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core-js vs TypeScript

Based on 1599 and 72 real audits

View core-js details | View TypeScript details
Metriccore-jsTypeScriptWinner
Performance3634core-js
Accessibility8890TypeScript
Best Practices8490TypeScript
SEO9190core-js
Security6567TypeScript
TTFB379ms317msTypeScript
Composite7273TypeScript
Performance
core-js
36
TypeScript
34
Accessibility
core-js
88
TypeScript
90
Security
core-js
65
TypeScript
67
SEO
core-js
91
TypeScript
90
Composite
core-js
72
TypeScript
73

TypeScript outperforms core-js in 5 of 7 categories, with a stronger composite score (73 vs 72). core-js leads in performance, SEO.

When to choose core-js

Choose core-js when your primary concern is performance and SEO. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose TypeScript

Choose TypeScript when your primary concern is server response time and best practices. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 1599 audited core-js sites and 72 audited TypeScript sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →

FAQ

Which is faster, core-js or TypeScript?
Based on real BeaverCheck audits, core-js sites score higher on Lighthouse performance (36 vs 34 on average).
Which has better security, core-js or TypeScript?
TypeScript sites score higher on security analysis (67 vs 65 on average).
Which has better accessibility, core-js or TypeScript?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor TypeScript (90 vs 88). Both technologies can be made fully accessible with care — the difference reflects common patterns in the sampled sites, not inherent platform limits.
Which is better for SEO, core-js or TypeScript?
core-js sites score higher on Lighthouse SEO signals (91 vs 90 on average), which cover meta tags, crawlability, mobile friendliness, and structured data. Content strategy and backlinks still matter more than platform choice for ranking.
Which has faster server response (TTFB), core-js or TypeScript?
TypeScript sites show lower Time to First Byte (317 ms vs 379 ms on average). TTFB depends heavily on hosting and CDN setup rather than the technology itself, but the sampled sites suggest a meaningful difference in common deployment patterns.
Should I choose core-js or TypeScript for my website?
Both platforms have trade-offs. core-js scores higher on overall composite score while core-js may excel in metrics you care about most. Run a free BeaverCheck audit on a real site using each to compare the metrics relevant to your use case.
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