TypeScript Without tsc in 2026: Type-Stripping in Node.js 24, Bun, and Deno Compared

Short summary

Node.js 24, Bun, and Deno enable TypeScript execution via type-stripping, eliminating transpilation overhead. Node.js achieves 8ms parsing with --experimental-strip-types; Bun reaches 4ms but locks code to proprietary APIs; Deno offers security through permission boundaries. All skip compile-time type validation, requiring CI checks and integration tests to catch errors at runtime.

• •Type-stripping separates execution speed from type correctness, deferring validation to CI pipelines
• •Node.js 24: 8ms overhead with full compatibility; Bun: 4ms but vendor-specific; Deno: security-first with cached runs
• •Tradeoff: missing properties surface as JavaScript TypeErrors at runtime, not compile-time diagnostics

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