README
jq.node - Become a shell hero, get super-power
jq.node is JavaScript and Lodash in your shell (along with the 1.45M npm modules). It's a powerful command-line JSON/string processor. It so easy it feels like cheating your inner-bearded-sysadmin.
Rational
I'm a huge fan of jq but it was so many times inconsistent and irritating. It sometimes felt like JavaScript but it was not. jq.node is what jq should be in my opinion. First version was written in 25 lines of JavaScript code and was already way more powerful than jq, backed from day one by more than 300 helpers from Lodash FP.
Why jq.node? Why not jq?
- jq.node does not try to implement its own expression language, it's pure JavaScript
- no need to learn new operators or helpers, if you know lodash/fp, you know jq.node helpers
- more powerful than jq will ever be
jqn 'filter(has("email")) | groupBy(u => u.email.split("@")[1]) | csv'
- through
--require
command option, jq.node leverages 1.45M npm modules. Hard to do more powerful than that!
Why jq? Why not jq.node?
- performance matters more than feature set (in our current implementation jq is faster than jq.node, C vs JavaScript)
- some features of jq are not currently implemented in jq.node
- jq is a binary, jq.node is a NodeJS project (🌟 accessible through a docker image)
Install (NodeJS)
npm install jq.node -g
Shameless plug
- Charts, simple as a URL. No more server-side rendering pain, 1 url = 1 chart
- Looking for a free Redis GUI? Or for real-time alerting & monitoring for Redis?
- Mailpopin - Stripe payment emails you can actually use
CLI Usage
# the 4 commands below do the same thing
cat users.json | jqn 'filter(has("email")) | groupBy(function(u){return u.email.split("@")[1]}) | csv'
cat users.json | jqn 'filter(has("email")) | groupBy(u => u.email.split("@")[1]) | csv'
cat users.json | jqn 'filter(has("email")) | groupBy(u => get(u.email.split("@"), 1)) | csv'
cat users.json | jqn 'filter(has("email")) | groupBy(flow(get("email"), split("@"), get(1))) | csv'
- Complex and tricky JSON querying made easy with jq.node
- Editing string (to JSON) in clipboard with jq.node
Note: the pipe |
must always be surrounded by space to be understood by jqn
as a pipe.
Examples
Be notified when a JSON value changed
while true; do curl -s http://10.10.0.5:9000/api/ce/task?id=AVhoYB1sNTnExzIJOq_k | jqn 'property("task.status"), thru(a => exit(a === "IN_PROGRESS" ? 0 : 1))' || osascript -e 'display notification "Task done"'; sleep 5; done
Open every links from the clipboard
pbpaste | jqn -x -r opn 'split("\n") | forEach(opn)'
- pbpaste, echoes clipboard content, MacOS only (use xclip or xsel in Linux)
- opn is "a better node-open. Opens stuff like websites, files, executables. Cross-platform."
API Usage
jq.node
exposes a node API for programmatic use. Require the jq
function from the main module.
The arguments are jq(input, transformation, options, callback)
const { jq } = require('jq.node')
jq('20111031', 'thru(a => moment.utc(a, "YYYYMMDD"))', { rawInput: true, require: 'moment' }, function (err, result) {
console.log(result) // "2011-10-31T00:00:00.000Z"
})
or with promises and async/await, via the bluebird module:
const { Promisify } = require('bluebird')
const { jq } = Promisify(require('jq.node'))
const result = await jq('20111031', 'thru(a => moment.utc(a, "YYYYMMDD"))', { rawInput: true, require: 'moment' })
console.log(result) // "2011-10-31T00:00:00.000Z"
Options
CLI Shorthand | CLI Longhand | API Option | Type | Purpose |
---|---|---|---|---|
-h | --help | - | - | Display the help message and exit. |
-j | --json | json | boolean | Force the result to be output as JSON. Without this, jqn outputs strings verbatim and non-strings as JSON. |
-x | --raw-input | rawInput | boolean | |
-c | --color | color | boolean | Colorize JSON (default true) |
-r | --require | require | array(string) | * Require a NPM module <npm-module-name> . |
-v | --version | - | - | Display the version and exit. |
- jq.node will automatically installs in a temporary folder it if its not available. The module will be available in the expression through its name (e.g.
lodash
for thelodash
module). Module names that are invalid JavaScript variable names (e.g.js-yaml
) will be exposed in camel-case format (e.g.jsYaml
).
