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purescript v0.8.0 Release Notes

Release Date: 2016-01-31 // about 8 years ago

  • 🚀 A massive thanks to everyone involved in this release!

    💥 Breaking Changes

    None, but there are lots of new warnings related to upcoming breaking changes in 0.9:

    • ⚠ Operators as aliases will become mandatory, and regular operators (as functions) will now generate warnings.
    • ⚠ Non-exhaustive functions will get a Partial constraint in 0.9, so the exhaustivity checker will now attempt to generate warnings by looking for Partial constraints in scope.
    • 🗄 The qualified import syntax has been deprecated.
    • 🗄 Class imports will use the new class syntax in 0.9 and the alternative syntax is deprecated.

    ✨ Enhancements

    • ➕ Add native Partial constraint (@garyb)
    • ⬇️ Reduce backtracking in parser to hopefully improve quality of parsing error messages (@paf31)
    • ⬇️ Drop requirement to parenthesize single constraints in instance contexts (@garyb)
    • Case expressions can now match multiple values (@natefaubion)
    • ➕ Add operator aliases (@garyb)
    • 👉 Show identifiers correctly in ctags (@nwolverson)
    • 🛠 Fix #1523, add --json-errors flag for editor integrations (@paf31)
    • ⚠ Error and warning corrections are now available to editors via --json-errors (@nwolverson)
    • Check integer values are within range in codegen (@garyb)
    • 👌 Support for unicode operators (@paf31)
    • 📜 The parser now supports unicode symbols for forall and function arrows (@DavidLindbom)
    • Module Imports
      • Use class keyword for class references in imports (@garyb)
      • Type imports no longer require () (@garyb)
      • Allow import hiding with qualified imports (@garyb)
      • Naming conflicts are now resolved at the use site (@garyb)
    • Error Messages
      • Fix #1662, display extra type info in instance errors (@paf31)
      • Add information about skolem constants to type errors (@paf31)
      • Sort rows in unification errors (@paf31)
    • ⚠ Warnings
      • Warn on unspecified imports (@garyb)
      • Warn when import X hiding (..) imports nothing (@garyb)
      • Warn on duplicate imports and exports (@garyb)
      • Warn about unused class imports (@garyb)

    🐛 Bug Fixes

    • ⚡️ Renamer updates, fixes naming bug in some unlikely situations (@garyb)
    • 🛠 Fix #1645, implement new indentation rules for types to avoid very wide errors (@paf31)
    • 🛠 Fix "resource exhausted" issue on MacOS (@mgmeier)
    • 🛠 Fix #1664, check kind before expanding wildcards. (@paf31)
    • 🛠 Fix up shadowed module names in JS codegen (@garyb)
    • 🛠 Fix #1185, fix #1369, add everythingWithScope traversal to correct some scoping issues. (@paf31)
    • 🛠 Fix two cases where errors were missing context (@garyb)
    • 🛠 Fix #1636, instantiate polytypes fully, even under constraints. (@paf31)
    • 🛠 Fix missing data constructors in re-exports (@garyb)
    • 🛠 Fix codegen error with instance for re-exported class (@garyb)
    • 🛠 Fix #1479, encode .js files as UTF8. (@paf31)
    • 🛠 Fix a bug related to redundancy checking in cases (#1853, @nicodelpiano)
    • 🛠 Fix a TCO/composition inlining bug (@garyb, @hdgarrood)
    • 🛠 Fix renaming for nested constructor binders (#1839, @sharkdp)
    • 🛠 Fix generic deriving bug with >1 type argument (@hdgarrood)
    • 🛠 Fix generate fresh binder names unless all names in case are equal (#1825, @paf31)
    • 🛠 Fix external require expressions when minifying (#1794, @paf31)
    • 📇 Rename foreign argument to fix compiling issue (@anttih)
    • 👍 Allow use of bottom integer (@garyb)

    Other

    • 🛠 Fix #1700, remove warnings for syntactic features removed in 0.7.0 (@paf31)
    • 🛠 Fix psc-publish test (@passy)
    • 📄 Relax rules for docs comments (#1820, @hdgarrood)
    • 👍 Qualified name lookup is now supported in PSCi (#974, @soupi)
    • https://github.com and [email protected] URLs are now allowed by psc-publish (@passy, @codedmart)
    • 📄 Docs are now generated for module re-exports (@hdgarrood)
    • 📄 Use friendly module name in psc-docs error (@nwolverson)
    • Distinguish between the different ProperNames (@garyb)
    • Warn about unspecified constructors in type imports (@garyb)
    • 🛠 Fix warning about values missing from virtual modules (@garyb)