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The Deno adapter uses Deno.dlopen to load the Zinc shared library. Like the Bun adapter, no native addon is needed. The FFI bindings are defined at runtime in TypeScript.

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Installation

deno add @aspect-build/zinc
Requires Deno 1.33 or later with --allow-ffi and --allow-read permissions.

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SharedRegion

import { SharedRegion } from "@aspect-build/zinc";

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create

const region = SharedRegion.create("my-data", 4096);
Creates a new region. Throws on failure.

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open

const region = SharedRegion.open("my-data");
Opens an existing region.

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buffer

Returns a Uint8Array backed by the shared memory mapping. Uses Deno.UnsafePointerView.getArrayBuffer for zero-copy access. 
const buf = region.buffer();
const view = new DataView(buf.buffer);
view.setFloat32(0, 3.14, true);

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notify

region.notify();

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wait

const ok = region.wait(1000);
Returns true on notification, false on timeout.

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close

region.close();
Supports Symbol.dispose for using declarations: 
using region = SharedRegion.open("my-data");
const buf = region.buffer();

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Complete example

import { SharedRegion } from "@aspect-build/zinc";

// Writer
const w = SharedRegion.create("deno-channel", 4096);
const buf = w.buffer();
const view = new DataView(buf.buffer);
view.setFloat64(0, 2.71828, true);
w.notify();

setTimeout(() => w.close(), 5000);

// Reader (separate process)
const r = SharedRegion.open("deno-channel");
if (r.wait(3000)) {
    const data = r.buffer();
    const v = new DataView(data.buffer);
    console.log(v.getFloat64(0, true)); // 2.71828
}
r.close();

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Permissions

The adapter requires these Deno permissions:
  • --allow-ffi to call Deno.dlopen
  • --allow-read to locate the shared library
Without these, the import will fail with a permission error.

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FFI details

The library path is resolved relative to the adapter’s Deno module location. The suffix is determined from Deno.build.os: .dylib on macOS, .so on Linux. windows is not mapped — Zinc does not support Windows. Pointer values are represented as Deno.PointerValue (which is number | null on 32-bit and bigint | null on 64-bit).