feat(watermark): add browser/Deno ESM entry (@claude-flow/watermark 0.2.0) (#3041)

Adds a `@claude-flow/watermark/web` ESM entry (wasm-pack `--target web`) so the package works in browsers, Deno, and bundlers — not just Node. Instantiate once with `await init()` (auto-fetches the wasm in a browser; accepts bytes/URL/ Response), then the same ergonomic API (Watermarker, detect, detectSelfSync, detectExact) as the Node build. - package.json: conditional exports (`.` = Node CJS/ESM, `./web` = browser ESM, `./package.json` re-exported); web/ marked ESM via a nested package.json. - build:wasm now builds both nodejs and web targets. - Added test/smoke-web.mjs; `npm test` runs Node + web. Both verified, plus a fresh dual-entry tarball install (node z=64.7, web z=64.7). Bumps to 0.2.0 (new capability, backward-compatible). No removal tooling. Claude-Session: https://claude.ai/code/session_01VYDa3Hah5VJLS2ceEuTLKz
2026-09-14 14:01:28 +08:00 · 2026-08-15 19:18:24 -04:00
parent 72fb129397
commit fa13ee4ad6
12 changed files with 749 additions and 20 deletions
@@ -63,11 +63,35 @@ console.log(r.zScore, r.log10P, r.isWatermarked(1e-6)); // strong, true
 key sees nothing. Confidence grows with the number of low-stakes token choices,
 so short or low-entropy (factual/code) text carries little to no mark.

+## Browser / Deno / bundler
+
+The `@claude-flow/watermark/web` entry is an ESM build. Instantiate the WASM once
+with `await init()`, then use the same API. In a browser, `init()` with no
+argument fetches the sibling `.wasm`; pass a `URL` / `Response` / bytes to
+override.
+
+```js
+import { init, Watermarker, detect } from '@claude-flow/watermark/web';
+
+await init(); // browser: auto-fetches the wasm
+
+const wm = new Watermarker({ key: '8F3A91C7', scheme: 'gumbel' });
+const tokens = Uint32Array.from({ length: 128 }, (_, i) => i);
+const probs = new Float32Array(128).fill(1 / 128);
+const out = new Uint32Array(600);
+for (let i = 0; i < out.length; i++) out[i] = tokens[wm.step(tokens, probs)];
+wm.free();
+
+console.log(detect(out, { key: '8F3A91C7', scheme: 'gumbel' }).isWatermarked(1e-6));
+```
+
+The `.` entry is the Node (CommonJS) build shown earlier; the `/web` entry is for
+browser / Deno / bundlers.
+
 ## Scope

-This build targets Node (CommonJS). The bindings are generated from the Rust
-crate with `npm run build:wasm` (`wasm-pack --target nodejs`); browser/bundler
-targets can be produced the same way (`--target web`/`bundler`). The crate
-exposes more than this WASM surface — the Bayesian/Higher-Criticism detectors,
-the robustness-evaluation harness, the Darwin/flywheel detector tuner, and the
-authorized un-marked-generation governance path are Rust-only for now.
+Bindings are generated from the Rust crate with `npm run build:wasm`
+(`wasm-pack`, both `nodejs` and `web` targets). The crate exposes more than this
+WASM surface — the Bayesian/Higher-Criticism detectors, the robustness-evaluation
+harness, the Darwin/flywheel detector tuner, and the authorized un-marked-
+generation governance path are Rust-only for now.
@@ -1,7 +1,7 @@
 {
  "name": "@claude-flow/watermark",
-  "version": "0.1.0",
-  "description": "SynthID-Text-style LLM text watermarking (generation + detection) as a WASM module — Tournament / non-distortionary / distortion-free schemes, indel-robust and short-text detectors. No watermark-removal tooling.",
+  "version": "0.2.0",
+  "description": "SynthID-Text-style LLM text watermarking (generation + detection) as a WASM module — Tournament / non-distortionary / distortion-free schemes, indel-robust and short-text detectors. Node + browser. No watermark-removal tooling.",
  "license": "MIT",
  "author": "rUv <ruv@ruv.net>",
  "homepage": "https://github.com/ruvnet/ruflo/tree/main/v3/crates/ruflo-watermark",
@@ -24,6 +24,18 @@
  "type": "commonjs",
  "main": "index.js",
  "types": "index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./index.d.ts",
+      "require": "./index.js",
+      "import": "./index.js"
+    },
+    "./web": {
+      "types": "./web/index.d.ts",
+      "import": "./web/index.mjs"
+    },
+    "./package.json": "./package.json"
+  },
  "files": [
    "index.js",
    "index.d.ts",
@@ -31,6 +43,13 @@
    "wasm/ruflo_watermark_bg.wasm",
    "wasm/ruflo_watermark.d.ts",
    "wasm/ruflo_watermark_bg.wasm.d.ts",
+    "web/package.json",
+    "web/index.mjs",
+    "web/index.d.ts",
+    "web/ruflo_watermark.js",
+    "web/ruflo_watermark_bg.wasm",
+    "web/ruflo_watermark.d.ts",
+    "web/ruflo_watermark_bg.wasm.d.ts",
    "README.md"
  ],
  "engines": {
@@ -41,6 +60,8 @@
  },
  "scripts": {
    "build:wasm": "bash scripts/build-wasm.sh",
-    "test": "node test/smoke.cjs"
+    "test": "node test/smoke.cjs && node test/smoke-web.mjs",
+    "test:node": "node test/smoke.cjs",
+    "test:web": "node test/smoke-web.mjs"
  }
 }
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
-# Regenerate the WASM bindings in ./wasm from the ruflo-watermark Rust crate.
