r-- 1 makoto makoto  8673 Sep  6 02:07 index.js
-rw-rw-r-- 1 makoto makoto 35148 Sep  6 02:07 LICENSE
-rw-rw-r-- 1 makoto makoto   292 Sep  6 02:07 package.json
-rw-rw-r-- 1 makoto makoto  1026 Sep  6 02:07 ``README.md
makoto@makoto:~/vikunja-webhook-to-discord-webhook$

Instructions are missing the dependency for discord-webhook-node.