Explore strategies for shipping high-quality JavaScript applications with confidence in this 22-minute conference talk. Dive into "The Testing Spectrum," a comprehensive approach encompassing tools, practices, and mindsets for delivering superior code to production. Learn about essential techniques ranging from code formatting with Prettier to post-release monitoring. Discover how to implement strict mode, enhance type safety with TypeScript, leverage testing playgrounds, prioritize accessibility, and improve user experience. Gain insights into Cypress for testing, API interception, and innovative post-release practices like DAC Fooding and testing in production. Understand the importance of feedback loops and walk away with practical tips to elevate your JavaScript development process and minimize production incidents.