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36 lines
1.2 KiB
Bash
Executable File
36 lines
1.2 KiB
Bash
Executable File
#!/bin/bash
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#
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# Build the JavaScript modules
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#
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# This script is really a workaround for https://github.com/rustwasm/wasm-pack/issues/1074.
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#
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# Currently, the only reliable way to load WebAssembly in all the JS
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# environments we want to target (web-via-webpack, web-via-browserify, jest)
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# seems to be to pack the WASM into base64, and then unpack it and instantiate
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# it at runtime.
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#
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# Hopefully one day, https://github.com/rustwasm/wasm-pack/issues/1074 will be
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# fixed and this will be unnecessary.
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set -e
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cd "$(dirname "$0")"/..
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WASM_BINDGEN_WEAKREF=1 wasm-pack build --target nodejs --scope rust-cashu --out-dir pkg "${WASM_PACK_ARGS[@]}"
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# Convert the Wasm into a JS file that exports the base64'ed Wasm.
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echo "module.exports = \`$(base64 pkg/cashu_js_bg.wasm)\`;" > pkg/cashu_js_bg.wasm.js
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# In the JavaScript:
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# 1. Strip out the lines that load the WASM, and our new epilogue.
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# 2. Remove the imports of `TextDecoder` and `TextEncoder`. We rely on the global defaults.
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{
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sed -e '/Text..coder.*= require(.util.)/d' \
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-e '/^const path = /,$d' pkg/cashu_js.js
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cat scripts/epilogue.js
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} > pkg/cashu_js.js.new
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mv pkg/cashu_js.js.new pkg/cashu_js.js
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# also extend the typescript
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cat scripts/epilogue.d.ts >> pkg/cashu_js.d.ts
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