+# Regenerate the WASM bindings from the ruflo-watermark Rust crate: the Node
+# (CommonJS) build in ./wasm and the browser/Deno (ESM) build in ./web.
 #
 # Requires: rustup + wasm32-unknown-unknown target + wasm-pack.
 #   rustup target add wasm32-unknown-unknown
@@ -12,15 +13,19 @@ set -euo pipefail
 here="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 crate="$here/../../crates/ruflo-watermark"

-CARGO_TARGET_WASM32_UNKNOWN_UNKNOWN_RUSTFLAGS="" RUSTFLAGS="" \
-  wasm-pack build --release --target nodejs \
-    --out-dir "$crate/pkg-nodejs" --out-name ruflo_watermark \
-    "$crate" -- --features wasm
+build() { # <target> <out-dir>
+  CARGO_TARGET_WASM32_UNKNOWN_UNKNOWN_RUSTFLAGS="" RUSTFLAGS="" \
+    wasm-pack build --release --target "$1" \
+      --out-dir "$crate/$2" --out-name ruflo_watermark \
+      "$crate" -- --features wasm
+}

-cp "$crate/pkg-nodejs/ruflo_watermark.js" \
-   "$crate/pkg-nodejs/ruflo_watermark_bg.wasm" \
-   "$crate/pkg-nodejs/ruflo_watermark.d.ts" \
-   "$crate/pkg-nodejs/ruflo_watermark_bg.wasm.d.ts" \
-   "$here/wasm/"
+files=(ruflo_watermark.js ruflo_watermark_bg.wasm ruflo_watermark.d.ts ruflo_watermark_bg.wasm.d.ts)

-echo "Rebuilt wasm/ from $crate"
+build nodejs pkg-nodejs
+for f in "${files[@]}"; do cp "$crate/pkg-nodejs/$f" "$here/wasm/"; done
+
+build web pkg-web
+for f in "${files[@]}"; do cp "$crate/pkg-web/$f" "$here/web/"; done
+
+echo "Rebuilt wasm/ (nodejs) and web/ (browser) from $crate"
@@ -0,0 +1,54 @@
+// Web-entry smoke test, run under Node ESM: init the WASM from bytes, then
+// generate + detect through the browser-facing API. Mirrors what a browser does
+// after `await init()` (in a browser, init() auto-fetches the .wasm).
+import { readFileSync } from 'node:fs';
+import { fileURLToPath } from 'node:url';
+import { dirname, join } from 'node:path';
+import { init, isReady, Watermarker, detect, detectSelfSync, detectExact } from '../web/index.mjs';
+
+const here = dirname(fileURLToPath(import.meta.url));
+const wasmBytes = readFileSync(join(here, '..', 'web', 'ruflo_watermark_bg.wasm'));
+
+let ok = true;
+const check = (name, cond, detail) => {
+  console.log(`  ${cond ? 'ok:  ' : 'FAIL:'} ${name} — ${detail}`);
+  if (!cond) ok = false;
+};
+
+// Guard before init.
