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authorakiyamn2023-09-24 23:22:21 +1000
committerakiyamn2023-09-24 23:22:21 +1000
commit4e87195739f2a5d9a05451b48773c8afdc680765 (patch)
tree9cba501844a4a11dcbdffc4050ed8189561c55ed /node_modules/nanoid/async/index.cjs
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Initial commit (by create-cloudflare CLI)
Diffstat (limited to 'node_modules/nanoid/async/index.cjs')
-rw-r--r--node_modules/nanoid/async/index.cjs35
1 files changed, 35 insertions, 0 deletions
diff --git a/node_modules/nanoid/async/index.cjs b/node_modules/nanoid/async/index.cjs
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--- /dev/null
+++ b/node_modules/nanoid/async/index.cjs
@@ -0,0 +1,35 @@
+let crypto = require('crypto')
+let { urlAlphabet } = require('../url-alphabet/index.cjs')
+let random = bytes =>
+ new Promise((resolve, reject) => {
+ crypto.randomFill(Buffer.allocUnsafe(bytes), (err, buf) => {
+ if (err) {
+ reject(err)
+ } else {
+ resolve(buf)
+ }
+ })
+ })
+let customAlphabet = (alphabet, defaultSize = 21) => {
+ let mask = (2 << (31 - Math.clz32((alphabet.length - 1) | 1))) - 1
+ let step = Math.ceil((1.6 * mask * defaultSize) / alphabet.length)
+ let tick = (id, size = defaultSize) =>
+ random(step).then(bytes => {
+ let i = step
+ while (i--) {
+ id += alphabet[bytes[i] & mask] || ''
+ if (id.length === size) return id
+ }
+ return tick(id, size)
+ })
+ return size => tick('', size)
+}
+let nanoid = (size = 21) =>
+ random(size).then(bytes => {
+ let id = ''
+ while (size--) {
+ id += urlAlphabet[bytes[size] & 63]
+ }
+ return id
+ })
+module.exports = { nanoid, customAlphabet, random }