strings

Enumerations

Enumeration	Description
StringEntropy	-

Type Aliases

StringEntropyFN

StringEntropyFN = (input) => number

Defined in: packages/core-utils/src/strings.ts:615

Parameters

Parameter	Type
`input`	`unknown`

Returns

number

Variables

LOWER_CASE_CHARS

const LOWER_CASE_CHARS: object

Defined in: packages/core-utils/src/strings.ts:256

Type Declaration

a

readonly a: true = true

b

readonly b: true = true

c

readonly c: true = true

d

readonly d: true = true

e

readonly e: true = true

f

readonly f: true = true

g

readonly g: true = true

h

readonly h: true = true

i

readonly i: true = true

j

readonly j: true = true

k

readonly k: true = true

l

readonly l: true = true

m

readonly m: true = true

n

readonly n: true = true

o

readonly o: true = true

p

readonly p: true = true

q

readonly q: true = true

r

readonly r: true = true

s

readonly s: true = true

t

readonly t: true = true

u

readonly u: true = true

v

readonly v: true = true

w

readonly w: true = true

x

readonly x: true = true

y

readonly y: true = true

z

readonly z: true = true

NUM_CHARS

const NUM_CHARS: object

Defined in: packages/core-utils/src/strings.ts:314

Type Declaration

0

readonly 0: true = true

1

readonly 1: true = true

2

readonly 2: true = true

3

readonly 3: true = true

4

readonly 4: true = true

5

readonly 5: true = true

6

readonly 6: true = true

7

readonly 7: true = true

8

readonly 8: true = true

9

readonly 9: true = true

UPPER_CASE_CHARS

const UPPER_CASE_CHARS: object

Defined in: packages/core-utils/src/strings.ts:285

Type Declaration

A

readonly A: true = true

B

readonly B: true = true

C

readonly C: true = true

D

readonly D: true = true

E

readonly E: true = true

F

readonly F: true = true

G

readonly G: true = true

H

readonly H: true = true

I

readonly I: true = true

J

readonly J: true = true

K

readonly K: true = true

L

readonly L: true = true

M

readonly M: true = true

N

readonly N: true = true

O

readonly O: true = true

P

readonly P: true = true

Q

readonly Q: true = true

R

readonly R: true = true

S

readonly S: true = true

T

readonly T: true = true

U

readonly U: true = true

V

readonly V: true = true

W

readonly W: true = true

X

readonly X: true = true

Y

readonly Y: true = true

Z

readonly Z: true = true

WORD_CHARS

const WORD_CHARS: object

Defined in: packages/core-utils/src/strings.ts:333

Type Declaration

0

readonly 0: true = true

1

readonly 1: true = true

2

readonly 2: true = true

3

readonly 3: true = true

4

readonly 4: true = true

5

readonly 5: true = true

6

readonly 6: true = true

7

readonly 7: true = true

8

readonly 8: true = true

9

readonly 9: true = true

a

readonly a: true = true

A

readonly A: true = true

b

readonly b: true = true

B

readonly B: true = true

c

readonly c: true = true

C

readonly C: true = true

d

readonly d: true = true

D

readonly D: true = true

e

readonly e: true = true

E

readonly E: true = true

f

readonly f: true = true

F

readonly F: true = true

g

readonly g: true = true

G

readonly G: true = true

h

readonly h: true = true

H

readonly H: true = true

i

readonly i: true = true

I

readonly I: true = true

j

readonly j: true = true

J

readonly J: true = true

k

readonly k: true = true

K

readonly K: true = true

l

readonly l: true = true

L

readonly L: true = true

m

readonly m: true = true

M

readonly M: true = true

n

readonly n: true = true

N

readonly N: true = true

o

readonly o: true = true

O

readonly O: true = true

p

readonly p: true = true

P

readonly P: true = true

q

readonly q: true = true

Q

readonly Q: true = true

r

readonly r: true = true

R

readonly R: true = true

s

readonly s: true = true

S

readonly S: true = true

t

readonly t: true = true

T

readonly T: true = true

u

readonly u: true = true

U

readonly U: true = true

v

readonly v: true = true

V

readonly V: true = true

w

readonly w: true = true

W

readonly W: true = true

x

readonly x: true = true

X

readonly X: true = true

y

readonly y: true = true

Y

readonly Y: true = true

z

readonly z: true = true

Z

readonly Z: true = true

WORD_SEPARATOR_CHARS

const WORD_SEPARATOR_CHARS: object

Defined in: packages/core-utils/src/strings.ts:327

Type Declaration

readonly ** **: true = true

_

readonly _: true = true

-

readonly -: true = true

Functions

contains()

contains(input, substring): input is string

Defined in: packages/core-utils/src/strings.ts:504

Check whether a string includes another string

Parameters

Parameter	Type
`input`	`unknown`
`substring`	`string`

Returns

input is string

containsFP()

containsFP(substring): (input) => input is string

Defined in: packages/core-utils/src/strings.ts:511

A function version of contains

Parameters

Parameter	Type
`substring`	`string`

Returns

(input) => input is string

endsWith()

endsWith(str, val): boolean

Defined in: packages/core-utils/src/strings.ts:215

A native implementation of lodash endsWith

Parameters

Parameter	Type
`str`	`unknown`
`val`	`unknown`

Returns

boolean

endsWithFP()

endsWithFP(val): (input) => boolean

Defined in: packages/core-utils/src/strings.ts:223

A function version of startsWith

Parameters

Parameter	Type
`val`	`string`

Returns

(input) => boolean

firstToLower()

firstToLower(str): string

Defined in: packages/core-utils/src/strings.ts:446

Change first character in string to lower case

Parameters

Parameter	Type
`str`	`string`

Returns

string

firstToUpper()

firstToUpper(str): string

Defined in: packages/core-utils/src/strings.ts:440

Change first character in string to upper case

Parameters

Parameter	Type
`str`	`string`

Returns

string

getFirstChar()

getFirstChar(input): string

Defined in: packages/core-utils/src/strings.ts:451

Parameters

Parameter	Type
`input`	`string`

Returns

string

getWordParts()

getWordParts(input): string[]

Defined in: packages/core-utils/src/strings.ts:342

Split a string and get the word parts

Parameters

Parameter	Type
`input`	`string`

Returns

string[]

isAlpha()

isAlpha(input, locale?): boolean

Defined in: packages/core-utils/src/strings.ts:548

Parameters

Parameter	Type
`input`	`unknown`
`locale?`	`AlphaLocale`

Returns

boolean

isAlphaNumeric()

isAlphaNumeric(input, locale?): boolean

Defined in: packages/core-utils/src/strings.ts:552

Parameters

Parameter	Type
`input`	`unknown`
`locale?`	`AlphanumericLocale`

Returns

boolean

isBase64()

isBase64(input): boolean

Defined in: packages/core-utils/src/strings.ts:517

Parameters

Parameter	Type
`input`	`unknown`

Returns

boolean

isCountryCode()

isCountryCode(input): boolean

Defined in: packages/core-utils/src/strings.ts:536

Parameters

Parameter	Type
`input`	`unknown`

Returns

boolean

isEmail()

isEmail(input): input is string

Defined in: packages/core-utils/src/strings.ts:460

Parameters

Parameter	Type
`input`	`unknown`

Returns

input is string

isFQDN()

isFQDN(input): boolean

Defined in: packages/core-utils/src/strings.ts:532

Parameters

Parameter	Type
`input`	`unknown`

Returns

boolean

isMACAddress()

isMACAddress(input, delimiter?): input is string

Defined in: packages/core-utils/src/strings.ts:472

Parameters

Parameter	Type
`input`	`unknown`
`delimiter?`	`MACDelimiter`

Returns

input is string

isMACAddressFP()

isMACAddressFP(args?): (input) => input is string

Defined in: packages/core-utils/src/strings.ts:487

A functional version of isMacAddress

Parameters

Parameter	Type
`args?`	`MACDelimiter`

Returns

(input) => input is string

isMIMEType()

isMIMEType(input): boolean

Defined in: packages/core-utils/src/strings.ts:556

Parameters

Parameter	Type
`input`	`unknown`

Returns

boolean

isPort()

isPort(input): boolean

Defined in: packages/core-utils/src/strings.ts:544

Parameters

Parameter	Type
`input`	`unknown`

Returns

boolean

isPostalCode()

isPostalCode(input, locale?): boolean

Defined in: packages/core-utils/src/strings.ts:540

Parameters

Parameter	Type	Default value
`input`	`unknown`	`undefined`
`locale`	`"any"` \| `PostalCodeLocale`	`'any'`

Returns

boolean

isPrimitiveValue()

isPrimitiveValue(value): boolean

Defined in: packages/core-utils/src/strings.ts:85

Check if a value is a JavaScript primitive value OR it is object with Symbol.toPrimitive

