The output of wasm-bindgen includes a JS file, and as a result it's good to know what browsers that file is expected to be used in! By default the output uses ES modules with Wasm imports which isn't implemented in browsers today, but when using a bundler (like Webpack) or --target web you should be able to produce output suitable for all browsers.

Firefox, Chrome, Safari, and Edge browsers are all supported by wasm-bindgen. If you find a problem in one of these browsers please report it as we'd like to fix the bug! If you find a bug in another browser we would also like to be aware of it!

• IE 11 - wasm-bindgen by default requires support for WebAssembly, but no version of IE currently supports WebAssembly. You can support IE by compiling wasm files to JS using wasm2js (you can see an example of doing this too). Note that at this time no bundler will do this by default, but we'd love to document plugins which do this if you are aware of one!

If you find other incompatibilities please report them to us! We'd love to either keep this list up-to-date or fix the underlying bugs :)