+let threw = false;
+try {
+  detect(Uint32Array.from([1, 2, 3]), { key: 'k' });
+} catch {
+  threw = true;
+}
+check('throws before init()', threw, `isReady=${isReady()}`);
+
+await init(wasmBytes);
+check('isReady() after init', isReady(), 'true');
+
+const KEY = '8F3A91C7';
+const VOCAB = 128;
+const tokens = Uint32Array.from({ length: VOCAB }, (_, i) => i);
+const probs = new Float32Array(VOCAB).fill(1 / VOCAB);
+
+for (const scheme of ['tournament', 'tournament_nd', 'gumbel']) {
+  const wm = new Watermarker({ key: KEY, scheme, layers: 6 });
+  const out = new Uint32Array(600);
+  for (let i = 0; i < 600; i++) out[i] = tokens[wm.step(tokens, probs)];
+  wm.free();
+  const hit = detect(out, { key: KEY, scheme, layers: 6 });
+  const wrong = detect(out, { key: 'WRONG', scheme, layers: 6 });
+  check(`${scheme}: detects own output`, hit.isWatermarked(1e-6), `z=${hit.zScore.toFixed(1)}`);
+  check(`${scheme}: wrong key rejected`, !wrong.isWatermarked(1e-6), `z=${wrong.zScore.toFixed(2)}`);
+}
+
+const g = new Watermarker({ key: KEY, scheme: 'gumbel' });
+const gs = new Uint32Array(600);
+for (let i = 0; i < 600; i++) gs[i] = tokens[g.step(tokens, probs)];
+g.free();
+check('self-sync detector fires', detectSelfSync(gs, { key: KEY }).zScore > 8, 'z>8');
+check('exact short-text detector fires', detectExact(gs.slice(0, 120), { key: KEY }).log10P < -3, 'log10p<-3');
+
+console.log(ok ? '\nWEB SMOKE OK' : '\nWEB SMOKE FAILED');
+process.exit(ok ? 0 : 1);
@@ -0,0 +1,25 @@
+// Types for @claude-flow/watermark/web (browser / Deno / bundler entry).
+import type { Detection, Scheme, WatermarkerOptions, SelfSyncOptions } from '../index.d.ts';
+
+export type { Detection, Scheme, WatermarkerOptions, SelfSyncOptions };
+
+/** WASM init input: fetched URL/Response, raw bytes, or a compiled module. */
+export type InitInput = RequestInfo | URL | Response | BufferSource | WebAssembly.Module;
+
+/** Instantiate the WASM module. Await once before any other call. */
+export function init(input?: InitInput | Promise<InitInput>): Promise<void>;
+
+/** True once `init()` has completed. */
+export function isReady(): boolean;
+
+export class Watermarker {
+  constructor(opts: WatermarkerOptions);
+  step(tokens: Uint32Array | number[], probs: Float32Array | number[]): number;
+  free(): void;
+}
+
+export function detect(tokens: Uint32Array | number[], opts: WatermarkerOptions): Detection;
+export function detectSelfSync(tokens: Uint32Array | number[], opts: SelfSyncOptions): Detection;
+export function detectExact(tokens: Uint32Array | number[], opts: SelfSyncOptions): Detection;
+
+export const SCHEMES: ReadonlySet<Scheme>;
@@ -0,0 +1,89 @@
+// @claude-flow/watermark/web — browser / Deno / bundler ESM entry.
+//
+// The WASM must be instantiated before use: `await init()` once, then use the
+// same ergonomic API as the Node build. In a browser, `init()` with no argument
+// fetches the sibling `ruflo_watermark_bg.wasm`; pass a URL / Response /
+// BufferSource / WebAssembly.Module to override (e.g. in Node tests).
+//
+// Generation + detection only — no watermark-removal surface.
+
+import initWasm, {
+  WasmWatermarker,
+  detect as _detect,
+  detect_selfsync as _detectSelfSync,
+  detect_exact as _detectExact,
+} from './ruflo_watermark.js';
+
+let _ready = false;
+
+/** Instantiate the WASM module. Await once before any other call. */
+export async function init(input) {
+  if (_ready) return;
+  // Non-deprecated wasm-bindgen call shape; no arg => browser auto-fetch.
