feat(wasm): add browser bindings (#180)

* feat(wasm): add browser bindings

* fix(wasm): address review feedback

* fix(wasm): preserve numeric plain text

* chore(wasm): prepare 0.1.2 release

wasm/README.md

@@ -0,0 +1,60 @@
+# @firecrawl/pdf-inspector-wasm
+
+Browser WebAssembly bindings for [pdf-inspector](https://github.com/firecrawl/pdf-inspector). Classify PDFs and extract structured Markdown locally from a `Uint8Array`, using the same Rust core as the native Node.js, Python, and Rust packages.
+
+## Install
+
+```bash
+npm install @firecrawl/pdf-inspector-wasm
+```
+
+## Usage
+
+```ts
+import init, { processPdf } from "@firecrawl/pdf-inspector-wasm";
+
+await init();
+
+const response = await fetch("/annual-report.pdf");
+const pdf = new Uint8Array(await response.arrayBuffer());
+const result = processPdf(pdf);
+
+console.log(result.pdfType);
+console.log(result.markdown);
+```
+
+Pass options when you need selected pages or compact Markdown:
+
+```ts
+const result = processPdf(pdf, {
+  pages: [1, 3, 5],
+  profile: "compact",
+  includePageMarkers: true,
+});
+```
+
+The package also exports:
+
+- `detectPdf(pdf, options?)` for detection without extraction.
+- `classifyPdf(pdf)` for the lightweight result shape shared with the native Node.js API.
+- `extractText(pdf)` for plain text.
+- `version()` for the WASM package version.
+
+## Browser behavior
+
+- Parsing runs locally. PDF bytes are not uploaded anywhere.
+- The build is single-threaded and does not require cross-origin isolation.
+- CMaps are embedded so CJK font decoding does not depend on a filesystem.
+- Extraction is synchronous after `init()`. For large documents, call it from a Web Worker to keep the UI responsive.
+- Image-only documents still require a separate OCR step.
+
+## Build from source
+
+```bash
+cargo install wasm-pack --version 0.15.0 --locked
+wasm-pack build wasm --target web --scope firecrawl --release
+```
+
+## License
+
+MIT