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Merge pull request #1243 from fitzgen/instantiateStreaming-fallback-round-2

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Apply the `instantiateStreaming` incorrect MIME type recovery for no-modules
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Alex Crichton 2019-02-12 12:45:46 -06:00 committed by GitHub
commit db4c3bf77b
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1 changed files with 11 additions and 1 deletions
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12
crates/cli-support/src/js/mod.rs
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@ -662,7 +662,17 @@ impl<'a> Context<'a> {
}} else {{
const data = fetch(path_or_module);
if (typeof WebAssembly.instantiateStreaming === 'function') {{
instantiation = WebAssembly.instantiateStreaming(data, imports);
instantiation = WebAssembly.instantiateStreaming(data, imports)
.catch(e => {{
console.warn(\"`WebAssembly.instantiateStreaming` failed. Assuming this is \
because your server does not serve wasm with \
`application/wasm` MIME type. Falling back to \
`WebAssembly.instantiate` which is slower. Original \
error:\\n\", e);
return data
.then(r => r.arrayBuffer())
.then(bytes => WebAssembly.instantiate(bytes, imports));
}});
}} else {{
instantiation = data
.then(response => response.arrayBuffer())