+  await initWasm(input === undefined ? undefined : { module_or_path: input });
+  _ready = true;
+}
+
+/** True once `init()` has completed. */
+export function isReady() {
+  return _ready;
+}
+
+function assertReady() {
+  if (!_ready) throw new Error('@claude-flow/watermark/web: call `await init()` before use');
+}
+
+const SCHEMES = new Set(['tournament', 'tournament_nd', 'gumbel']);
+const enc = new TextEncoder();
+const toKeyBytes = (k) => (typeof k === 'string' ? enc.encode(k) : k);
+const toU32 = (a) => (a instanceof Uint32Array ? a : Uint32Array.from(a));
+const toF32 = (a) => (a instanceof Float32Array ? a : Float32Array.from(a));
+function normScheme(s) {
+  const v = s || 'gumbel';
+  if (!SCHEMES.has(v)) throw new RangeError(`unknown scheme "${v}" (tournament | tournament_nd | gumbel)`);
+  return v;
+}
+function shape(r) {
+  const out = {
+    zScore: r.z_score,
+    pValue: r.p_value,
+    log10P: r.log10_p,
+    scoredPositions: r.scored_positions,
+    isWatermarked(alpha = 1e-6) {
+      return out.log10P <= Math.log10(alpha);
+    },
+  };
+  r.free();
+  return out;
+}
+
+/** Streaming watermarked sampler (call `await init()` first). */
+export class Watermarker {
+  constructor({ key, scheme = 'gumbel', contextWidth = 4, layers = 6 } = {}) {
+    assertReady();
+    this._inner = new WasmWatermarker(toKeyBytes(key), contextWidth, layers, normScheme(scheme));
+  }
+  step(tokens, probs) {
+    return this._inner.step(toU32(tokens), toF32(probs));
+  }
+  free() {
+    this._inner.free();
+  }
+}
+
+export function detect(tokens, { key, scheme = 'gumbel', contextWidth = 4, layers = 6 } = {}) {
+  assertReady();
+  return shape(_detect(toU32(tokens), toKeyBytes(key), contextWidth, layers, normScheme(scheme)));
+}
+
+export function detectSelfSync(tokens, { key, contextWidth = 4 } = {}) {
+  assertReady();
+  return shape(_detectSelfSync(toU32(tokens), toKeyBytes(key), contextWidth));
+}
+
+export function detectExact(tokens, { key, contextWidth = 4 } = {}) {
+  assertReady();
+  return shape(_detectExact(toU32(tokens), toKeyBytes(key), contextWidth));
+}
+
+export { SCHEMES };
@@ -0,0 +1 @@
+{ "type": "module" }
@@ -0,0 +1,93 @@
+/* tslint:disable */
+/* eslint-disable */
+
+/**
+ * Detection result, JS-facing (fields via getters).
+ */
+export class WasmDetection {
+    private constructor();
+    free(): void;
+    [Symbol.dispose](): void;
+    readonly log10_p: number;
+    readonly p_value: number;
+    readonly scored_positions: number;
+    readonly z_score: number;
+}
+
+/**
+ * Streaming watermarked sampler, JS-facing.
+ */
+export class WasmWatermarker {
+    free(): void;
+    [Symbol.dispose](): void;
+    /**
+     * `key_material`: arbitrary secret bytes (e.g. a hex string's bytes).
+     * `scheme`: `"tournament"` | `"tournament_nd"` | `"gumbel"` (default gumbel).
+     */
+    constructor(key_material: Uint8Array, context_width: number, layers: number, scheme: string);
+    /**
+     * Emit one token: returns the index into `tokens`/`probs` of the chosen
+     * candidate. Advances the rolling context.
+     */
+    step(tokens: Uint32Array, probs: Float32Array): number;
+}
+
+/**
+ * Detect a watermark over an emitted token id sequence, using the named scheme.
+ */
+export function detect(tokens: Uint32Array, key_material: Uint8Array, context_width: number, layers: number, scheme: string): WasmDetection;
+
+/**
+ * Exact-null short-text detection (Gumbel, exact Gamma tail): correct p-values
+ * at small token counts where the normal approximation misleads. See `bayes.rs`.
+ */
+export function detect_exact(tokens: Uint32Array, key_material: Uint8Array, context_width: number): WasmDetection;
+
+/**
+ * Indel-robust detection (Gumbel self-sync): far stronger than the standard
+ * detector on edited / repetitive text. See `align.rs`.
+ */
+export function detect_selfsync(tokens: Uint32Array, key_material: Uint8Array, context_width: number): WasmDetection;
+
+export type InitInput = RequestInfo | URL | Response | BufferSource | WebAssembly.Module;
+
+export interface InitOutput {
+    readonly memory: WebAssembly.Memory;
+    readonly __wbg_wasmdetection_free: (a: number, b: number) => void;
+    readonly __wbg_wasmwatermarker_free: (a: number, b: number) => void;
+    readonly detect: (a: number, b: number, c: number, d: number, e: number, f: number, g: number, h: number) => number;
+    readonly detect_exact: (a: number, b: number, c: number, d: number, e: number) => number;
+    readonly detect_selfsync: (a: number, b: number, c: number, d: number, e: number) => number;
+    readonly wasmdetection_log10_p: (a: number) => number;
+    readonly wasmdetection_p_value: (a: number) => number;
+    readonly wasmdetection_scored_positions: (a: number) => number;
+    readonly wasmdetection_z_score: (a: number) => number;
+    readonly wasmwatermarker_new: (a: number, b: number, c: number, d: number, e: number, f: number) => number;
+    readonly wasmwatermarker_step: (a: number, b: number, c: number, d: number, e: number) => number;
+    readonly __wbindgen_externrefs: WebAssembly.Table;
+    readonly __wbindgen_malloc: (a: number, b: number) => number;
+    readonly __wbindgen_realloc: (a: number, b: number, c: number, d: number) => number;
+    readonly __wbindgen_start: () => void;
+}
+
+export type SyncInitInput = BufferSource | WebAssembly.Module;
+
+/**
+ * Instantiates the given `module`, which can either be bytes or
+ * a precompiled `WebAssembly.Module`.
