utility

WebJar for utility

License	License MIT
Categories	Categories Utility General Purpose Libraries
GroupId	GroupId org.webjars.npm
ArtifactId	ArtifactId utility
Last Version	Last Version 0.1.11
Release Date	Release Date Apr 30, 2020
Type	Type jar
Description	Description utility WebJar for utility
Project URL	Project URL https://www.webjars.org
Source Code Management	Source Code Management https://github.com/node-modules/utility

Download utility

Filename	Size
utility-0.1.11.pom
utility-0.1.11.jar	14 KB
utility-0.1.11-sources.jar	22 bytes
utility-0.1.11-javadoc.jar	22 bytes
Browse

How to add to project

Apache Maven

<!-- https://jarcasting.com/artifacts/org.webjars.npm/utility/ -->
<dependency>
    <groupId>org.webjars.npm</groupId>
    <artifactId>utility</artifactId>
    <version>0.1.11</version>
</dependency>

Gradle Groovy

// https://jarcasting.com/artifacts/org.webjars.npm/utility/
implementation 'org.webjars.npm:utility:0.1.11'

Gradle Kotlin

// https://jarcasting.com/artifacts/org.webjars.npm/utility/
implementation ("org.webjars.npm:utility:0.1.11")

Apache Buildr

'org.webjars.npm:utility:jar:0.1.11'

Apache Ivy

<dependency org="org.webjars.npm" name="utility" rev="0.1.11">
  <artifact name="utility" type="jar" />
</dependency>

Groovy Grape

@Grapes(
@Grab(group='org.webjars.npm', module='utility', version='0.1.11')
)

Scala SBT

libraryDependencies += "org.webjars.npm" % "utility" % "0.1.11"

Leiningen

[org.webjars.npm/utility "0.1.11"]

Dependencies

compile (1)

Group / Artifact	Type	Version
org.webjars.npm : address	jar	[0.0.1,)

Project Modules

There are no modules declared in this project.

utility

A collection of useful utilities.

Install

$ npm install utility

Usage

const utils = require('utility');

Also you can use it within typescript, like this ↓

import * as utility from 'utility';

md5

utils.md5('苏千').should.equal('5f733c47c58a077d61257102b2d44481');
utils.md5(Buffer.from('苏千')).should.equal('5f733c47c58a077d61257102b2d44481');
// md5 base64 format
utils.md5('苏千', 'base64'); // 'X3M8R8WKB31hJXECstREgQ=='

// Object md5 hash. Sorted by key, and JSON.stringify. See source code for detail
utils.md5({foo: 'bar', bar: 'foo'}).should.equal(utils.md5({bar: 'foo', foo: 'bar'}));

sha1

utils.sha1('苏千').should.equal('0a4aff6bab634b9c2f99b71f25e976921fcde5a5');
utils.sha1(Buffer.from('苏千')).should.equal('0a4aff6bab634b9c2f99b71f25e976921fcde5a5');
// sha1 base64 format
utils.sha1('苏千', 'base64'); // 'Ckr/a6tjS5wvmbcfJel2kh/N5aU='

// Object sha1 hash. Sorted by key, and JSON.stringify. See source code for detail
utils.sha1({foo: 'bar', bar: 'foo'}).should.equal(utils.sha1({bar: 'foo', foo: 'bar'}));

sha256

utils.sha256(Buffer.from('苏千')).should.equal('75dd03e3fcdbba7d5bec07900bae740cc8e361d77e7df8949de421d3df5d3635');

hmac

// hmac-sha1 with base64 output encoding
utils.hmac('sha1', 'I am a key', 'hello world'); // 'pO6J0LKDxRRkvSECSEdxwKx84L0='

decode and encode

// base64 encode
utils.base64encode('你好￥'); // '5L2g5aW977+l'
utils.base64decode('5L2g5aW977+l') // '你好￥'

// urlsafe base64 encode
utils.base64encode('你好￥', true); // '5L2g5aW977-l'
utils.base64decode('5L2g5aW977-l', true); // '你好￥'

// html escape and unescape
utils.escape('<script/>"& &amp;'); // '&lt;script/&gt;&quot;&amp; &amp;amp;'
utils.unescape('&lt;script/&gt;&quot;&amp; &amp;amp;'); // '<script/>"& &amp;'

// Safe encodeURIComponent and decodeURIComponent
utils.decodeURIComponent(utils.encodeURIComponent('你好, nodejs')).should.equal('你好, nodejs');

others

[WARNNING] getIP() remove, PLEASE use https://github.com/node-modules/address module instead.

// get a function parameter's names
utils.getParamNames(function (key1, key2) {}); // ['key1', 'key2']

// get a random string, default length is 16.
utils.randomString(32, '1234567890'); //18774480824014856763726145106142

// check if object has this property
utils.has({hello: 'world'}, 'hello'); //true

// empty function
utils.noop = function () {}

// throw out an assertion error if you were given an invalid "func"
try {
  utils.getParamNames(null); // Only function is allowed
} catch (err) {
  console.error(err); // Assertion Error
}

Date utils

// accessLogDate
utils.accessLogDate(); // '16/Apr/2013:16:40:09 +0800'

// logDate,
// 'YYYY-MM-DD HH:mm:ss.SSS' format date string
utils.logDate(); // '2013-04-17 14:43:02.674'
utils.YYYYMMDDHHmmssSSS(); // '2013-04-17 14:43:02.674'
utils.YYYYMMDDHHmmssSSS(','); // '2013-04-17 14:43:02,674'

