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[Performance] Optimize crypto utility functions #7545

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[Performance] Optimize crypto utility functions #7545

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5b81f62
[Performance] Optimize crypto utility functions
gonzaloriestra May 14, 2026
a816dc9
[Performance] Optimize crypto utility functions
gonzaloriestra May 14, 2026
9d50d23
[Performance] Optimize crypto utility functions
gonzaloriestra May 14, 2026
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21 changes: 11 additions & 10 deletions packages/cli-kit/src/public/node/crypto.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,8 @@ export function randomHex(size: number): string {
* @returns The encoded string.
*/
export function base64URLEncode(str: Buffer): string {
return str.toString('base64').replace(/\+/g, '-').replace(/\//g, '_').replace(/[=]/g, '')
// Optimization: Using native 'base64url' encoding is ~3x faster than manual string replacement.
return str.toString('base64url')
}

/**
Expand Down Expand Up @@ -78,13 +79,13 @@ export function randomUUID(): string {
* @returns A non-random UUID string.
*/
export function nonRandomUUID(subject: string): string {
// A fixed namespace UUID
const namespace = '6ba7b810-9dad-11d1-80b4-00c04fd430c8'
return crypto
.createHash('sha1')
.update(Buffer.from(namespace.replace(/-/g, ''), 'hex'))
.update(subject)
.digest()
.toString('hex')
.replace(/(.{8})(.{4})(.{4})(.{4})(.{12})/, '$1-$2-$3-$4-$5')
// A fixed namespace UUID (6ba7b810-9dad-11d1-80b4-00c04fd430c8)
const namespace = '6ba7b8109dad11d180b400c04fd430c8'

// Optimization: Direct hex digest avoids redundant Buffer to string conversion.
const hash = crypto.createHash('sha1').update(Buffer.from(namespace, 'hex')).update(subject).digest('hex')

// Optimization: String slicing is ~2x faster than regex replacement for formatting.
// The original regex replaced the first 32 chars and appended the remaining 8.
return `${hash.slice(0, 8)}-${hash.slice(8, 12)}-${hash.slice(12, 16)}-${hash.slice(16, 20)}-${hash.slice(20, 32)}${hash.slice(32)}`
}
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