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feat(wasm): examples/wasm-viewer, an HDF5/NetCDF-4 viewer page

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Drop a file (or pass ?file=<url>&path=<object>), browse the tree lazily,
see a dataset's type, shape, max shape and attributes, and page through
its values as 50x12 hyperslab windows (leading dims of 3-D+ data held
at chosen indices). build.sh produces pkg/ (not committed) with
wasm-bindgen --target web and checks the CLI matches the crate version.

test/run.sh builds it and runs test.mjs under Node against the h5py/
netCDF4 fixture (250 checks: every dataset whole and as a strided
hyperslab, listings, attributes, error paths, the page's DOM-free
helpers), then browser.sh renders the page in headless Chromium for
eight objects and checks the DOM. The fixture gains LZ4 (read) and Zstd
(refused: links C) datasets and a compound attribute (value null plus
its type). ci-test.sh runs it when node and wasm-bindgen exist; the CI
container has neither, so CI relies on the native h5py_interop test.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
This commit is contained in:
osobh
2026-09-26 00:05:34 -05:00
co-authored by Claude Opus 5.5
parent a42b646689
commit 1abd93e0f8
11 changed files with 800 additions and 1 deletions
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scripts/ci-test.sh
+13
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@@ -121,6 +121,19 @@ run_step "wasm32 clippy (clawhdf5-wasm)" cargo clippy \
--all-targets \
-- -D warnings
# The built wasm package, run under Node against h5py/netCDF4-written files,
# and the viewer page in headless Chromium when one is found.
# Needs node and the wasm-bindgen CLI, which the CI container does not have;
# the same expectations are checked natively by clawhdf5-wasm's h5py_interop
# test in the cargo test step.
if command -v node >/dev/null && command -v wasm-bindgen >/dev/null; then
run_step "wasm package under Node (+ browser)" bash "$SCRIPT_DIR/../examples/wasm-viewer/test/run.sh"
else
echo ""
echo "==> [wasm package under Node] SKIPPED: needs node and wasm-bindgen"
STEPS+=("SKIP: wasm package under Node")
fi
# The workspace declares a minimum Rust version (rust-version in Cargo.toml);
# check that it really builds there, so the README badge and the manifests
# cannot drift from the truth. Separate target dir: a different toolchain