A manifest with "private": true keeps its version out of the index. A Git
package that is private on the default branch is not listed at all, and the
generator warns when every bundle package of a repository is private. The
cache version is bumped so cached private releases are rebuilt.
Copy each plugin's manifest repository as its web page and package
directory, converting shorthands and Git URLs with hosted-git-info. Parse
options and generate help with commander.
Generate a validated format-1 plugin market index from a list of npm package
names and https Git repository URLs, without running package code.
- List every non-deprecated npm bundle version, and Git versions at release
tags and the default branch, each with its engines.dsh range.
- Read display fields, keywords, homepage, and icons the way DSH reads
installed plugins; inline small icons up to the format's 32 KiB limit.
- Cache results per immutable input and rewrite output only when it changes.
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