Bunny TUS Upload Signature Typescript

Signature.ts

require("dotenv").config();
const crypto = require("crypto");

private getAPIKey(): string {
    return process.env.BUNNY_STREAM_API_KEY
}

private getSignature(library_id, video_id, expiration_time = 86400) {
    //https://docs.bunny.net/reference/tus-resumable-uploads
    const expires = Math.floor(new Date() as any / 1000) + expiration_time;
    const hashableBase = library_id + this.getAPIKey() + expires + video_id
    const signature = crypto.createHash("sha256").update(hashableBase).digest('hex')
    return {signature, expires, library_id}
}