Maintainer	Profpatsch
Stability	experimental
Safe Haskell	None
Language	Haskell2010

Yarn.Lock

Contents

Errors

Description

The Yarn package manager improves on npm, because it writes yarn.lock files that contain a complete version resolution of all dependencies. This way a deterministic deployment can be guaranteed.

Synopsis

type Lockfile = MKMap PackageKey Package
parseFile :: FilePath -> IO (Either LockfileError Lockfile)
parse :: FilePath -> Text -> Either LockfileError Lockfile
prettyLockfileError :: LockfileError -> Text
data LockfileError
- = ParseError Text
- | PackageErrors (NonEmpty PackageErrorInfo)
data PackageErrorInfo = PackageErrorInfo {
- srcPos :: SourcePos
- convErrs :: NonEmpty ConversionError
}

Documentation

type Lockfile = MKMap PackageKey Package Source #

Yarn lockfile.

It is a multi-keyed map (each value can be referenced by multiple keys). This is achieved by using an intermediate key ik.

Attention: Might be changed to a newtype in a future release.

parseFile Source #

Arguments

:: FilePath	file to read
-> IO (Either LockfileError Lockfile)

Convenience function, combining all parsing steps.

The resulting Lockfile structure might not yet be optimal, see fromPackages.

parse Source #

Arguments

:: FilePath	name of the input file, used for the parser
-> Text	content of a `yarn.lock`
-> Either LockfileError Lockfile

For when you want to provide only the file contents.

Errors

prettyLockfileError :: LockfileError -> Text Source #

Pretty print a parsing error with sane default formatting.

data LockfileError Source #

Everything that can go wrong when parsing a Lockfile.

Constructors

ParseError Text	The initial parsing step failed
PackageErrors (NonEmpty PackageErrorInfo)	a package could not be parsed from the AST

Instances

Eq LockfileError Source #
Instance details Defined in Yarn.Lock Methods (==) :: LockfileError -> LockfileError -> Bool # (/=) :: LockfileError -> LockfileError -> Bool #
Show LockfileError Source #
Instance details Defined in Yarn.Lock Methods showsPrec :: Int -> LockfileError -> ShowS # show :: LockfileError -> String # showList :: [LockfileError] -> ShowS #

data PackageErrorInfo Source #

Information about package parsing errors.

Constructors

PackageErrorInfo
Fields srcPos :: SourcePos the position of the package in the original file convErrs :: NonEmpty ConversionError list of reasons for failure

Instances

Eq PackageErrorInfo Source #
Instance details Defined in Yarn.Lock Methods (==) :: PackageErrorInfo -> PackageErrorInfo -> Bool # (/=) :: PackageErrorInfo -> PackageErrorInfo -> Bool #
Show PackageErrorInfo Source #
Instance details Defined in Yarn.Lock Methods showsPrec :: Int -> PackageErrorInfo -> ShowS # show :: PackageErrorInfo -> String # showList :: [PackageErrorInfo] -> ShowS #