Files
react-native-devtools-frontend/node_modules/nanoid/index.browser.js
T
Alex Rudenko 7042abca0b Update mocha to 9.2.2
- fixes a vulnerable dependency
- sorts devDependencies in asc order (done by npm)
- manage_node_deps should --save-exact version by default

Fixed: 333413840
Change-Id: Iaa670259db9771dab89c72214c17d0420e02eaa3
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/5439476
Reviewed-by: Simon Zünd <szuend@chromium.org>
Commit-Queue: Alex Rudenko <alexrudenko@chromium.org>
2024-04-10 05:58:47 +00:00

38 lines
1.1 KiB
JavaScript

import { urlAlphabet } from './url-alphabet/index.js'
let random = bytes => crypto.getRandomValues(new Uint8Array(bytes))
let customRandom = (alphabet, defaultSize, getRandom) => {
let mask = (2 << (Math.log(alphabet.length - 1) / Math.LN2)) - 1
let step = -~((1.6 * mask * defaultSize) / alphabet.length)
return (size = defaultSize) => {
let id = ''
while (true) {
let bytes = getRandom(step)
let j = step
while (j--) {
id += alphabet[bytes[j] & mask] || ''
if (id.length === size) return id
}
}
}
}
let customAlphabet = (alphabet, size = 21) =>
customRandom(alphabet, size, random)
let nanoid = (size = 21) => {
let id = ''
let bytes = crypto.getRandomValues(new Uint8Array(size))
while (size--) {
let byte = bytes[size] & 63
if (byte < 36) {
id += byte.toString(36)
} else if (byte < 62) {
id += (byte - 26).toString(36).toUpperCase()
} else if (byte < 63) {
id += '_'
} else {
id += '-'
}
}
return id
}
export { nanoid, customAlphabet, customRandom, urlAlphabet, random }