Common

This module wraps helper functions around host and other miscellaneous functions to simplify development

- Requires
``
none
`

misc.js


- Miscellaneous wrappers
- Requires:
`
fs
md5
`
- exported functions:
- isArray(arg) - return whether arg is array or not
- isObject(arg) - return whether arg is object or not
- isInt(arg) - return whether arg is integer or not
- isEmptyString(arg) - return whether arg is empty string
- deepCopy(arg) - return a clone of the arg
- md5Sort(arg) - return hash of a sorted array which is converted from an arg object
- escapeHtml(arg) - return an html escaped string from arg
- escapeRegExp(arg) - return a regex escaped string from arg
- mv(src, dst) - mv a file from src to dst
- prettifyKBUnit(arg) - from a kb unit, convert to pretty, i.e. 1024 * 1024 = 1GB
- calculateDistance(lat1, lon1, lat2, lon2) - bounding box computation of long lat distance
- convertToGb(arg) - convert kb value to gb, 1000 * 1000 = 1
- uniqify(arg, fields) - return unique array based on specific fields
- awaitWrap(arg) - return result object from promises with optional timeout
- getSafeValueFromNestedObject(arg, arr) - safely retrieve values from nested object
- jsonSafe(arg) - function to parse a json string (JSON.parse) safely
- error(scope, err) - handle error bubbling, concatenating current scope into the message

host.js

- Host level wrappers
- Requires:
`
os
net
``
- exported functions:
- myName() - return the hostname
- myAddr(iface) - return the ip address
- home() - return the home directory
- isALive(host, port) - detect if the host is alive
- isIPv4(s) - check if the given string s is a valid IPv4
- isIPv6(s) - check if the given string s is a valid IPv6