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Added

  • Added Module#prepend and completely overhauled the module and class inheritance system (#1826)

  • Methods and properties are now assigned with Object.defineProperty() as non-enumerable (#1821)

  • Backtrace now includes the location inside the source file for syntax errors (#1814)

  • Added support for a faster C-implemented lexer, it's enough to add gem 'c_lexer to the Gemfile (#1806)

  • Added Date#to_n that returns the JavaScript Date object (in native.rb). (#1779, #1792)

  • Added Array#pack (supports only C, S, L, Q, c, s, l, q, A, a formats). (#1723)

  • Added String#unpack (supports only C, S, L, Q, S>, L>, Q>, c, s, l, q, n, N, v, V, U, w, A, a, Z, B, b, H, h, u, M, m formats). (#1723)

  • Added File#symlink? for Node.js. (#1725)

  • Added Dir#glob for Node.js (does not support flags). (#1727)

  • Added support for a static folder in the "server" CLI runner via the OPAL_CLI_RUNNERS_SERVER_STATIC_FOLDER env var

  • Added the CLI option --runner-options that allows passing arbitrary options to the selected runner, currently the only runner making use of them is server accepting port and static_folder

  • Added a short helper to navigate constants manually: E.g. Opal.$$.Regexp.$$.IGNORECASE (see docs for "Compiled Ruby")

  • Added initial support for OpenURI module (using XMLHttpRequest on browser and xmlhttprequest on Node). (#1735)

  • Added String#prepend to the list of unsupported methods (because String are immutable in JavaScript)

  • Added methods (most introduced in 2.4/2.5):

    • Array#prepend (#1757)
    • Array#append (#1757)
    • Array#max (#1757)
    • Array#min (#1757)
    • Complex#finite? (#1757)
    • Complex#infinite? (#1757)
    • Complex#infinite? (#1757)
    • Date#to_time (#1757)
    • Date#next_year (#1885)
    • Date#prev_year (#1885)
    • Hash#slice (#1757)
    • Hash#transform_keys (#1757)
    • Hash#transform_keys! (#1757)
    • Numeric#finite? (#1757)
    • Numeric#infinite? (#1757)
    • Numeric#infinite? (#1757)
    • Integer#allbits? (#1757)
    • Integer#anybits? (#1757)
    • Integer#digits (#1757)
    • Integer#nobits? (#1757)
    • Integer#pow (#1757)
    • Integer#remainder (#1757)
    • Integer.sqrt (#1757)
    • Random.urandom (#1757)
    • String#delete_prefix (#1757)
    • String#delete_suffix (#1757)
    • String#casecmp? (#1757)
    • Kernel#yield_self (#1757)
    • String#unpack1 (#1757)
    • String#to_r (#1842)
    • String#to_c (#1842)
    • String#match? (#1842)
    • String#unicode_normalize returns self (#1842)
    • String#unicode_normalized? returns true (#1842)
    • String#[]= throws NotImplementedError(#1836)

  • Added support of the pattern argument for Enumerable#all?, Enumerable#any?, Enumerable#none?. (#1757)

  • Added ndigits option support to Number#floor, Number#ceil, Number#truncate. (#1757)

  • Added key and receiver attributes to the KeyError. (#1757)

  • Extended Struct.new to support keyword_init option. (#1757)

  • Added a new Opal::Config.missing_require_severity option and relative --missing-require CLI flag. This option will command how the builder will behave when a required file is missing. Previously the behavior was undefined and partly controlled by dynamic_require_severity. Not to be confused with the runtime config option Opal.config.missing_require_severity; which controls the runtime behavior.

