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Opal v1.2.0 Release Notes

Release Date: 2021-07-28 // almost 3 years ago

  • ➕ Added

    • 👌 Support for multiple arguments in Hash#{merge, merge!, update} (#2187)
    • 👌 Support for Ruby 3.0 forward arguments: def a(...) puts(...) end (#2153)
    • 👌 Support for beginless and endless ranges: (1..), (..1) (#2150)
    • 👀 Preliminary support for **nil argument - see #2240 to note limitations (#2152)
    • Support for Random::Formatters which add methods #{hex,base64,urlsafe_base64,uuid,random_float,random_number,alphanumeric} to Random and SecureRandom (#2218)
    • 👍 Basic support for ObjectSpace finalizers and ObjectSpace::WeakMap (#2247)
    • 👍 A more robust support for encodings (especially binary strings) (#2235)
    • 👌 Support for "\x80" syntax in String literals (#2235)
    • ➕ Added String#+@, String#-@ (#2235)
    • 👌 Support for begin <CODE> end while <CONDITION> (#2255)
    • ➕ Added Hash#except and Hash#except! (#2243)
    • 📜 Parser 3.0: Implement pattern matching (as part of this {Array,Hash,Struct}#{deconstruct,deconstruct_keys} methods were added) (#2243)
    • [experimental] Reimplement Promise to make it bridged with JS native Promise, this new implementation can be used by requiring promise/v2 (#2220)

    🛠 Fixed

    • Encoding lookup was working only with uppercase names, not giving any errors for wrong ones (#2181, #2183, #2190)
    • 🛠 Fix Number#to_i with huge number (#2191)
    • ➕ Add regexp support to String#start_with (#2198)
    • String#bytes now works in strict mode (#2194)
    • 🛠 Fix nested module inclusion (#2053)
    • SecureRandom is now cryptographically secure on most platforms (#2218, #2170)
    • 🛠 Fix performance regression for Array#unshift on v8 > 7.1 (#2116)
    • String subclasses now call #initialize with multiple arguments correctly (with a limitation caused by the String immutability issue, that a source string must be the first argument and #initialize can't change its value) (#2238, #2185)
    • 🚚 Number#step is moved to Numeric (#2100)
    • 🛠 Fix class Class < superclass for invalid superclasses (#2123)
    • 🛠 Fix String#unpack("U*") on binary strings with latin1 high characters, fix performance regression on that call (#2235, #2189, #2129, #2099, #2094, #2000, #2128)
    • 🛠 Fix String#to_json output on some edge cases (#2235)
    • 👍 Rework class variables to support inheritance correctly (#2251)
    • ISO-8859-1 and US-ASCII encodings are now separated as in MRI (#2235)
    • String#b no longer modifies object strings in-place (#2235)
    • Parser::Builder::Default.check_lvar_name patch (#2195)

    🔄 Changed

    • String#unpack, Array#pack, String#chars, String#length, Number#chr, and (only partially) String#+ are now encoding aware (#2235)
    • String#inspect now uses \x for binary stirngs (#2235)
    • 💎 if RUBY_ENGINE == "opal" and friends are now outputing less JS code (#2159, #1965)
    • Array: to_a, slice/[], uniq, *, difference/-, intersection/&, union/|, flatten now return Array, not a subclass, as Ruby 3.0 does (#2237)
    • Array: difference, intersection, union now accept multiple arguments (#2237)

    🗄 Deprecated

    • ✅ Stopped testing Opal on Ruby 2.5 since it reached EOL.

    ✂ Removed

    • ✂ Removed support for the outdated c_lexer, it was optional and didn't work for the last few releases of parser (#2235)