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Published on 23.01.2026
jQuery 4.0.0 marks a major milestone 20 years after its introduction, dropping old browser support and embracing modern standards. Meanwhile, early-stage startups learn to avoid premature management structures that can hinder engineering productivity.
TLDR: jQuery 4.0.0 drops support for old browsers like IE10 and introduces modern features after a decade since the last major release.
After 20 years since its introduction and nearly 10 years since the last major version, the jQuery team has released jQuery 4.0.0 with significant improvements and modernizations. This release includes breaking changes that trim legacy code and remove previously-deprecated APIs, representing a major step toward modern JavaScript development.
Key improvements in jQuery 4.0.0 include:
The removal of deprecated APIs combined with the elimination of code supporting old IE resulted in a size reduction of over 3KB gzipped. The migration to ES modules makes jQuery compatible with modern development workflows and browsers through the use of <script type=module>.
For architects and teams maintaining legacy applications, jQuery 4.0.0 represents a significant evolution that may require careful migration planning. The team has provided an upgrade guide and jQuery Migrate plugin to assist with transitions.
jQuery 4.0.0 | Official jQuery Blog
TLDR: Multiple CVEs affect Svelte packages, highlighting the importance of keeping dependencies updated.
The Svelte team has released patches for 5 vulnerabilities across devalue, svelte, @sveltejs/kit, and @sveltejs/adapter-node. Affected users should upgrade to non-vulnerable versions: devalue 5.6.2, svelte 5.46.4, @sveltejs/kit 2.49.5, and @sveltejs/adapter-node 5.5.1.
The vulnerabilities include:
Some vulnerabilities specifically affect SvelteKit applications using experimental remote functions, while others impact applications with prerendered routes. The SSRF vulnerability is particularly concerning as it could allow access to internal resources without authentication.
For architects and teams using Svelte, this highlights the importance of regularly updating dependencies and monitoring security advisories. The vulnerabilities demonstrate how seemingly minor parsing functions can become attack vectors in complex applications.
CVEs affecting the Svelte ecosystem
TLDR: Early-stage startups should avoid premature management structures and focus on hiring motivated engineers instead of trying to motivate them.
For early-stage startups (Seed, Series A), founders often mistakenly believe they need to implement engineering management practices to address issues like team motivation, project structuring, and shipping on time. However, the correct solution is often to do nothing and focus on building product and talking to users.
Key anti-patterns to avoid include:
Instead, founders should focus on hiring inherently motivated engineers and maintaining an environment where they want to do their best work. At the founding stage (5-6 engineers), teams should largely be self-organizing with lightweight tooling. Even at the multi-team stage (10-15 people), it's recommended that all engineers report to a single person (ideally the CTO) to maintain speed of execution and culture.
For architects and teams in early-stage companies, this suggests that premature organizational complexity can be more harmful than beneficial. The focus should remain on hiring exceptional people who work well together rather than implementing formal management structures.
No management needed: anti-patterns in early-stage engineering teams
This newsletter summary was automatically generated. The content reflects the views of the original authors and not necessarily those of the generator. Please refer to the original sources for complete information and context.