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b762948456
This commit is an implementation of [RFC 6] which enables crates to inline local JS snippets into the final output artifact of `wasm-bindgen`. This is accompanied with a few minor breaking changes which are intended to be relatively minor in practice: * The `module` attribute disallows paths starting with `./` and `../`. It requires paths starting with `/` to actually exist on the filesystem. * The `--browser` flag no longer emits bundler-compatible code, but rather emits an ES module that can be natively loaded into a browser. Otherwise be sure to check out [the RFC][RFC 6] for more details, and otherwise this should implement at least the MVP version of the RFC! Notably at this time JS snippets with `--nodejs` or `--no-modules` are not supported and will unconditionally generate an error. [RFC 6]: https://github.com/rustwasm/rfcs/pull/6 Closes #1311
wasm-bindgen-macro
Implementation of the #[wasm_bindgen] attribute. See the wasm-bindgen
documentation for more information about what this macro does.
Testing
Testing of this macro is done through "ui tests" in the ui-tests subdirectory
of this crate. Each Rust file in this folder is compiled with the wasm_bindgen
crate, and the *.stderr file sitting next to it is the asserted output of the
compiler. If the output matches, the test passes, and if the output doesn't
match the test fails. Note that it is also considered a failure if a test
actually compiles successfully.
To add a test:
- Create
ui-tests/my-awesome-test.rs - Write an invalid
#[wasm_bindgen]invocation, testing the error you're generating - Execute
cargo test -p ui-tests, the test will fail - From within the
ui-testsfolder, execute./update-all-references.sh. This should create amy-awesome-test.stderrfile. - Inspect
my-awesome-test.stderrto make sure it looks ok - Rerun
cargo test -p ui-testsand your tests should pass!
Testing here is a work in progress, see #601 for more information.