js-early-exit
Uses early returns in JavaScript to simplify code and improve execution efficiency.
Install
mkdir -p .claude/skills/js-early-exit && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/3040" && unzip -o skill.zip -d .claude/skills/js-early-exit && rm skill.zipInstalls to .claude/skills/js-early-exit
Activation
This is the description your AI agent reads to decide when to run this skill — the better it matches your request, the more reliably it fires.
Use early returns to avoid unnecessary computation in loops and functions. Apply when processing arrays, validating input, or checking multiple conditions where the result can be determined before all iterations complete.Key capabilities
- →Iterate through data structures with early exits
- →Short-circuit complex validation logic
- →Terminate function execution upon finding invalid states
- →Bypass redundant loop iterations
- →Improve performance of search-based algorithms
How it works
Applies explicit 'return' or 'break' statements inside conditional blocks immediately after a target condition is met.
Inputs & outputs
When to use js-early-exit
- →Simplifying complex validation functions
- →Optimizing array processing loops
- →Removing unnecessary computation in conditional checks
About this skill
Early Return from Functions
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):
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):
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 }
}
When not to use it
- →Operations requiring side-effects for every element
- →Transformations where every item must be mapped or processed
Limitations
- →Can lead to code duplication if error handling isn't centralized
- →Harder to debug if exit points are excessive
How it compares
It eliminates nested if-else structures or unnecessary flagging variables, resulting in flatter and more readable code.
Compared to similar skills
js-early-exit side by side with the closest alternatives in the catalog.
| Skill | Installs | Updated | Safety | Difficulty |
|---|---|---|---|---|
| js-early-exit (this skill) | 1 | 6mo | No flags | Beginner |
| typescript-review | 39 | 2mo | No flags | Intermediate |
| react-modernization | 21 | 2mo | No flags | Advanced |
| antfu | 6 | 3mo | Review | Intermediate |
Try saying
Example prompts that trigger this skill in your AI assistant.
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