804b384271
- Add npm scripts for CSS/JS compilation (build:css, build:js, build) - Create PowerShell build automation script - Document development workflow in README - Add troubleshooting guide for build issues - Specify proper file structure and compilation process Supports Tailwind CSS v3.4.0 and esbuild bundling with source maps.
46 lines
1.3 KiB
JavaScript
46 lines
1.3 KiB
JavaScript
import crypto from 'crypto'
|
|
import { urlAlphabet } from './url-alphabet/index.js'
|
|
const POOL_SIZE_MULTIPLIER = 128
|
|
let pool, poolOffset
|
|
let fillPool = bytes => {
|
|
if (!pool || pool.length < bytes) {
|
|
pool = Buffer.allocUnsafe(bytes * POOL_SIZE_MULTIPLIER)
|
|
crypto.randomFillSync(pool)
|
|
poolOffset = 0
|
|
} else if (poolOffset + bytes > pool.length) {
|
|
crypto.randomFillSync(pool)
|
|
poolOffset = 0
|
|
}
|
|
poolOffset += bytes
|
|
}
|
|
let random = bytes => {
|
|
fillPool((bytes |= 0))
|
|
return pool.subarray(poolOffset - bytes, poolOffset)
|
|
}
|
|
let customRandom = (alphabet, defaultSize, getRandom) => {
|
|
let mask = (2 << (31 - Math.clz32((alphabet.length - 1) | 1))) - 1
|
|
let step = Math.ceil((1.6 * mask * defaultSize) / alphabet.length)
|
|
return (size = defaultSize) => {
|
|
let id = ''
|
|
while (true) {
|
|
let bytes = getRandom(step)
|
|
let i = step
|
|
while (i--) {
|
|
id += alphabet[bytes[i] & mask] || ''
|
|
if (id.length === size) return id
|
|
}
|
|
}
|
|
}
|
|
}
|
|
let customAlphabet = (alphabet, size = 21) =>
|
|
customRandom(alphabet, size, random)
|
|
let nanoid = (size = 21) => {
|
|
fillPool((size |= 0))
|
|
let id = ''
|
|
for (let i = poolOffset - size; i < poolOffset; i++) {
|
|
id += urlAlphabet[pool[i] & 63]
|
|
}
|
|
return id
|
|
}
|
|
export { nanoid, customAlphabet, customRandom, urlAlphabet, random }
|