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https://github.com/fliphub/fliplog
fluent logging with verbose insight, colors, tables, emoji, filtering, spinners, progress bars, timestamps, capturing, stack traces, tracking, presets, & more...
https://github.com/fliphub/fliplog
capture chainable cli cli-color color debug emoji fluent log logging presets progress progress-bars spinner stack-traces tables timestamp trace verbose
Last synced: about 2 months ago
JSON representation
fluent logging with verbose insight, colors, tables, emoji, filtering, spinners, progress bars, timestamps, capturing, stack traces, tracking, presets, & more...
- Host: GitHub
- URL: https://github.com/fliphub/fliplog
- Owner: fliphub
- Created: 2017-03-29T05:27:41.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2017-06-14T23:18:44.000Z (over 7 years ago)
- Last Synced: 2024-07-30T10:06:37.028Z (about 2 months ago)
- Topics: capture, chainable, cli, cli-color, color, debug, emoji, fluent, log, logging, presets, progress, progress-bars, spinner, stack-traces, tables, timestamp, trace, verbose
- Language: JavaScript
- Homepage:
- Size: 3.85 MB
- Stars: 44
- Watchers: 3
- Forks: 0
- Open Issues: 11
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
- awesome-fluents - fliplog - - *Maintainer*: `James`[](https://github.com/aretecode)[](https://twitter.com/aretecode) (NodeJS)
README
# ⛓🔈 fliplog
[![NPM version][fliplog-npm-image]][fliplog-npm-url]
[![MIT License][license-image]][license-url]
[![fliphub][gitter-badge]][gitter-url]
[![flipfam][flipfam-image]][flipfam-url]
[fliplog-npm-image]: https://img.shields.io/npm/v/fliplog.svg
[fliplog-npm-url]: https://npmjs.org/package/fliplog
[license-image]: http://img.shields.io/badge/license-MIT-blue.svg?style=flat
[license-url]: https://spdx.org/licenses/MIT
[gitter-badge]: https://img.shields.io/gitter/room/fliphub/pink.svg
[gitter-url]: https://gitter.im/fliphub/Lobby
[flipfam-image]: https://img.shields.io/badge/%F0%9F%8F%97%20%F0%9F%92%A0-flipfam-9659F7.svg
[flipfam-url]: https://www.npmjs.com/package/flipfam
> all-in-one logging tool
[deep-diff]: https://www.npmjs.com/package/deep-diff
[fmtobj]: https://github.com/queckezz/fmt-obj
[sprintf]: https://github.com/alexei/sprintf.js
[prettyformat]: https://github.com/facebook/jest/tree/master/packages/pretty-format
[ava-prettyformat]: https://github.com/avajs/pretty-format
[jest-diff]: https://github.com/facebook/jest
[diff-match-patch]: https://code.google.com/archive/p/google-diff-match-patch/
[code-prettify]: https://github.com/google/code-prettify
[chain-able]: https://github.com/fluents/chain-able
[ansi]: https://github.com/TooTallNate/ansi.js
[prettysize]: https://github.com/davglass/prettysize
[listr]: https://github.com/samverschueren/listr
[treeify]: https://github.com/notatestuser/treeify
[js-traverse]: https://github.com/substack/js-traverse
[ava-format]:https://github.com/avajs/ava
## usage
```bash
yarn add fliplog
npm i fliplog --save
```
```js
const log = require('fliplog')
```
## 🔠 description
fluent logging with verbose insight, colors, tables, emoji, deep cleaning, filtering, spinners, progress bars, timestamps, capturing, stack traces, clearing, boxen, stringifying, code highlighting, notifications, beeping, sparkles, slow-mode, formatting, bar charts, & presets
## 🗝️ legend:
- [👋 basics](#-basics)
- [🎀 stringifying](#-stringifying)
- [json](#json)
- [stringify](#stringify)
- [🙊 silencing](#-silencing)
- [capture all](#capture-all)
- [return formatted values](#return)
- [return values](#return)
- [🎨 color](#-color)
- [chalk](#chalk)
- [shorthands](#shorthands)
- [xterm](#xterm)
- [function](#function)
- [😊 emoji](#-emoji)
- [☕ filtering](#-filtering)
- [🔢 level](#-level)
- [🎯 matcher](#-matcher)
- [🚩 flags](#tags)
- [filter](#filter--tags)
- [tags](#filter--tags)
- [🛑 quick](#-quick)
- [⬛ table](#-tables)
- [🛁 cleaner](#-cleaner)
- [⚖️ diff](https://github.com/fliphub/fliplog/blob/master/README.md#️-diff)
