Get HTLCs that are about to timeout

getHTLCsabouttoexpire.js

var shell = require('shelljs');
let deltablock = 13
// finds the lowest expiration_height across all pending HTLCs
let nearesttimeout = shell.exec("lncli listchannels | jq '.[][] | .pending_htlcs[] | .expiration_height ' | sort -n | head -1").stdout.trim();
let currentblockheight = shell.exec("lncli getinfo | jq '.block_height'").stdout.trim();
console.log(`nearesttimeout, currentblockheight `,nearesttimeout, currentblockheight);
if(nearesttimeout - currentblockheight < deltablock) {
    console.log(`timeout is within ${deltablock}`)
}