use a fresh WebAssembly instance for each SourceMapConsumer #477
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This works around WebAssembly memory limits.
I tried to benchmark this using the code in
bench/, but it seems like that code is stale? I couldn't get it to run using the instructions :(Wrapping
WebAssembly.instantiateinconsole.timeshowed it takes around 0.1ms on my machine on average, though, which is promising.This approach would also mean you could drop
SourceMapConsumer.destroy, as the WASM memory would be automatically GC'd.Fixes #476.