+ *
+ * @param {{ module: SyncInitInput }} module - Passing `SyncInitInput` directly is deprecated.
+ *
+ * @returns {InitOutput}
+ */
+export function initSync(module: { module: SyncInitInput } | SyncInitInput): InitOutput;
+
+/**
+ * If `module_or_path` is {RequestInfo} or {URL}, makes a request and
+ * for everything else, calls `WebAssembly.instantiate` directly.
+ *
+ * @param {{ module_or_path: InitInput | Promise<InitInput> }} module_or_path - Passing `InitInput` directly is deprecated.
+ *
+ * @returns {Promise<InitOutput>}
+ */
+export default function __wbg_init (module_or_path?: { module_or_path: InitInput | Promise<InitInput> } | InitInput | Promise<InitInput>): Promise<InitOutput>;
@@ -0,0 +1,398 @@
+/* @ts-self-types="./ruflo_watermark.d.ts" */
+
+/**
+ * Detection result, JS-facing (fields via getters).
+ */
+export class WasmDetection {
+    static __wrap(ptr) {
+        const obj = Object.create(WasmDetection.prototype);
+        obj.__wbg_ptr = ptr;
+        WasmDetectionFinalization.register(obj, obj.__wbg_ptr, obj);
+        return obj;
+    }
+    __destroy_into_raw() {
+        const ptr = this.__wbg_ptr;
+        this.__wbg_ptr = 0;
+        WasmDetectionFinalization.unregister(this);
+        return ptr;
+    }
+    free() {
+        const ptr = this.__destroy_into_raw();
+        wasm.__wbg_wasmdetection_free(ptr, 0);
+    }
+    /**
+     * @returns {number}
+     */
+    get log10_p() {
+        const ret = wasm.wasmdetection_log10_p(this.__wbg_ptr);
+        return ret;
+    }
+    /**
+     * @returns {number}
+     */
+    get p_value() {
+        const ret = wasm.wasmdetection_p_value(this.__wbg_ptr);
+        return ret;
+    }
+    /**
+     * @returns {number}
+     */
+    get scored_positions() {
+        const ret = wasm.wasmdetection_scored_positions(this.__wbg_ptr);
+        return ret >>> 0;
+    }
+    /**
+     * @returns {number}
+     */
+    get z_score() {
+        const ret = wasm.wasmdetection_z_score(this.__wbg_ptr);
+        return ret;
+    }
+}
+if (Symbol.dispose) WasmDetection.prototype[Symbol.dispose] = WasmDetection.prototype.free;
+
+/**
+ * Streaming watermarked sampler, JS-facing.
+ */
+export class WasmWatermarker {
+    __destroy_into_raw() {
+        const ptr = this.__wbg_ptr;
+        this.__wbg_ptr = 0;
+        WasmWatermarkerFinalization.unregister(this);
+        return ptr;
+    }
+    free() {
+        const ptr = this.__destroy_into_raw();
+        wasm.__wbg_wasmwatermarker_free(ptr, 0);
+    }
+    /**
+     * `key_material`: arbitrary secret bytes (e.g. a hex string's bytes).
+     * `scheme`: `"tournament"` | `"tournament_nd"` | `"gumbel"` (default gumbel).
+     * @param {Uint8Array} key_material
+     * @param {number} context_width
+     * @param {number} layers
+     * @param {string} scheme
+     */
+    constructor(key_material, context_width, layers, scheme) {
+        const ptr0 = passArray8ToWasm0(key_material, wasm.__wbindgen_malloc);
+        const len0 = WASM_VECTOR_LEN;
+        const ptr1 = passStringToWasm0(scheme, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
+        const len1 = WASM_VECTOR_LEN;
+        const ret = wasm.wasmwatermarker_new(ptr0, len0, context_width, layers, ptr1, len1);
+        this.__wbg_ptr = ret;
+        WasmWatermarkerFinalization.register(this, this.__wbg_ptr, this);
+        return this;
+    }
+    /**
+     * Emit one token: returns the index into `tokens`/`probs` of the chosen
+     * candidate. Advances the rolling context.
