TFWhatIs

WhatIs

A small util class.

The plugin is only available for Node.JS currently.

Install package

npm install TFWhatIs

TF stands for Team First

Include package

var W = require('TFWhatIs');

Functions available

• type
• trueType
• isNaN
• isFalsey
• isEmpty
• trim
• prefixInArray
• sufixInArray
• findInArray
• for

type:

Also checks for email, url, phone number(uses libphonenumber library), NaN, Float, Int and Infinity types

W.type("hello world"); //'String'
W.type(123); //'Int'
W.type(123.23); //'Float'
W.type(NaN); //'NaN'
W.type(Infinity); //'Number'
W.type(-Infinity); //'Number'
W.type({}); //'Object'
W.type(undefined); //'Undefined'
W.type([]); //'Array'
W.type(true); //'Boolean'
W.type(new Date()); //'Date'
W.type(null); //'Null'
W.type("[e-mail]"); //'Email'
W.type("http://www.google.com/?q=testing"); //'Url'
W.type("[phone]"); //'Phone'

trueType:

Just check for type and returns true javascript type for an object

W.type("hello world"); //'String'
W.type(123); //'Number'
W.type(123.23); //'Number'
W.type(NaN); //'Number'
W.type(Infinity); //'Number'
W.type(-Infinity); //'Number'
W.type({}); //'Object'
W.type(undefined); //'Undefined'
W.type([]); //'Array'
W.type(true); //'Boolean'
W.type(new Date()); //'Date'
W.type(null); //'Null'
W.type("[e-mail]"); //'String'
W.type("http://www.google.com/?q=testing"); //'String'
W.type("[phone]"); //'String'

isNaN:

W.isNaN(NaN); //true
W.isNaN(1312); //false

isFalsey:

Even checks for empty object and array.

W.isFalsey(false); //true
W.isFalsey(null); //true
W.isFalsey(0); //true
W.isFalsey(""); //true
W.isFalsey("   "); //true
W.isFalsey({}); //true
W.isFalsey([]); //true
W.isFalsey(undefined); //true
W.isFalsey(NaN); //true
W.isFalsey(["", null, 0, NaN, undefined, , false]); //true

isEmpty:

Same as isFalsey but it returns false for false and 0. This helps to check required fields

W.isEmpty(false); //false
W.isEmpty(null); //true
W.isEmpty(0); //false
W.isEmpty(""); //true
W.isEmpty("   "); //true
W.isEmpty({}); //true
W.isEmpty([]); //true
W.isEmpty(undefined); //true
W.isEmpty(NaN); //true
W.isEmpty(["", null, 0, NaN, undefined, , false]); //false

trim:

W.trim("          "); //""
W.trim("    hello   "); //"hello"
W.trim(["", null, 0, NaN, undefined, false, , "hello"]); //["hello"]

prefixInArray:

W.prefixInArray(["Hello", "Hola", "Welcome"], "H"); //["Hello", "Hola"]
W.prefixInArray(["Hello", "Hola", "Welcome", null, undefined, 0, false, NaN], "H"); //["Hello", "Hola"]);
W.prefixInArray(["Wello", "Wola", "Welcome", null, undefined, 0, false, NaN], "H"); //[]
W.prefixInArray(["Hello", "Hola", "Welcome"], undefined); //["Hello", "Hola", "Welcome"]
W.prefixInArray(null, undefined); //null
W.prefixInArray(["Hello", "Hola", "Welcome"], ""); //["Hello", "Hola", "Welcome"]
W.prefixInArray(["Hello", "Hola", "Welcome",["Hello"]], "H"); //["Hello", "Hola"]

sufixInArray:

W.sufixInArray(["Hello", "Hole", "Welcome"], "e"); //["Hole", "Welcome"]
W.sufixInArray(["Hello", "Hole", "Welcome", null, undefined, 0, false, NaN], "e"); //["Hole", "Welcome"]
W.sufixInArray(["Wello", "Wola", "Welcome", null, undefined, 0, false, NaN], "H"); //[]
W.sufixInArray(["Hello", "Hola", "Welcome"], undefined); //["Hello", "Hola", "Welcome"]
W.sufixInArray(null, undefined); //null
W.sufixInArray(["Hello", "Hola", "Welcome"], ""); //["Hello", "Hola", "Welcome"]

findInArray:

W.findInArray(["Hello", "Hola", "Welcome"], "el"); //["Hello", "Welcome"]
W.findInArray(["Hello", "Hola", "Welcome", null, undefined, 0, false, NaN], "el"); //["Hello", "Welcome"]);
W.findInArray(["Wello", "Wola", "Welcome", null, undefined, 0, false, NaN], "z"); //[]
W.findInArray(["Hello", "Hola", "Welcome"], undefined); //["Hello", "Hola", "Welcome"]
W.findInArray(null, undefined); //null
W.findInArray(["Hello", "Hola", "Welcome"], ""); //["Hello", "Hola", "Welcome"]

for

does for in loop and checks for hasOwnProperty for both objects and arrays in one line.

W.for([1, 2, 3, 4], function(index, item, items) {
  //do something
});
W.for({"key": "value"}, function(index, item, items) {
  //do something
});
W.for(undefined, function(index, item, items) {
  //do something
}); //throws an error 'Unexpected type'
W.for(undefined, undefined) // returns undefined

LICENSE

The MIT License (MIT)

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