js-early-exit

Return early when result is determined to skip unnecessary processing. This optimization is especially valuable when the skipped branch is frequently taken or when the deferred operation is expensive.

Incorrect (processes all items even after finding answer):

```typescript

function validateUsers(users: User[]) {

let hasError = false

let errorMessage = ''

for (const user of users) {

if (!user.email) {

hasError = true

errorMessage = 'Email required'

}

if (!user.name) {

hasError = true

errorMessage = 'Name required'

}

// Continues checking all users even after error found

}

return hasError ? { valid: false, error: errorMessage } : { valid: true }

}

```

Correct (returns immediately on first error):

```typescript

function validateUsers(users: User[]) {

for (const user of users) {

if (!user.email) {

return { valid: false, error: 'Email required' }

}

if (!user.name) {

return { valid: false, error: 'Name required' }

}

}

return { valid: true }

}

```