+     * @param {Uint32Array} tokens
+     * @param {Float32Array} probs
+     * @returns {number}
+     */
+    step(tokens, probs) {
+        const ptr0 = passArray32ToWasm0(tokens, wasm.__wbindgen_malloc);
+        const len0 = WASM_VECTOR_LEN;
+        const ptr1 = passArrayF32ToWasm0(probs, wasm.__wbindgen_malloc);
+        const len1 = WASM_VECTOR_LEN;
+        const ret = wasm.wasmwatermarker_step(this.__wbg_ptr, ptr0, len0, ptr1, len1);
+        return ret >>> 0;
+    }
+}
+if (Symbol.dispose) WasmWatermarker.prototype[Symbol.dispose] = WasmWatermarker.prototype.free;
+
+/**
+ * Detect a watermark over an emitted token id sequence, using the named scheme.
+ * @param {Uint32Array} tokens
+ * @param {Uint8Array} key_material
+ * @param {number} context_width
+ * @param {number} layers
+ * @param {string} scheme
+ * @returns {WasmDetection}
+ */
+export function detect(tokens, key_material, context_width, layers, scheme) {
+    const ptr0 = passArray32ToWasm0(tokens, wasm.__wbindgen_malloc);
+    const len0 = WASM_VECTOR_LEN;
+    const ptr1 = passArray8ToWasm0(key_material, wasm.__wbindgen_malloc);
+    const len1 = WASM_VECTOR_LEN;
+    const ptr2 = passStringToWasm0(scheme, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
+    const len2 = WASM_VECTOR_LEN;
+    const ret = wasm.detect(ptr0, len0, ptr1, len1, context_width, layers, ptr2, len2);
+    return WasmDetection.__wrap(ret);
+}
+
+/**
+ * Exact-null short-text detection (Gumbel, exact Gamma tail): correct p-values
+ * at small token counts where the normal approximation misleads. See `bayes.rs`.
+ * @param {Uint32Array} tokens
+ * @param {Uint8Array} key_material
+ * @param {number} context_width
+ * @returns {WasmDetection}
+ */
+export function detect_exact(tokens, key_material, context_width) {
+    const ptr0 = passArray32ToWasm0(tokens, wasm.__wbindgen_malloc);
+    const len0 = WASM_VECTOR_LEN;
+    const ptr1 = passArray8ToWasm0(key_material, wasm.__wbindgen_malloc);
+    const len1 = WASM_VECTOR_LEN;
+    const ret = wasm.detect_exact(ptr0, len0, ptr1, len1, context_width);
+    return WasmDetection.__wrap(ret);
+}
+
+/**
+ * Indel-robust detection (Gumbel self-sync): far stronger than the standard
+ * detector on edited / repetitive text. See `align.rs`.
+ * @param {Uint32Array} tokens
+ * @param {Uint8Array} key_material
+ * @param {number} context_width
+ * @returns {WasmDetection}
+ */
+export function detect_selfsync(tokens, key_material, context_width) {
+    const ptr0 = passArray32ToWasm0(tokens, wasm.__wbindgen_malloc);
+    const len0 = WASM_VECTOR_LEN;
+    const ptr1 = passArray8ToWasm0(key_material, wasm.__wbindgen_malloc);
+    const len1 = WASM_VECTOR_LEN;
+    const ret = wasm.detect_selfsync(ptr0, len0, ptr1, len1, context_width);
+    return WasmDetection.__wrap(ret);
+}
+function __wbg_get_imports() {
+    const import0 = {
+        __proto__: null,
+        __wbg___wbindgen_throw_bb96b2010945f0bc: function(arg0, arg1) {
+            throw new Error(getStringFromWasm0(arg0, arg1));
+        },
+        __wbindgen_init_externref_table: function() {
+            const table = wasm.__wbindgen_externrefs;
+            const offset = table.grow(4);
+            table.set(0, undefined);
+            table.set(offset + 0, undefined);
+            table.set(offset + 1, null);
+            table.set(offset + 2, true);
+            table.set(offset + 3, false);
+        },
+    };
+    return {
+        __proto__: null,
+        "./ruflo_watermark_bg.js": import0,
+    };
+}
+
+const WasmDetectionFinalization = (typeof FinalizationRegistry === 'undefined')
+    ? { register: () => {}, unregister: () => {} }
+    : new FinalizationRegistry(ptr => wasm.__wbg_wasmdetection_free(ptr, 1));
+const WasmWatermarkerFinalization = (typeof FinalizationRegistry === 'undefined')
+    ? { register: () => {}, unregister: () => {} }
+    : new FinalizationRegistry(ptr => wasm.__wbg_wasmwatermarker_free(ptr, 1));
+
+let cachedFloat32ArrayMemory0 = null;
+function getFloat32ArrayMemory0() {
+    if (cachedFloat32ArrayMemory0 === null || cachedFloat32ArrayMemory0.byteLength === 0) {
