jq.node - like jq but WAY MORE powerful (300+ helpers πŸ”₯ & 300K+ modules 😱)
Clone or download
Latest commit a605ddd Jun 16, 2018

README.md

jq.node - Become a shell hero, get super-power

Build Status deps Version Docker hub available-for-advisory extra Twitter Follow Get help on Codementor

jq.node is JavaScript and Lodash in your shell (along with the 300K+ 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 300K+ 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 (🌟 soon accessible through a docker image)

Install (NodeJS)

npm install jq.node -g

Shameless plug

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'

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 the lodash 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?

Patreon donate button Gratipay donate button Flattr donate button PayPal donate button Bitcoin donate button

Contributors

These amazing people have contributed code to this project:

Discover how you can contribute by heading on over to the CONTRIBUTING.md file.

License

Unless stated otherwise all works are:

and licensed under: