S (String)

Non-dual

trim(s: string): string
trimStart(s: string): string
trimEnd(s: string): string
toLowerCase(s: string): string
toUpperCase(s: string): string
isEmpty(s: string): boolean
length(s: string): number

Dual

startsWith(s: string, search: string): boolean
endsWith(s: string, search: string): boolean
includes(s: string, search: string): boolean
split(s: string, sep: string): string[]
repeat(s: string, n: number): string
slice(s: string, start: number, end: number): string
replaceAll(s: string, search: string, replacement: string): string

Examples

import { pipe, S } from '@stopcock/fp'

// slug from title
pipe('  Hello World!  ', S.trim, S.toLowerCase, S.replaceAll(' ', '-'), S.replaceAll('!', ''))
// 'hello-world'

// parse CSV header
pipe('name,email,role', S.split(','))
// ['name', 'email', 'role']

// check file extension
pipe('report.pdf', S.endsWith('.pdf'))  // true

// template
pipe('Hello, NAME!', S.replaceAll('NAME', user.name))

// truncate
const preview = pipe(description, S.slice(0, 100))