+        cachedFloat32ArrayMemory0 = new Float32Array(wasm.memory.buffer);
+    }
+    return cachedFloat32ArrayMemory0;
+}
+
+function getStringFromWasm0(ptr, len) {
+    return decodeText(ptr >>> 0, len);
+}
+
+let cachedUint32ArrayMemory0 = null;
+function getUint32ArrayMemory0() {
+    if (cachedUint32ArrayMemory0 === null || cachedUint32ArrayMemory0.byteLength === 0) {
+        cachedUint32ArrayMemory0 = new Uint32Array(wasm.memory.buffer);
+    }
+    return cachedUint32ArrayMemory0;
+}
+
+let cachedUint8ArrayMemory0 = null;
+function getUint8ArrayMemory0() {
+    if (cachedUint8ArrayMemory0 === null || cachedUint8ArrayMemory0.byteLength === 0) {
+        cachedUint8ArrayMemory0 = new Uint8Array(wasm.memory.buffer);
+    }
+    return cachedUint8ArrayMemory0;
+}
+
+function passArray32ToWasm0(arg, malloc) {
+    const ptr = malloc(arg.length * 4, 4) >>> 0;
+    getUint32ArrayMemory0().set(arg, ptr / 4);
+    WASM_VECTOR_LEN = arg.length;
+    return ptr;
+}
+
+function passArray8ToWasm0(arg, malloc) {
+    const ptr = malloc(arg.length * 1, 1) >>> 0;
+    getUint8ArrayMemory0().set(arg, ptr / 1);
+    WASM_VECTOR_LEN = arg.length;
+    return ptr;
+}
+
+function passArrayF32ToWasm0(arg, malloc) {
+    const ptr = malloc(arg.length * 4, 4) >>> 0;
+    getFloat32ArrayMemory0().set(arg, ptr / 4);
+    WASM_VECTOR_LEN = arg.length;
+    return ptr;
+}
+
+function passStringToWasm0(arg, malloc, realloc) {
+    if (realloc === undefined) {
+        const buf = cachedTextEncoder.encode(arg);
+        const ptr = malloc(buf.length, 1) >>> 0;
+        getUint8ArrayMemory0().subarray(ptr, ptr + buf.length).set(buf);
+        WASM_VECTOR_LEN = buf.length;
+        return ptr;
+    }
+
+    let len = arg.length;
+    let ptr = malloc(len, 1) >>> 0;
+
+    const mem = getUint8ArrayMemory0();
+
+    let offset = 0;
+
+    for (; offset < len; offset++) {
+        const code = arg.charCodeAt(offset);
+        if (code > 0x7F) break;
+        mem[ptr + offset] = code;
+    }
+    if (offset !== len) {
+        if (offset !== 0) {
+            arg = arg.slice(offset);
+        }
+        ptr = realloc(ptr, len, len = offset + arg.length * 3, 1) >>> 0;
+        const view = getUint8ArrayMemory0().subarray(ptr + offset, ptr + len);
+        const ret = cachedTextEncoder.encodeInto(arg, view);
+
+        offset += ret.written;
+        ptr = realloc(ptr, len, offset, 1) >>> 0;
+    }
+
+    WASM_VECTOR_LEN = offset;
+    return ptr;
+}
+
+let cachedTextDecoder = new TextDecoder('utf-8', { ignoreBOM: true, fatal: true });
+cachedTextDecoder.decode();
+const MAX_SAFARI_DECODE_BYTES = 2146435072;
+let numBytesDecoded = 0;
+function decodeText(ptr, len) {
+    numBytesDecoded += len;
+    if (numBytesDecoded >= MAX_SAFARI_DECODE_BYTES) {
+        cachedTextDecoder = new TextDecoder('utf-8', { ignoreBOM: true, fatal: true });
+        cachedTextDecoder.decode();
+        numBytesDecoded = len;
+    }
+    return cachedTextDecoder.decode(getUint8ArrayMemory0().subarray(ptr, ptr + len));
+}
+
+const cachedTextEncoder = new TextEncoder();
+
+if (!('encodeInto' in cachedTextEncoder)) {
+    cachedTextEncoder.encodeInto = function (arg, view) {
+        const buf = cachedTextEncoder.encode(arg);
+        view.set(buf);
+        return {
+            read: arg.length,
+            written: buf.length
+        };
+    };
+}
+
+let WASM_VECTOR_LEN = 0;
+
+let wasmModule, wasmInstance, wasm;
+function __wbg_finalize_init(instance, module) {
+    wasmInstance = instance;
+    wasm = instance.exports;
+    wasmModule = module;
+    cachedFloat32ArrayMemory0 = null;
+    cachedUint32ArrayMemory0 = null;
+    cachedUint8ArrayMemory0 = null;
+    wasm.__wbindgen_start();
+    return wasm;
+}
+
+async function __wbg_load(module, imports) {
+    if (typeof Response === 'function' && module instanceof Response) {
+        if (!module.ok) {
+            throw new Error(`failed to fetch Wasm: ${module.status} ${module.statusText} fetching '${module.url}'`);
+        }
+
+        if (typeof WebAssembly.instantiateStreaming === 'function') {