- [🌀 spinner](#-spinner)
- [multi](#-spinner)
- [ora](#-spinner)
- [📈 progress](#-progress)
- [🛎 notify](#-notify)
- [🗺 stack traces](#-stack-traces)
- [🔎 finding logs](#-find-logs)
- [⚾ catch errors](#-catch-errors)
- [®️ .register](https://github.com/fliphub/fliplog#️-register)
- [trace](#trace)
- [🆑 clear](#-clear)
- [🕳 deep](#-deep)
- [verbose vs tosource](#vs)
- [verbose](#verbose)
- [tosource](#tosource)
- [💈 highlight](#-highlight)
- [🍰 presets](#-presets)
- [add your own](#add-your-own)
- [use built ins](#use-built-ins)
- [⌛ timestamps](#-timestamps)
- [from](#from)
- [🎢 fun](#-fun)
- [🌲 tree](#-tree)
- [📊 bar chart](#-bar)
- [📦 box](#-box)
- [📯 beep](#-beep)
- [🎇 sparkly](#-sparkly)
- [🔣 formatting](#-formatting)
- [🛰 space](#-space)
- [💱 formatter](#-formatter)
- [🐌 slow](#-slow)
- [⏲ timer](#-timer)
- [⚡ performance](#-performance) (_lightweight configurable dependencies_)
- [resources](#-resources)
## 👋 basics
```js
log
.data({anyKindOfData: true}) // .json, .stringify, .tosource, .verbose
.text('text to use, this is what gets colored')
.color('bold') // any cli-color, chalk, available as shorthands
.echo() // outputs the log, .return to return the formatted values
```
# 🆕 NEW!
> 📝📚 all of these new ones need more docs
[📖 read the wip docs for new stuff on the wiki](https://github.com/fliphub/fliplog/wiki/new)
### `+` == `.echo`
```js
log.italic('so short!')+
// ^ same as `log.italic('so short!').echo()`
```
## 🎀 stringifying
### json
[prettyjson](https://www.npmjs.com/package/prettyjson)
```js
// optional second arg for options passed into pretty json
log.json({eh: 'prettified'})
```
### stringify
[javascript-stringify](https://www.npmjs.com/package/javascript-stringify)
```js
// args are the same as javascript-stringify
log.stringify({data: 'can stringify deep things'})
```
## 🙊 silencing
- to disable outputting a log, `.silence()` (optional `true`/`false` arg)
- to disable **all** logs, `.shush()`
- to enable **all** logs, `.unshush()`
### capture all
> capture output of all console logs everywhere
```js
log.startCapturing()
console.log('this will be captured')
log.stopCapturing()
// captured data is available here
const saved = log.savedLog
```
### return
return only echos from fliplogs, useful for getting formatted data.
```js
// formatted data
const {text, data} = log
.data({catchMeIfYouCan: true})
.text('gingerbread man')
.returnVals()
// this returns everything inside, it will call .filter first
const everything = log
.color('blue.underline')
.data({canYouHandleIt: true})
.text('M')
.return()
```
## 🎨 color
### chalk
all [chalk](https://github.com/chalk/chalk) colors available with `.color`
```js
log
.text('\n========================================\n')
.color('bold')
.echo()
```
#### shorthands
```js
log
.bold('same as calling .color(bold).text(all this text)')
.echo()
```
### xterm
all [cli-color](https://www.npmjs.com/package/cli-color) are available by calling `.xterm`
```js
log
.time(true)
.xterm(202, 236).text(' orange!!! ')
.echo()
```
## function
because it's javascript, the log is an object... but it can be called as a function for convenience
```js
log({data: true}, 'text', 'color')
```
stack
## 😊 emoji
names using [emoji-commits](https://github.com/aretecode/emoji-commits) are available with `.emoji` (currently 🚧 not all have been ported yet)
```js
log
.emoji('phone')
.text('et')
.data('phone home')
.echo()
```
## ☕ filtering
comma separated strings, or arrays
a function can also be passed in, the argument will be an object containing the entries [see `flipchain/ChainedMap.entries`](https://www.npmjs.com/package/flipchain#other)
### 🔢 level
filter by log level as a number with simple [comparison operators](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators)
```js
log.filter('>= 1')
log.level(1).bold('above 1... success').echo()
log.level(0).bold('not above 1...').echo()
```
### 🎯 matcher
filter using an `Array` made up of `Function`s, `String`s, and `RegExp`s!
