pat-helpers

Function library. Written + tested in TypeScript, compiled + minified to ES5

Index

Ctrl + F abbreviations listed for easier navigation

• Dates (ph1)
• Strings (ph2)
• Numbers (ph3)
• Arrays (ph4)
• Objects (ph5)

Dates - ph1

datesAreEqual - Checks if 2 dates the same (date only, not time).

2 parameters - Date and Date

const equalDates: boolean = datesAreEqual(new Date(), new Date())

Returns true.

const equalDates: boolean = datesAreEqual(new Date(), new Date(new Date().setDate(new Date().getDate() + 1)))

Returns false.

dateIsThisYear - Checks if the Date is this Year.

1 paramater - Date.

const validDate: boolean = dateIsThisYear(new Date())

Returns true

const validDate: boolean = dateIsThisYear(new Date(new Date().setFullYear(new Date().getFullYear() + 1)))

Returns false

dateIsThisMonth - Checks if the date is this Month.

1 parameter - Date.

const validDate: boolean = dateIsThisMonth(new Date())

Returns true

const validDate: boolean = dateIsThisMonth(new Date(new Date().setMonth(new Date().getMonth() + 1)))

Returns false

dateIsThisWeek - Checks if a Date is this Week.

1 parameter - Date.

const validDate: boolean = dateIsThisWeek(new Date())

Returns true

const validDate: boolean = dateIsThisWeek(new Date(new Date().setDate(new Date().getDate() + 7)))

Returns false

dateIsWithinRange - Checks if a Date is within 2 others.

3 paramaters - Date you are querying, earliest allowed Date and last allowed Date

const validDate: boolean = datesAreWithinRange(
    new Date(),
    new Date(new Date().setDate(new Date().getDate() - 1)),
    new Date(new Date().setDate(new Date().getDate() + 1))
)

Returns true

const validDate: boolean = datesAreWithinRange(
    new Date(),
    new Date(new Date().setDate(new Date().getDate() - 2)),
    new Date(new Date().setDate(new Date().getDate() - 1))
)

Returns false

monthString - Returns the Month in String.

2 parameters - Date, boolean for abbreviation (optional)

const month: string = monthString(new Date())

Returns 'January' || 'February' || etc.

const month: string = monthString(new Date(), true)

Returns 'Jan' || 'Feb' || etc.

suffixedDate - Returns the suffixed Date.

1 parameter - Date

const today: string = suffixedDate(new Date())

Returns 1st || 2nd || 3rd || etc..

weekdayString - Returns the Weekday in String.

2 parameters - Date, boolean for abbreviation (optional).

const weekday: string = weekdayString(new Date())

Returns 'Sunday' || 'Monday' || etc.

const weekday: string = weekdayString(new Date(), true)

Returns 'Sun' || 'Mon' || etc.

Strings - ph2

compareStrings - Checks if two strings contain the same characters.

2 parameters - String, String. Helpful for filtering search results.

const sameString: boolean = compareStrings('hello', 'hello')
const sameString: boolean = compareStrings('HELLO', ' hello ')

Returns true

const sameString: boolean = compareStrings('hello1', 'hello')

Returns false

stringIncludes - Checks if a string contains another.

2 parameters - String you are enquiring within, String you are enquiring with.

const validString: boolean = stringIncludes('hello', 'he')
const validString: boolean = stringIncludes('HELLO', ' he ')

Returns true

const validString: boolean = stringIncludes('he', 'hello')
const validString: boolean = stringIncludes('hello', 'hell1')

Returns false

Numbers - ph3

evenNumbers - Returns even numbers in a range.

1 parameter - Number

const evenNumbers: number[] = evenNumbers(10)

Returns [0, 2, 4, 6, 8, 10]

oddNumbers - Returns odd numbers in a range.

1 parameter - Number

const oddNumbers: number[] = oddNumbers(10)

Returns [1, 3, 5, 7, 9]

square - Squares numbers.

1 parameter - Number

const square: number = square(2)

Returns 4

Arrays - ph4

zip - combines arrays. Shamelessly stolen from python.

2 parameters - Array Array

const zipped: object[] = zip(
    [{ name1: '1', age: 1 }, { name: "2", age: 20 }],
    [{ ownsDog: false, skier: false }, { ownsDog: true, skier: true }]
)

Returns

  [
    { name: "1", age: 30, ownsDog: false, skier: false },
    { name: "2", age: 20, ownsDog: true, skier: true }
  ]

Objects - ph5

deepClone - Deep clones an object.

1 paramater - Object