fix excessive gleam.mjs
generation
#3300
Merged
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This patch fixes excessive generation by checking for file existence.
An earlier attempt (#3238) had done this by checking for empty
modules
, noting in its commit message that file existence checks will cause oldgleam.mjs
to never be updated when a new version is available. I have since learned that that was incorrect, as new versions ofgleam
deletebuild
folders created by previous versions.closes #3178