```js
log.filter(['canada*'])
log.tag('canada-eh').white('canadian, pass.').echo()
```
more advanced
```js
log.filter(['eh*', '!warm', tag => (/ez/).test(tag)])
log.tag('eh').underline('eh').echo()
log.tag('warm').red('warm').echo()
log.tag('ez').yellow('ez').echo()
```
❗ important to note, if only a function is passed in, it will have the entire log instance passed to the argument, rather than the array of tags (for compatibility & simplicity.)
### filter & tags
- `verbose` enables everything
- `silent` silences everything
- `!` means disabled
```js
log
.filter('!nope, yes')
log
.tag('unrelated,nope')
.cyan('you will never see me :-(')
.echo()
log
.tag('yes')
.underline('yay!')
.echo()
```
## 🚩 flags
this can also be done using cli flags [compat with debug flags](https://github.com/fliphub/fliplog/issues/22)
```bash
yourprogram --DEBUG="!nope,yes"
yourprogram --DEBUG=verbose
```
## 🛑 quick
quickly log data and exit if you want to stop execution at a certain point for
debugging
```js
log.quick({give: 'me'}, 'everything', 'and quit')
// or
log.data({now: 'die'}).exit(1)
```
## ⬛ tables
extending [cli-table2](https://github.com/jamestalmage/cli-table2)
```js
log
.table(['header1', 'header2'], ['row1', 'row2'])
.echo()
log
.table(['header1', 'header2'])
.row({'key1': 'val1'})
.row({'key2': 'val2'})
.echo()
```
## ⚖️ diff
(_uses a fork of [ava-format][ava-format] which is a fork of [jest-diff][jest-diff] which is a fork of [google's diff-match-patch][diff-match-patch]_)
Compare two pieces of data. Data will be cloned so it can be mutated if needed, and then compared.
```js
let oneOneTwoTwo = 'one-one was a race horse 🐎 '
log.diff(oneOneTwoTwo)
log.diff(oneOneTwoTwo + '... two-two was one, two.')
log.echo()
```
(_previously [deep-diff][deep-diff] & cli-table was used._)
```js
const royalty = {posh: true}
const lowlyPeasant = {pauper: true}
log.diff(royalty)
const abomination = Object.assign(royalty, lowlyPeasant)
log.diff(abomination)
log.echo()
```
## 🛁 cleaner
extremely powerful tool built with [chain-able][chain-able] using a fork of [js-traverse][js-traverse]
can take next-to-unusable output such as this 
and clean it usable
...or you could clean out certain phrases from every log
```js
var obj = {property: {}}
obj.circularReference = obj
obj[Symbol('foo')] = 'foo'
obj.map = new Map()
obj.map.set('prop', 'value')
obj.array = [1, NaN, Infinity]
log.prettyformat(obj).echo()
const cleaner = log
.cleaner(true)
.keys([/array|circularReference|map|property/])
.data(obj)
.clean()
.echo()
```
## 🌀 spinner
- extends [cli-spinner](https://www.npmjs.com/package/cli-spinner#demo)
- uses [cli-spinners](https://github.com/sindresorhus/cli-spinners)
- `.Spinner` is available on fliplog as the instantiated spinner
#### easy
```js
// easy to color spinners
log.bold().startSpinner('loading...')
setTimeout(() => log.stopSpinner(), 2000)
```
#### advanced
```js
// instance available on log.Spinner
log.startSpinner('spinner message', {
// optional spinner args
onTick: () => {},
// where to output the logs, default process.stdout
stream: () => {}
// default 60
delay: 80,
})
console.log('log this, then spinner shows up again - it is sticky.')
log.stopSpinner()
```
### 🌀🌀 multiple
- uses [node-multispinner](https://github.com/codekirei/node-multispinner)
```js
// instance available on log.spinners
log
.addSpinner('key1', 'spinner 1 msg')
.addSpinner('key2', 'spinner 2 msg')
.addSpinner('key3', 'spinner 3 msg')
// arg is optionally a string for frames
// or an object for multi-spinner options
.startSpinners()
// string arg removes by name
setTimeout(() => log.removeSpinner('key1'), 1000)
// empty args removes all
setTimeout(() => log.removeSpinner(), 20000)
```
### ora
- `.ora` is available as a method with [the same options](https://github.com/sindresorhus/ora)
- adds `.fliplog` to the `ora` instance to allow chaining back to fliplog
- returns `ora` instance
```js
// call .ora
log.ora('loading...').start()
// or
log.spinner('loading...', {ora: true})
```
## 📈 progress
- [node-progress](https://github.com/visionmedia/node-progress)
### default
```js
log.progress()
```
### interval callback
total, cb(bar, interval), interval time
```js
log.progress(20, (bar, interval) => {
bar.tick()
if (bar.complete) clearInterval(interval)
}, 1000)
```
### advanced
```js
let contentLength = 128 * 1024
const bar = log.progress(' downloading [:bar] :percent :etas', {
complete: '=',
incomplete: ' ',
width: 20,
total: contentLength,
}).progressBar
function next() {
if (!contentLength) return
bar.tick(Math.random() * 10 * 1024)
if (!bar.complete) setTimeout(next, Math.random() * 1000)
}
next()
```
## 🛎 notify
- allows passing in the same options from [node-notifier](https://github.com/mikaelbr/node-notifier)
#### string title and [description]
or a `string` for `title`
```js
log
.notify('woot!', 'super long and not as important description')
.echo()
```
#### shorthand (echo immediate)
```js
log.notify('woot!', true)
```
## 🗺 stack traces
### ⚾ catch errors
will output the stack trace formatted and inspected deeply with the error preset
```js
const ForeverAndEver = new Promise(resolve => Promise.resolve())
.then(() => Promise.reject('💍'))
.catch(log.catch)
```
### 🔎 find logs
in your entry point, calling `log.track()` will output the location all of the next logs output from.
