🎉 NEW: add midTrim (#714)

.changeset/red-schools-chew.md

@@ -0,0 +1,5 @@
+---
+'@kitql/helpers': patch
+---
+
+add midTrim function

packages/helpers/src/lib/index.ts

@@ -1,6 +1,6 @@
 export type { Prettify } from './Prettify.js'
 export { sleep } from './sleep.js'
-export { stry, stry0, stryEq } from './stry/stry.js'
+export { stry, stry0, stryEq, midTrim } from './stry/stry.js'
 
 export { Log } from './Log.js'
 export {

packages/helpers/src/lib/stry/stry.spec.ts

@@ -1,6 +1,6 @@
 import { describe, expect, it } from 'vitest'
 
-import { stry, stry0, stryEq } from './stry.js'
+import { midTrim, stry, stry0, stryEq } from './stry.js'
 
 describe('kitql - helper - stry', () => {
   it('space 2', () => {
@@ -196,3 +196,47 @@ describe('kitql - helper - stryEq', () => {
     expect(result).toBe(false)
   })
 })
+
+describe('kitql - helper - midTrim', () => {
+  it('midTrim 0', () => {
+    const x = midTrim('A')
+    expect(x).toBe(x)
+  })
+
+  it('midTrim 1', () => {
+    const x = midTrim('Auth - Users sessions')
+    expect(x).toBe(x)
+  })
+
+  it('midTrim 2', () => {
+    const i = '#######0123456789#######'
+    expect(i.length).toBe(24)
+    const x = midTrim(i)
+    expect(x.length).toBe(21)
+    expect(x).toBe('#######01...89#######')
+  })
+
+  it('midTrim 3', () => {
+    const i = '#######01234567890#######'
+    expect(i.length).toBe(25)
+    const x = midTrim(i)
+    expect(x.length).toBe(21)
+    expect(x).toBe('#######01...90#######')
+  })
+
+  it('midTrim 4', () => {
+    const i = '#######01234567890#######'
+    expect(i.length).toBe(25)
+    const x = midTrim(i, { midStr: '_' })
+    expect(x.length).toBe(21)
+    expect(x).toBe('#######012_890#######')
+  })
+
+  it('midTrim 5', () => {
+    const i = '0123456789'
+    expect(i.length).toBe(10)
+    const x = midTrim(i, { len: 3, midStr: '_' })
+    expect(x.length).toBe(3)
+    expect(x).toBe('0_9')
+  })
+})

packages/helpers/src/lib/stry/stry.ts

@@ -31,3 +31,15 @@ export function stry(
 export function stryEq(obj1: object | null | undefined, obj2: object | null | undefined): boolean {
   return stry0(obj1) === stry0(obj2)
 }
+
+export function midTrim(str: string, o?: { len?: number; midStr?: string }): string {
+  const len = o?.len || 21
+  if (str.length > len) {
+    const midStr = o?.midStr || '...'
+    const reducedLen = len - midStr.length
+    const trimLength = Math.floor(reducedLen / 2)
+    return `${str.slice(0, trimLength).trim()}${midStr}${str.slice(-trimLength).trim()}`
+  }
+
+  return str
+}