// 'YYYY-MM-DD HH:mm:ss' format date string
utils.YYYYMMDDHHmmss(); // '2013-04-17 14:43:02'
utils.YYYYMMDDHHmmss(new Date(), {dateSep: '.'}); // '2013.04.17 14:43:02'

// 'YYYY-MM-DD' format date string
utils.YYYYMMDD(); // '2013-04-17'
utils.YYYYMMDD(''); // '20130417'
utils.YYYYMMDD(','); // '2013,04,17'

// datestruct
utils.datestruct(); // { YYYYMMDD: 20130416, H: 8 }

// Unix's timestamp
utils.timestamp(); // 1378153226

// Parse timestamp
// seconds
utils.timestamp(1385091596); // Fri Nov 22 2013 11:39:56 GMT+0800 (CST)
// millseconds
utils.timestamp(1385091596000); // Fri Nov 22 2013 11:39:56 GMT+0800 (CST)

Number utils

// Detect a number string can safe convert to Javascript Number.: `-9007199254740991 ~ 9007199254740991`
utils.isSafeNumberString('9007199254740991'); // true
utils.isSafeNumberString('9007199254740993'); // false

// Convert string to number safe:
utils.toSafeNumber('9007199254740991'); // 9007199254740991
utils.toSafeNumber('9007199254740993'); // '9007199254740993'

// Produces a random integer between the inclusive `lower` and exclusive `upper` bounds.
utils.random(100); // [0, 100)
utils.random(2, 1000); // [2, 1000)
utils.random(); // 0

Timers

utils.setImmediate(function () {
  console.log('hi');
});

map

Create a real map in javascript.

use Object.create(null)

const map = utils.map({a: 1});

// should.not.exist(map.constractor);
// should.not.exist(map.__proto__);
// should.not.exist(map.toString);
// should not exist any property

console.log(map); // {a: 1}

String utils

// split string by sep
utils.split('foo,bar,,,', ','); // ['foo', 'bar']

// replace string work with special chars which `String.prototype.replace` can't handle
utils.replace('<body> hi', '<body>', '$& body'); // '$& body hi'

// replace http header invalid characters
utils.replaceInvalidHttpHeaderChar('abc你好11'); // {invalid: true, val: 'abc  11'}

Try

const res = utils.try(function () {
  return JSON.parse(str);
});

// {error: undefined, value: {foo: 'bar'}}
// {error: Error, value: undefined}

Note that when you use typescript, you must use the following methods to call ' Try '

import * as utility from 'utility';

utility.UNSTABLE_METHOD.try(...);
...

argumentsToArray

function() {
  const arr = utility.argumentsToArray(arguments);
  console.log(arr.join(', '));
}

JSON

const obj = utils.strictJSONparse('"hello"');
// will throw when JSON string is not object

const pkg = utils.readJSONSync('package.json');
utils.writeJSONSync('package.json', pkg, {
  replacer: null,
  space: '\t',
});

Or you can use async API

async () => {
  const pkg = await utils.readJSON('package.json');
  await utils.writeJSON('package.json', pkg);
}

Hint: In utils.writeJSON*(), if pkg is an object, the optional third parameter options may contain two keys.

replacer: Equals to JSON.stringify()'s second parameter;

space: Equals to JSON.stringify()'s third parameter. Defaults to 2.

Refs:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#The_replacer_parameter

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#The_space_argument

Object.assign

// assign object
utility.assign({}, { a: 1 });

// assign multiple object
utility.assign({}, [ { a: 1 }, { b: 1 } ]);

benchmark

$ node benchmark/date_format.js

moment().format("DD/MMM/YYYY:HH:mm:ss ZZ"): "16/Apr/2013:21:12:32 +0800"
utils.accessLogDate(): "16/Apr/2013:21:12:32 +0800"
fasterAccessDate(): "16/Apr/2013:21:12:32 +0800"
fasterAccessDate2(): "16/Apr/2013:21:12:32 +0800"
new Date().toString(): "Tue Apr 16 2013 21:12:32 GMT+0800 (CST)"
Date(): "Tue Apr 16 2013 21:12:32 GMT+0800 (CST)"
Date.now(): 1366117952162
------------------------
moment().format('DD/MMM/YYYY:HH:mm:ss ZZ') x 68,300 ops/sec ±5.05% (91 runs sampled)
utils.accessLogDate() x 1,341,341 ops/sec ±2.72% (90 runs sampled)
fasterAccessDate() x 357,833 ops/sec ±1.32% (98 runs sampled)
fasterAccessDate2() x 301,607 ops/sec ±5.03% (83 runs sampled)
new Date().toString() x 738,499 ops/sec ±3.54% (86 runs sampled)
Date() x 794,724 ops/sec ±2.77% (95 runs sampled)
Date.now() x 8,327,685 ops/sec ±1.85% (94 runs sampled)
Fastest is Date.now()

benchmark/date_YYYYMMDD.js

$ node benchmark/date_YYYYMMDD.js

parseInt(moment().format("YYYYMMDD"), 10): 20130416
utils.datestruct().YYYYMMDD: 20130416
new Date().toString(): "Tue Apr 16 2013 21:12:02 GMT+0800 (CST)"
------------------------
parseInt(moment().format('YYYYMMDD'), 10) x 129,604 ops/sec ±0.46% (101 runs sampled)
utils.datestruct().YYYYMMDD x 2,317,461 ops/sec ±1.38% (95 runs sampled)
new Date().toString() x 816,731 ops/sec ±3.46% (93 runs sampled)
Fastest is utils.datestruct().YYYYMMDD