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Don't give up when servers don't set the application/wasm MIME type

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It is quite annoying when using `python -m SimpleHTTPServer` or equivalent.
This commit is contained in:
Nick Fitzgerald 2019-02-10 13:58:13 -05:00
parent c8ad85dd0b
commit 4975ca2954
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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@ -612,7 +612,17 @@ impl<'a> Context<'a> {
memory = __exports.memory = {init_memory};
const response = fetch(module_or_path);
if (typeof WebAssembly.instantiateStreaming === 'function') {{
result = WebAssembly.instantiateStreaming(response, imports);
result = WebAssembly.instantiateStreaming(response, 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 response
.then(r => r.arrayBuffer())
.then(bytes => WebAssembly.instantiate(bytes, imports));
}});
}} else {{
result = response
.then(r => r.arrayBuffer())