mirror of
https://github.com/fluencelabs/wasm-bindgen
synced 2025-03-30 08:51:05 +00:00
a2aa28e4d3
This commit adds a new attribute to `#[wasm_bindgen]`: `start`. The `start` attribute can be used to indicate that a function should be executed when the module is loaded, configuring the `start` function of the wasm executable. While this doesn't necessarily literally configure the `start` section, it does its best! Only one crate in a crate graph may indicate `#[wasm_bindgen(start)]`, so it's not recommended to be used in libraries but only end-user applications. Currently this still must be used with the `crate-type = ["cdylib"]` annotation in `Cargo.toml`. The implementation here is somewhat tricky because of the circular dependency between our generated JS and the wasm file that we emit. This circular dependency makes running initialization routines (like the `start` shim) particularly fraught with complications because one may need to run before the other but bundlers may not necessarily respect it. Workarounds have been implemented for various emission strategies, for example calling the start function directly after exports are wired up with `--no-modules` and otherwise working around what appears to be a Webpack bug with initializers running in a different order than we'd like. In any case, this in theory doesn't show up to the end user! Closes #74
47 lines
853 B
Rust
47 lines
853 B
Rust
#![cfg(target_arch = "wasm32")]
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extern crate js_sys;
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extern crate wasm_bindgen;
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extern crate wasm_bindgen_test;
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extern crate wasm_bindgen_test_crate_a;
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extern crate wasm_bindgen_test_crate_b;
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#[cfg(feature = "serde-serialize")]
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#[macro_use]
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extern crate serde_derive;
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use wasm_bindgen::prelude::*;
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pub mod api;
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pub mod char;
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pub mod classes;
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pub mod closures;
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pub mod comments;
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pub mod duplicate_deps;
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pub mod duplicates;
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pub mod enums;
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#[path = "final.rs"]
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pub mod final_;
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pub mod import_class;
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pub mod imports;
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pub mod js_objects;
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pub mod jscast;
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pub mod math;
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pub mod node;
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pub mod option;
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pub mod optional_primitives;
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pub mod rethrow;
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pub mod simple;
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pub mod slice;
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pub mod structural;
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pub mod u64;
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pub mod validate_prt;
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pub mod variadic;
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pub mod vendor_prefix;
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// should not be executed
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#[wasm_bindgen(start)]
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pub fn start() {
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panic!();
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}
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