#moondiff

Difftool that aware MoonBit language syntax.

Inspired by difftastic

Try it in playground: https://moonbit-community.github.io/moondiff/

#CLI

moondiff [--ignore-comments] [--ignore-tests] old-file new-file

--ignore-tests is off by default and applies only when both paths end in .mbt. After both MoonBit inputs parse successfully, top-level test and async test blocks are removed from lexical and AST comparison, together with their leading documentation comments, ///|UUID(...) markers, and ///| separators. Test-only changes report no changes; when production code also changes, only that production change is highlighted. Imports such as import { ... } for "test" remain ordinary source and are still compared.

--ignore-comments independently excludes comments and blank-line-only changes. The flags can be combined. If either MoonBit input fails to parse, the CLI retains its existing whole-file lexical fallback; --ignore-tests is not guaranteed to filter that fallback. Non-.mbt inputs always use the plain line diff and are unaffected by either MoonBit filter.

#install (unfinish)

#Use Moondiff in Git Repository (unfinish)

configure git to use the installed wasm as an optional diff tool within that repository:

git config diff.tool moondiff
git config difftool.moondiff.cmd 'bash "$HOME/.local/share/moondiff/moondiff_git_wrapper.sh" "$LOCAL" "$REMOTE" "$MERGED"'
git config difftool.prompt false

usage:

git difftool <commit>^ <commit> # view diff for a specific commit
git difftool <edited file>

Source Files

main.mbt

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