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Add an example of wasm2asm and wasm-bindgen

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This commit adds an example of executing the `wasm2asm` tool to generate asm.js
output instead of WebAssembly. This is often useful when supporting older
browsers, such as IE 11, that doesn't have native support for WebAssembly.
This commit is contained in:
Alex Crichton
2018-04-30 13:22:46 -07:00
parent 6f95e5c531
commit dadcff15ef
14 changed files with 327 additions and 8 deletions
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# WebAssembly to asm.js
This directory is an example of using [binaryen]'s `wasm2asm` tool to convert
the wasm output of `wasm-bindgen` to a normal JS file that can be executed like
asm.js.
You can build the example locally with:
```
$ ./build.sh
```
When opened in a web browser this should print "Hello, World!" to the console.
This example uses the `wasm2es6js` tool to convert the wasm file to an ES module
that's implemented with asm.js instead of WebAssembly. The conversion to asm.js
is done by [binaryen]'s `wasm2asm` tool internally.
Note that the `wasm2asm` tool is still pretty early days so there's likely to be
a number of bugs to run into or work around. If any are encountered though
please feel free to report them upstream!
[binaryen]: https://github.com/WebAssembly/binaryen