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Fix PackageToJS plugin wasm-opt fallback when output file exists#401
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6dca4f7 to40c79f7CompareWhen wasm-opt is not installed, DefaultPackagingSystem falls back to copyingthe input Wasm file directly to output. However, FileManager.copyItemfails if the destination file already exists, while wasm-opt overwritesexisting files.Changes:- Remove existing output file before copying in wasm-opt fallback- Make DefaultPackagingSystem injectable for testing with custom which function- Add focused tests for DefaultPackagingSystem fallback behavior- Test both new and existing output file scenariosFixes issue where builds fail with 'File exists' error when wasm-optis unavailable and output file already exists from previous builds.
40c79f7 tob579fb1Comparea1e6905 intomain 8 checks passed
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Fixes a bug where PackageToJS builds fail when wasm-opt is not installed and the output file already exists.
The plugin falls back to copying the input file when wasm-opt is unavailable, but FileManager.copyItem throws an error if the destination exists. This causes "File exists" build failures.
The fix removes any existing output file before copying, matching wasm-opt's overwrite behavior. Also makes DefaultPackagingSystem injectable for cleaner testing.