Currently supported
templateSettings
,after
,ary
,assign
,assignIn
,assignInWith
,assignWith
,at
,before
,bind
,bindAll
,bindKey
,castArray
,chain
,chunk
,compact
,concat
,cond
,conforms
,constant
,countBy
,create
,curry
,curryRight
,debounce
,defaults
,defaultsDeep
,defer
,delay
,difference
,differenceBy
,differenceWith
,drop
,dropRight
,dropRightWhile
,dropWhile
,fill
,filter
,flatMap
,flatMapDeep
,flatMapDepth
,flatten
,flattenDeep
,flattenDepth
,flip
,flow
,flowRight
,fromPairs
,functions
,functionsIn
,groupBy
,initial
,intersection
,intersectionBy
,intersectionWith
,invert
,invertBy
,invokeMap
,iteratee
,keyBy
,keys
,keysIn
,map
,mapKeys
,mapValues
,matches
,matchesProperty
,memoize
,merge
,mergeWith
,method
,methodOf
,mixin
,negate
,nthArg
,omit
,omitBy
,once
,orderBy
,over
,overArgs
,overEvery
,overSome
,partial
,partialRight
,partition
,pick
,pickBy
,property
,propertyOf
,pull
,pullAll
,pullAllBy
,pullAllWith
,pullAt
,range
,rangeRight
,rearg
,reject
,remove
,rest
,reverse
,sampleSize
,set
,setWith
,shuffle
,slice
,sortBy
,sortedUniq
,sortedUniqBy
,split
,spread
,tail
,take
,takeRight
,takeRightWhile
,takeWhile
,tap
,throttle
,thru
,toArray
,toPairs
,toPairsIn
,toPath
,toPlainObject
,transform
,unary
,union
,unionBy
,unionWith
,uniq
,uniqBy
,uniqWith
,unset
,unzip
,unzipWith
,update
,updateWith
,values
,valuesIn
,without
,words
,wrap
,xor
,xorBy
,xorWith
,zip
,zipObject
,zipObjectDeep
,zipWith
,entries
,entriesIn
,extend
,extendWith
,add
,attempt
,camelCase
,capitalize
,ceil
,clamp
,clone
,cloneDeep
,cloneDeepWith
,cloneWith
,conformsTo
,deburr
,defaultTo
,divide
,endsWith
,eq
,escape
,escapeRegExp
,every
,find
,findIndex
,findKey
,findLast
,findLastIndex
,findLastKey
,floor
,forEach
,forEachRight
,forIn
,forInRight
,forOwn
,forOwnRight
,get
,gt
,gte
,has
,hasIn
,head
,identity
,includes
,indexOf
,inRange
,invoke
,isArguments
,isArray
,isArrayBuffer
,isArrayLike
,isArrayLikeObject
,isBoolean
,isBuffer
,isDate
,isElement
,isEmpty
,isEqual
,isEqualWith
,isError
,isFinite
,isFunction
,isInteger
,isLength
,isMap
,isMatch
,isMatchWith
,isNaN
,isNative
,isNil
,isNull
,isNumber
,isObject
,isObjectLike
,isPlainObject
,isRegExp
,isSafeInteger
,isSet
,isString
,isSymbol
,isTypedArray
,isUndefined
,isWeakMap
,isWeakSet
,join
,kebabCase
,last
,lastIndexOf
,lowerCase
,lowerFirst
,lt
,lte
,max
,maxBy
,mean
,meanBy
,min
,minBy
,stubArray
,stubFalse
,stubObject
,stubString
,stubTrue
,multiply
,nth
,noConflict
,noop
,now
,pad
,padEnd
,padStart
,parseInt
,random
,reduce
,reduceRight
,repeat
,replace
,result
,round
,runInContext
,sample
,size
,snakeCase
,some
,sortedIndex
,sortedIndexBy
,sortedIndexOf
,sortedLastIndex
,sortedLastIndexBy
,sortedLastIndexOf
,startCase
,startsWith
,subtract
,sum
,sumBy
,template
,times
,toFinite
,toInteger
,toLength
,toLower
,toNumber
,toSafeInteger
,toString
,toUpper
,trim
,trimEnd
,trimStart
,truncate
,unescape
,uniqueId
,upperCase
,upperFirst
,each
,eachRight
,first
are exposed from lodash/fp.csv
is exposed from json2csv- any of 300 000+ npm modules through the
--require
option!
Performance
- jq
time sh -c "cat messages.json | jq '.[].type'"
2ms user 0.01s system 95% cpu 0.028 total
- jq.node
time sh -c "cat messages.json | jqn 'map(\"type\")'"
170ms user 0.03s system 108% cpu 0.181 total
Roadmap
- Tests
- Json-stream support
- Optionally colorize output (while still JSON compatible)
I accept pull-requests!
Changelog
Backers
Maintainers
No maintainers yet! Will you be the first?
Sponsors
No sponsors yet! Will you be the first?
Contributors
These amazing people have contributed code to this project:
- Francois-Guillaume Ribreau
- chocolateboy — view contributions
- Anton Ilin — view contributions
- Bruno Heridet
- Thales Mello — view contributions
- Michael Mior
Discover how you can contribute by heading on over to the CONTRIBUTING.md
file.
License
Unless stated otherwise all works are:
- Copyright © Francois-Guillaume Ribreau
and licensed under: