Zero-Garbage Collection
JSON Diff Engine.
Production-ready NPM package with SIMD-accelerated Rust core. npm install diffcore — zero toolchain required.
Why standard JS parsing fails at scale — and why DiffCore doesn’t.
When JSON payloads grow, JavaScript parsers allocate millions of objects. The V8 engine eventually freezes execution to clean them up.
DiffCore avoids the causes entirely: garbage collection, recursive traversal, JS object graphs, heap churn
End-to-End Diff Latency (10MB JSON)
* DiffCore parses + diffs in a single streaming pass. Auto memory cleanup via FinalizationRegistry.
How DiffCore Bypasses the JavaScript Runtime
JavaScript Heap
Objects, recursion, garbage collection.
Unbounded latency.
WASM Linear Memory
Single contiguous buffer. Zero-copy writes.
No heap growth.
Native SIMD Engine
Single-pass structural diff.
Deterministic latency.
This architecture is exposed directly to JavaScript through a minimal WASM interface.
Performance Verification
Live metrics from compilation
10MB Parsing Latency
Time to complete full diffThroughput
Raw data processing speedMetric Definitions
Pre-compiled WASM bundled as Base64. Zero toolchain required - just npm install.
FinalizationRegistry automatically frees WASM memory when engines are garbage collected.
Direct Memory Access. DiffCore reads native memory directly, bypassing the slow JavaScript heap.
Parse and diff in a single pass. Processes chunks without building full object tree.
Get Started in 3 Steps
Install from NPM
Pre-compiled WASM included. No Rust toolchain required.
npm install diffcoreOne-Line Diff
Zero-config API with embedded WASM auto-loading.
Streaming Mode
For large files, use the streaming engine with automatic memory management.