WARNING tree-sitter-syntax is currently experimental and isn't yet released. This package is intended for those developing on tree-sitter-syntax and want to early opt in to the minimap plugin.
You will need to clone the tree-sitter-syntax and install it manually:
git clonecd tree-sitter-syntaxapm installapm link
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.