Update ESLint and Prettier

lib/scheduling.ts

@@ -21,10 +21,7 @@ import * as crypto from "crypto";
 import * as later from "later";
 
 function md532(str): number {
-  const digest = crypto
-    .createHash("md5")
-    .update(str)
-    .digest();
+  const digest = crypto.createHash("md5").update(str).digest();
   return (
     digest.readUInt32LE(0) ^
     digest.readUInt32LE(4) ^
@@ -33,29 +30,37 @@ function md532(str): number {
   );
 }
 
-export function variance(deviceId, vrnc): number {
+export function variance(deviceId: string, vrnc: number): number {
   return (md532(deviceId) >>> 0) % vrnc;
 }
 
-export function interval(timestamp, intrvl, offset = 0): number {
+export function interval(
+  timestamp: number,
+  intrvl: number,
+  offset = 0
+): number {
   return Math.trunc((timestamp + offset) / intrvl) * intrvl - offset;
 }
 
-export function parseCron(cronExp): any {
+export function parseCron(cronExp: string): any {
   const parts = cronExp.trim().split(/\s+/);
   if (parts.length === 5) parts.unshift("*");
 
   return later.schedule(later.parse.cron(parts.join(" "), true));
 }
 
-export function cron(timestamp, schedule, offset = 0): number[] {
+export function cron(
+  timestamp: number,
+  schedule: unknown,
+  offset = 0
+): number[] {
   // TODO later.js doesn't throw erorr if expression is invalid!
   const ret = [0, 0];
 
-  const prev = schedule.prev(1, new Date(timestamp + offset));
+  const prev = (schedule as any).prev(1, new Date(timestamp + offset));
   if (prev) ret[0] = prev.setMilliseconds(0) - offset;
 
-  const next = schedule.next(1, new Date(timestamp + offset + 1000));
+  const next = (schedule as any).next(1, new Date(timestamp + offset + 1000));
   if (next) ret[1] = next.setMilliseconds(0) - offset;
 
   return ret;