Yarn.Lock.File

After parsing yarn.lock files in Parse, you want to convert the AST to something with more information and ultimately get a Lockfile.

yarn.lock files don’t follow a structured approach (like for example sum types), so information like e.g. the remote type have to be inferred frome AST values.

Documentation

fromPackages :: [Keyed Package] -> Lockfile

Press a list of packages into the lockfile structure.

It’s a dumb conversion, you should probably apply the decycle function afterwards.

astToPackage :: PackageFields -> Either (NonEmpty ConversionError) Package

Parse an AST PackageFields to a Package, which has the needed fields resolved.

Errors

data ConversionError

Possible errors when converting from AST.

Constructors

MissingField Text

field is missing

WrongType

this field has the wrong type

Fields

• fieldName :: Text
• fieldType :: Text

UnknownRemoteType

the remote (e.g. git, tar archive) could not be determined

Instances

Eq ConversionError

Methods

(==) :: ConversionError -> ConversionError -> Bool

(/=) :: ConversionError -> ConversionError -> Bool

Show ConversionError

Methods

showsPrec :: Int -> ConversionError -> ShowS

show :: ConversionError -> String

showList :: [ConversionError] -> ShowS