```js
log.track()
// later on...
log.bold('I cannot be found... oh wait, I was tracked.').echo()
```
you can also track every console.log anywhere
```js
log.trackConsole()
// becomes `eh 'at your-file#the-line-number'`
console.log('me!')
```
### trace
calling `.trace` will output a shortened stack trace to the current location.
```js
log.data({bigData: 'oh'}).trace().echo()
```
## ®️ register
### registerConsole
defines properties on the `console` global and automatically calls `echo` where applicable, for easier access:
```js
log.registerConsole()
console.time('so easy')
console.bold('hullabaloo')
console.error(new Error('eh-rar'))
console.timeEnd('so easy')
console.quick('toodaloo')
// also available
// verbose, info, error, track, trace, note, warning, spinner, time, timeEnd, timeLap timeLapEcho, box, beep, timer, table, diff, diffs, stringify, stack, json, filter, tags, quick, exit, reset, sleep, slow, red, yellow, cyan, underline, magenta, bold
```
### registerCatch
catches uncaught promises and errors, displays them verbosely.
```js
log.registerCatch()
throw new Error('eh')
Promise.reject('eh')
```
## 🆑 clear
> this will clear the terminal (at least, move it down so it is clear)
```js
log.clear()
```
## 🕳 deep
### vs
| goal | winner
| ------------- |:-------------:|
| code source | tosource |
| deep inside objects | verbose |
| colors | verbose |
### verbose
using [inspector-gadget](https://www.npmjs.com/package/inspector-gadget), objects are inspected and colorized as deep as configured
```js
log
.bold('verbose:')
.data({
numbers: 1000,
booleans: true,
functions: () => {},
strings: 'wacky wavy fun',
})
.verbose(/* optional number for how deep to go */)
.echo()
```
### tosource
> see the code source
using [tosource](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toSource) [for nodejs](https://www.npmjs.com/package/tosource) you can look at the source of a variable
```js
log
.bold('tosource:')
.data({
numbers: 1000,
booleans: true,
functions: () => {},
strings: 'wacky wavy fun',
})
.tosource()
.echo()
```
## 💈 highlight
- [cli-highlight](https://www.npmjs.com/package/cli-highlight) (but will not output wrapping html tags around the code, other options are disabled, default themes are used)
```js
function highlitedWithColors() { return 'notice me' }
log
.data(highlitedWithColors)
.tosource()
.highlight()
.echo()
```
## 🍰 presets
### add your own
```js
log.addPreset('warning', (chain) => {
return chain.text('⚠ warning:').color('bgYellow.black').verbose(10)
})
```
### use built-ins
```js
log
.preset('warning')
.data('nananenano!')
.echo()
log
.preset('error')
.data(new Error('prettyfull!'))
.echo()
```
### ⌛ timestamps
```js
log
.time(true)
.color('cyan')
.text('🕳 so deep, so colorful, so meta 🎨 ')
.data(log)
.verbose()
.echo()
```
## from
to use logging from a pure js object, `.from` is available
```js
log.from({
data: 'data',
text: 'eh',
color: 'bold',
echo: true,
})
```
^ is the same as
```js
log
.text('eh')
.data('data')
.color('bold')
.echo()
```
## 🎢 fun
these will all be silent by default, so you can easily disable them by filtering your logs or setting silent output which can be exceedingly helpful.
