e8bf9e20c7
The package could not be bundled. Every webpack consumer failed with:
Module not found: Error: Can't resolve 'quantus_crypto_bg.wasm'
in node_modules/@quantus/crypto/generated
wasm-bindgen's async `__wbg_init` contains
module_or_path = new URL('quantus_crypto_bg.wasm', import.meta.url);
and webpack resolves `new URL(..., import.meta.url)` statically, at build time,
whether or not the branch can run. The file is not in the package — the wasm
ships base64'd in bytes.js, which is the entire point of this package — so the
build failed on a code path we never call.
node never sees it, which is why ten Rust tests, twelve consumer assertions and a
browser probe all passed while the package was unusable in a bundler. It took a
real extension build to surface, and that is the useful lesson: this package's
consumers bundle, and nothing in its own test suite does.
So the dead init is removed after bindgen runs. Shipping a second copy of the
wasm to satisfy a path we do not use would be the wide fix; deleting generated
code we never call is the narrow one.
The stripper asserts the shape it expects and throws if wasm-bindgen changes it,
rather than silently no-opping — a build that quietly stopped stripping would
ship the broken package again. It also re-checks that no reference to the .wasm
filename survives.
Published as 0.1.1.
Refs quantus/wasm#1, quantus/extension#2
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012uDUodEcRbBwNRi3UCmw8f
60 lines
2.6 KiB
Bash
Executable File
60 lines
2.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2026 @quantus/crypto authors & contributors
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# SPDX-License-Identifier: Apache-2.0
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# Builds packages/quantus-crypto. Deliberately NOT part of build-wasm.sh: that
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# script drives the nightly-2022-06-24 + xargo build that `wasm-crypto` needs,
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# and this crate needs a modern compiler (inline `const {}` blocks, Rust >= 1.79).
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# Keeping the two builds separate is what lets wasm-crypto stay byte-identical to
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# upstream. See quantus/wasm#1.
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#
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# There is no asm.js step here. wasm2js over ML-DSA would be enormous and slow,
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# and every context we ship into sets 'wasm-unsafe-eval', so wasm is always
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# available where this runs.
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set -e
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PKG=quantus-crypto
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CRATE=quantus_crypto
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BINDGEN_VER=0.2.128
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WASM=packages/$PKG/build-wasm/${CRATE}_bg.wasm
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OPT=packages/$PKG/build-wasm/${CRATE}_opt.wasm
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echo "*** Building Rust sources"
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# The toolchain comes from packages/quantus-crypto/rust-toolchain.toml, which
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# pins the same channel the chain builds its runtime with.
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(cd packages/$PKG && cargo build --target wasm32-unknown-unknown --release --locked)
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echo "*** Converting to WASM"
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./bindgen-quantus/wasm-bindgen \
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packages/$PKG/target/wasm32-unknown-unknown/release/$CRATE.wasm \
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--out-dir packages/$PKG/build-wasm \
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--target web
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# The glue is a build artifact but is checked in, so the package can be built
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# without a Rust toolchain — the same reasoning as upstream checking in an empty
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# bytes.js. Copy it back so the two never drift.
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# Must run before the glue is copied into src/generated — see the script's own
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# comment for why the fetch path cannot ship.
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node ./scripts/strip-wasm-fetch-init.mjs packages/$PKG/build-wasm/$CRATE.js
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echo "*** Updating checked-in bindings"
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cp packages/$PKG/build-wasm/$CRATE.js packages/$PKG/src/generated/$CRATE.js
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cp packages/$PKG/build-wasm/$CRATE.d.ts packages/$PKG/src/generated/$CRATE.d.ts
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# binaryen-quantus, not binaryen. Upstream pins version_105 (2021), which predates
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# the externref tables wasm-bindgen 0.2.128 emits: it "optimises" the table into
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# something that fails at instantiation with
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# `WebAssembly.Table.grow(): failed to grow table by 4`. The wasm is valid before
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# wasm-opt and broken after, and nothing in the build says so — it only surfaces
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# when a consumer tries to init. Same shape of problem as the two bindgens.
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echo "*** Optimising WASM output"
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./binaryen-quantus/bin/wasm-opt $WASM -Oz -o $OPT
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# Must come before packing: tsc clears build/, which is where bytes.js lands.
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./scripts/build-quantus-js.sh
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echo "*** Packing WASM into baseX"
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PKG_NAME=$PKG CRATE_NAME=$CRATE node ./scripts/pack-quantus-base.mjs
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