Does polling for conditions waste CPU resources?

This skill recommends a standard 10ms polling interval, which balances responsiveness with CPU efficiency, avoiding the overhead of polling too frequently.

How does this skill improve CI/CD reliability?

CI environments often experience unpredictable CPU load; by waiting for actual state changes rather than time, tests become resilient to environmental lag.

Why is condition-based waiting better than using sleep or setTimeout?

Sleep functions are guesses that lead to failures on slow machines or wasted time on fast ones. Condition polling ensures the test proceeds the instant the application is ready.

Can this skill be used with any testing framework?

Yes, the patterns provided by this skill are framework-agnostic and can be implemented in Jest, Vitest, Mocha, Playwright, or custom testing setups.

When should I still use an arbitrary timeout?

Fixed timeouts should only be used when you are testing actual timing behavior, such as verifying a debounce interval or a throttle period, and should always be documented.

Condition-Based Waiting

Name: Condition-Based Waiting
Author: lifangda

bylifangda

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Security & Testing

Eliminates flaky test behavior by replacing arbitrary timeouts with intelligent condition polling and state verification.

Condition-Based Waiting is a specialized Claude Code skill designed to solve the common problem of flaky tests caused by timing dependencies and race conditions. Instead of using arbitrary delays like setTimeout or sleep, which often lead to inconsistent results across different environments or CI pipelines, this skill implements robust polling patterns that wait for specific state changes, events, or data availability. It provides a standardized approach to asynchronous testing, ensuring that tests only proceed when the required conditions are met, resulting in significantly faster, more reliable, and maintainable test suites.

Key Features

01Includes built-in timeout management to prevent infinite execution loops

02Standardizes asynchronous testing patterns across entire codebases

03Replaces fixed timeouts with dynamic condition-based polling

0416 GitHub stars

05Provides patterns for waiting on events, state changes, and file system updates

06Reduces total test execution time by avoiding unnecessary wait periods

Use Cases

01Optimizing test suite performance by eliminating arbitrary sleep calls

02Testing complex asynchronous operations like file processing or network events

03Fixing flaky integration tests that fail intermittently in CI environments

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add lifangda/claude-plugins condition-based-waiting

For use in Claude.ai and ChatGPT

Download Skill