## 🌲 tree
```js
log
.color('green')
.text('🌲 treeify')
.tree({
oranges: {
mandarin: {
clementine: null,
tangerine: 'so cheap and juicy!',
},
},
apples: {
'gala': null,
'pink lady': null,
},
})
.echo()
```
### 🎇 sparkly
- options from [sparkly](https://www.npmjs.com/package/sparkly) can be passed in
- will output a random sparkle if it is not set
```js
log.sparkly().echo()
```
## 📊 bar
- will output a random bar chart if not set
- options from [babar](https://www.npmjs.com/package/babar) can be passed in
### random
```js
log.bar().echo()
```
### bar
```js
const points = []
for (var i = 0; i < Math.PI * 2; i += Math.PI / 1000) {
points.push([i, Math.cos(i)]);
}
log.bar(points).echo()
```
### styles and bar
```js
log
.bar([[0, 1], [1, 5], [2, 5], [3, 1], [4, 6]])
.barStyles({
width: 80,
height: 10,
color: 'yellow',
maxY: 100
})
.echo()
```
## 📯 beep
all options from [beeper](https://www.npmjs.com/package/beeper)
```js
log.beep(1).echo()
```
## 📦 box
- all [boxen](https://www.npmjs.com/package/boxen) options
### colors
```js
// with bold colors
log.bold().box('fliplog').echo()
// echos right away
log.box('fliplog', true)
// use boxen box styles
log
.boxStyles({borderColor: 'blue'})
.box('fliplog')
.echo()
```
## 🔣 formatting
```js
log.data({}).bold('text')
// returns the currently formatted text and data
const {text, data} = log.returnVals()
// returns every single setting as an object, resets
const everything = log.return()
```
### 🛰 space
will output `number` of spaces after your log
```js
log.text('followed by 2 empty lines').space(2).echo()
```
## 🐌 slow
slow mode allows debugging each log step-by-step, and will force a `sleep` usable across all environments using [sleepfor](https://www.npmjs.com/package/sleepfor)
```js
log.slow(1000)
log.emoji('snail').yellow('slow...').echo()
const start = Date.now()
log.emoji('snail').yellow('...slow').echo()
const end = Date.now() - start
```
## ⏲ timer
start, stop, lap, and timer instance using [fliptime](https://www.npmjs.com/package/fliptime)
```js
log
.startTimer('named')
.sleep(1000)
.stopTimer('named')
.echoTimer('named')
```
or for more customized usage
```js
log.startTimer('named')
sleepfor(1000)
log.stopTimer('named').echoTimer('named')
const fliptime = log.fliptime()
```
### 💱 formatter
allows final formatting of the data before echoing
> ✍ interesting to note, this is how most plugins do their formatting
```js
function cb(data) {
if (!data || typeof data !== 'object') return data
Object
.keys(data)
.forEach(key => {
if (typeof data[key] === 'string')
data[key] = data[key].replace(/\s{2}/gmi, ' ')
else if (Array.isArray(data[key]))
data[key] = data[key].map(a => cb(a.name))
})
return data
}
const fixture = {
str: 'I have too many spaces',
arr: [{name: 'eh'}, {noname: 'just undefined'}],
}
log
.formatter(cb)
.data(fixture)
.echo()
```
## ⚡ performance
#### ⚙ config
to keep the module lightweight, almost all functionality is added through plugins.
#### requiring
all non-core dependencies are required when functions are called **& the filtering passes**. this way, only the used-functionality is loaded.
additionally, almost all of the functions are not formatted until `.echo()`, so they will not have dependencies loaded when echoing is false which means code does not have to be changed for production.
if `echo(false)` or [filtering](#-filtering) disables the output, they are never called.
## 🔗 resources
- for more on the library used for fluent apis, see [⛓ flipchain](https://www.npmjs.com/package/flipchain)
## 📝 TODO
- to file 📒
- to stream
- middleware alongside .return
- configure which keys are persistent across instances
[flipchain-url]: https://www.npmjs.com/package/flipchain
[npm-image]: https://img.shields.io/npm/v/fliplog.svg
[npm-url]: https://npmjs.org/package/fliplog
[standard-image]: https://img.shields.io/badge/code%20style-standard%2Bes6+-brightgreen.svg
[standard-url]: https://github.com/aretecode/eslint-config-aretecode
[license-image]: http://img.shields.io/badge/license-MIT-blue.svg?style=flat
[license-url]: https://spdx.org/licenses/MIT
[gitter-badge]: https://img.shields.io/gitter/room/fliphub/pink.svg
[gitter-url]: https://gitter.im/fliphub/Lobby
[spinner-img]: https://raw.githubusercontent.com/helloIAmPau/node-spinner/master/img/spinner.gif