Parameters

Parameter	Type
`value`	`unknown`

Returns

boolean

isString()

isString(val): val is string

Defined in: packages/core-utils/src/strings.ts:17

A simplified implementation of lodash isString

Parameters

Parameter	Type
`val`	`unknown`

Returns

val is string

isURL()

isURL(input): boolean

Defined in: packages/core-utils/src/strings.ts:493

Parameters

Parameter	Type
`input`	`unknown`

Returns

boolean

isUUID()

isUUID(input, version?): boolean

Defined in: packages/core-utils/src/strings.ts:497

Parameters

Parameter	Type	Default value
`input`	`unknown`	`undefined`
`version`	`UUIDVersion`	`'all'`

Returns

boolean

joinList()

joinList(input, sep?, join?): string

Defined in: packages/core-utils/src/strings.ts:585

Create a sentence from a list (all items will be unique, empty values will be skipped)

Parameters

Parameter	Type	Default value
`input`	`JoinListType`[] \| readonly `JoinListType`[]	`undefined`
`sep`	`string`	`','`
`join`	`string`	`'and'`

Returns

string

parseList()

parseList(input): string[]

Defined in: packages/core-utils/src/strings.ts:564

Maps an array of strings and and trims the result, or parses a comma separated list and trims the result

Parameters

Parameter	Type
`input`	`unknown`

Returns

string[]

primitiveToString()

primitiveToString(value): string

Defined in: packages/core-utils/src/strings.ts:100

Convert a JavaScript primitive value to a string. (Does not covert object like entities unless Symbol.toPrimitive is specified)

Parameters

Parameter	Type
`value`	`unknown`

Returns

string

shannonEntropy()

shannonEntropy(input): number

Defined in: packages/core-utils/src/strings.ts:619

Performs a Shannon entropy calculation on string inputs

Parameters

Parameter	Type
`input`	`unknown`

Returns

number

startsWith()

startsWith(str, val): boolean

Defined in: packages/core-utils/src/strings.ts:197

A native implementation of lodash startsWith

Parameters

Parameter	Type
`str`	`unknown`
`val`	`unknown`

Returns

boolean

startsWithFP()

startsWithFP(val): (input) => boolean

Defined in: packages/core-utils/src/strings.ts:205

A function version of startsWith

Parameters

Parameter	Type
`val`	`string`

Returns

(input) => boolean

stringEntropy()

stringEntropy(algo?): StringEntropyFN

Defined in: packages/core-utils/src/strings.ts:657

returns a function to perform entropy calculations, currently only supports the "shannon" algorithm

Parameters

Parameter	Type	Default value
`algo`	`shannon`	`StringEntropy.shannon`

Returns

StringEntropyFN

toCamelCase()

toCamelCase(input): string

Defined in: packages/core-utils/src/strings.ts:386

Parameters

Parameter	Type
`input`	`string`

Returns

string

toKebabCase()

toKebabCase(input): string

Defined in: packages/core-utils/src/strings.ts:394

Parameters

Parameter	Type
`input`	`string`

Returns

string

toLowerCase()

toLowerCase(input): string

Defined in: packages/core-utils/src/strings.ts:172

Converts a value to lower case

Parameters

Parameter	Type
`input`	`unknown`

Returns

string

Example

toLowerCase('lowercase'); // 'lowercase'
    toLowerCase('MixEd'); // 'mixed'
    toLowerCase('UPPERCASE'); // 'uppercase'

toPascalCase()

toPascalCase(input): string

Defined in: packages/core-utils/src/strings.ts:390

Parameters

Parameter	Type
`input`	`string`

Returns

string

toSafeString()

toSafeString(input): string

Defined in: packages/core-utils/src/strings.ts:413

Make a string url/elasticsearch safe. safeString converts the string to lower case, removes any invalid characters, and replaces whitespace with _ (if it exists in the string) or - Warning this may reduce the str length

Parameters

Parameter	Type
`input`	`string`

Returns

string

toSnakeCase()

toSnakeCase(input): string

Defined in: packages/core-utils/src/strings.ts:398

Parameters

Parameter	Type
`input`	`string`

Returns

string

toString()

toString(val): string

Defined in: packages/core-utils/src/strings.ts:32

Safely convert any input to a string

Parameters

Parameter	Type
`val`	`unknown`

Returns

string

Example

toString(1); // '1'
    toString(0.01); // '0.01'
    toString(true); // 'true'
    toString(BigInt(2) ** BigInt(64)); // '18,446,744,073,709,551,616'
    toString(new Date('2020-09-23T14:54:21.020Z')) // '2020-09-23T14:54:21.020Z'

toTitleCase()

toTitleCase(input): string

Defined in: packages/core-utils/src/strings.ts:402

Parameters

Parameter	Type
`input`	`string`

Returns

string

toUpperCase()

toUpperCase(input): string

Defined in: packages/core-utils/src/strings.ts:158

Converts a value to upper case

Parameters

Parameter	Type
`input`	`unknown`

Returns

string

Example

toUpperCase('lowercase'); // 'LOWERCASE'
    toUpperCase('MixEd'); // 'MIXED'
    toUpperCase('UPPERCASE'); // 'UPPERCASE'

trim()

trim(input, char?): string

Defined in: packages/core-utils/src/strings.ts:109

safely trims whitespace from an input

Parameters

Parameter	Type
`input`	`unknown`
`char?`	`string`

Returns

string

trimAndToLower()

trimAndToLower(input?): string

Defined in: packages/core-utils/src/strings.ts:140

safely trim and to lower a input, useful for string comparison

Parameters

Parameter	Type
`input?`	`string`

Returns

string

trimAndToUpper()

trimAndToUpper(input?): string

Defined in: packages/core-utils/src/strings.ts:145

safely trim and to lower a input, useful for string comparison

Parameters

Parameter	Type
`input?`	`string`

Returns

string

trimEnd()

trimEnd(input, char?): string

Defined in: packages/core-utils/src/strings.ts:129

Parameters

Parameter	Type
`input`	`unknown`
`char?`	`string`

Returns

string

trimEndFP()

trimEndFP(char?): (input) => string

Defined in: packages/core-utils/src/strings.ts:133

Parameters

Parameter	Type
`char?`	`string`

Returns

(input) => string

trimFP()

trimFP(char?): (input) => string

Defined in: packages/core-utils/src/strings.ts:113

Parameters

Parameter	Type
`char?`	`string`

Returns

(input) => string

trimStart()

trimStart(input, char?): string

Defined in: packages/core-utils/src/strings.ts:119

Parameters

Parameter	Type
`input`	`unknown`
`char?`	`string`

Returns

string

trimStartFP()

trimStartFP(char?): (input) => string

Defined in: packages/core-utils/src/strings.ts:123

Parameters

Parameter	Type
`char?`	`string`

Returns

(input) => string

truncate()

truncate(value, len, ellipsis?): string

Defined in: packages/core-utils/src/strings.ts:235

Truncate a string value, by default it will add an ellipsis (...) if truncated.

Parameters

Parameter	Type	Default value
`value`	`unknown`	`undefined`
`len`	`number`	`undefined`
`ellipsis`	`boolean`	`true`

Returns

string

truncateFP()

truncateFP(len, ellipsis?): (value) => string

Defined in: packages/core-utils/src/strings.ts:250

A functional version of truncate

Parameters

Parameter	Type	Default value
`len`	`number`	`undefined`
`ellipsis`	`boolean`	`true`

Returns

(value) => string

unescapeString()

unescapeString(str?): string

Defined in: packages/core-utils/src/strings.ts:178

Unescape characters in string and avoid double escaping

Parameters

Parameter	Type	Default value
`str`	`string`	`''`

Returns

string

Enumerations​

Type Aliases​

StringEntropyFN​

Parameters​

Returns​

Variables​

LOWER_CASE_CHARS​

Type Declaration​

a​

b​

c​

d​

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f​

g​

h​

i​

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k​

l​

m​

n​

o​

p​

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t​

u​

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x​

y​

z​

NUM_CHARS​

Type Declaration​

0​

1​

2​

3​

4​

5​

6​

7​

8​

9​

UPPER_CASE_CHARS​

Type Declaration​

A​

B​

C​

D​

E​

F​

G​

H​

I​

J​

K​

L​

M​

N​

O​

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T​

U​

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WORD_CHARS​

Type Declaration​

0​

1​

2​

3​

Enumerations

Type Aliases

StringEntropyFN

Parameters

Returns

Variables

LOWER_CASE_CHARS

Type Declaration

a

b

c

d

e

f

g

h

i

j

k

l

m

n

o

p

q

r

s

t

u

v

w

x

y

z

NUM_CHARS

Type Declaration

0

1

2

3

4

5

6

7

8

9

UPPER_CASE_CHARS

Type Declaration

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

WORD_CHARS

Type Declaration

0

1

2

3