The real C++ Book (order pool + intrusive FIFO + flat levels +
occupancy bitmap) compiled to WebAssembly, running live in your browser.
source
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best bid
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best ask
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mid
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open orders
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events
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trades
Book depth around the touch — bids (green) left, asks
(red) right, bar length = resting quantity per level.
Trade feed
Every event is applied by the same compiled C++ the benchmarks measure —
no JS reimplementation. Event tape is generated deterministically by the
project's own synthetic-market generator (seeded, reproducible).