+            try {
+                return await WebAssembly.instantiateStreaming(module, imports);
+            } catch (e) {
+                const validResponse = expectedResponseType(module.type);
+
+                if (validResponse && module.headers.get('Content-Type') !== 'application/wasm') {
+                    console.warn("`WebAssembly.instantiateStreaming` failed because your server does not serve Wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error:\n", e);
+
+                } else { throw e; }
+            }
+        }
+
+        const bytes = await module.arrayBuffer();
+        return await WebAssembly.instantiate(bytes, imports);
+    } else {
+        const instance = await WebAssembly.instantiate(module, imports);
+
+        if (instance instanceof WebAssembly.Instance) {
+            return { instance, module };
+        } else {
+            return instance;
+        }
+    }
+
+    function expectedResponseType(type) {
+        switch (type) {
+            case 'basic': case 'cors': case 'default': return true;
+        }
+        return false;
+    }
+}
+
+function initSync(module) {
+    if (wasm !== undefined) return wasm;
+
+
+    if (module !== undefined) {
+        if (Object.getPrototypeOf(module) === Object.prototype) {
+            ({module} = module)
+        } else {
+            console.warn('using deprecated parameters for `initSync()`; pass a single object instead')
+        }
+    }
+
+    const imports = __wbg_get_imports();
+    if (!(module instanceof WebAssembly.Module)) {
+        module = new WebAssembly.Module(module);
+    }
+    const instance = new WebAssembly.Instance(module, imports);
+    return __wbg_finalize_init(instance, module);
+}
+
+async function __wbg_init(module_or_path) {
+    if (wasm !== undefined) return wasm;
+
+
+    if (module_or_path !== undefined) {
+        if (Object.getPrototypeOf(module_or_path) === Object.prototype) {
+            ({module_or_path} = module_or_path)
+        } else {
+            console.warn('using deprecated parameters for the initialization function; pass a single object instead')
+        }
+    }
+
+    if (module_or_path === undefined) {
+        module_or_path = new URL('ruflo_watermark_bg.wasm', import.meta.url);
+    }
+    const imports = __wbg_get_imports();
+
+    if (typeof module_or_path === 'string' || (typeof Request === 'function' && module_or_path instanceof Request) || (typeof URL === 'function' && module_or_path instanceof URL)) {
+        module_or_path = fetch(module_or_path);
+    }
+
+    const { instance, module } = await __wbg_load(await module_or_path, imports);
+
+    return __wbg_finalize_init(instance, module);
+}
+
+export { initSync, __wbg_init as default };
@@ -0,0 +1,18 @@
+/* tslint:disable */
+/* eslint-disable */
+export const memory: WebAssembly.Memory;
+export const __wbg_wasmdetection_free: (a: number, b: number) => void;
+export const __wbg_wasmwatermarker_free: (a: number, b: number) => void;
+export const detect: (a: number, b: number, c: number, d: number, e: number, f: number, g: number, h: number) => number;
+export const detect_exact: (a: number, b: number, c: number, d: number, e: number) => number;
+export const detect_selfsync: (a: number, b: number, c: number, d: number, e: number) => number;
+export const wasmdetection_log10_p: (a: number) => number;
+export const wasmdetection_p_value: (a: number) => number;
+export const wasmdetection_scored_positions: (a: number) => number;
+export const wasmdetection_z_score: (a: number) => number;
+export const wasmwatermarker_new: (a: number, b: number, c: number, d: number, e: number, f: number) => number;
+export const wasmwatermarker_step: (a: number, b: number, c: number, d: number, e: number) => number;
+export const __wbindgen_externrefs: WebAssembly.Table;
+export const __wbindgen_malloc: (a: number, b: number) => number;
+export const __wbindgen_realloc: (a: number, b: number, c: number, d: number) => number;
+export const __wbindgen_start: () => void;
@@ -12,3 +12,4 @@
 .ruvector/
 /pkg
 /pkg-nodejs
+/pkg-web