  • Added Matrix (along with the internal MRI utility E2MM)

  • Use shorter helpers for constant lookups, $$ for relative (nesting) lookups and $$$ for absolute (qualified) lookups

  • Add support for the Mersenne Twister random generator, the same used by CRuby/MRI (#657 & #1891)

  • [Nodejs] Added support for binary data in OpenURI (#1911, #1920)

  • [Nodejs] Added support for binary data in File#read (#1919, #1921)

  • [Nodejs] Added support for File#readlines (#1882)

  • [Nodejs] Added support for ENV#[], ENV#[]=, ENV#key?, ENV#has_key?, ENV#include?, ENV#member?, ENV#empty?, ENV#keys, ENV#delete and ENV#to_s (#1928)

Changed

  • BREAKING The dot (.) character is no longer replaced with [\s\S] in a multiline regexp passed to Regexp#match and Regexp#match? (#1796, #1795)
    • You're advised to always use [\s\S] instead of . in a multiline regexp, which is portable between Ruby and JavaScript
  • BREAKING Kernel#format (and sprintf alias) are now in a dedicated module corelib/kernel/format and available exclusively in opal (#1930)
    • Previously the methods were part of the corelib/kernel module and available in both opal and opal/mini
  • Filename extensions are no longer stripped from filenames internally, resulting in better error reporting (#1804)
  • The internal API for CLI runners has changed, now it's just a callable object
  • The --map CLI option now works only in conjunction with --compile (or --runner compiler)
  • The node CLI runner now adds its NODE_PATH entry instead of replacing the ENV var altogether
  • Added --disable-web-security option flag to the Chrome headless runner to be able to do XMLHttpRequest
  • Migrated parser to 2.5. Bump RUBY_VERSION to 2.5.0.
  • Exceptions raised during the compilation now add to the backtrace the current location of the opal file if available (#1814).
  • Better use of displayName on functions and methods and more readable temp variable names (#1910)
  • Source-maps are now inlined and already contain sources, incredibly more stable and precise (#1856)

Deprecated

  • The CLI --server-port 1234 option is now deprecated in favor of using --runner-options='{"port": 1234}'
  • Including ::Native is now deprecated because it generates conflicts with core classes in constant lookups (both Native::Object and Native::Array exist). Instead Native::Werapper should be used.
  • Using node_require 'my_module' to access the native require() function in Node.js is deprecated in favor of `require('my_module')` because static builders need to parse the call in order to function (#1886).

Removed

  • The node CLI runner no longer supports passing extra node options via the NODE_OPT env var, instead Node.js natively supports the NODE_OPTIONS env var.
  • The gem "hike" is no longer an external dependency and is now an internal dependency available as Opal::Hike (#1881)
  • Removed the internal Opal class Marshal::BinaryString (#1914)
  • Removed Racc, as it's now replaced by the parser gem (#1880)

Fixed

  • Fix handling of trailing semicolons and JavaScript returns inside x-strings, the behavior is now well defined and covered by proper specs (#1776)
  • Fixed singleton method definition to return method name. (#1757)
  • Allow passing number of months to Date#next_month and Date#prev_month. (#1757)
  • Fixed pattern argument handling for Enumerable#grep and Enumerable#grep_v. (#1757)
  • Raise ArgumentError instead of TypeError from Numeric#step when step is not a number. (#1757)
  • At run-time LoadError wasn't being raised even with Opal.config.missing_require_severity; set to 'error'.
  • Fixed Kernel#public_methods to return instance methods if the argument is set to false. (#1848)
  • Fixed an issue in String#gsub that made it start an infinite loop when used recursively. (#1879)
  • Kernel#exit was using status 0 when a number or a generic object was provided, now accepts numbers and tries to convert objects with #to_int (#1898, #1808).
  • Fixed metaclass inheritance in subclasses of Module (#1901)
  • Method#to_proc now correctly sets parameters and arity on the resulting Proc (#1903)
  • Fixed bridged classes having their prototype removed from the original chain by separating them from the Ruby class (#1909)
  • Improve String#to_proc performance (#1888)
  • Fixed/updated the examples (#1887)
  • Opal.ancestors() now returns false for when provided with JS-falsy objects (#1839)
  • When subclassing now the constant is set before calling ::inherited (#1838)
  • String#to_sym now returns the string literal (#1835)
  • String#center now correctly checks length (#1833)
  • redo inside while now works properly (#1820)
  • Fixed compilation of empty/whitespace-only x-strings (#1811)
  • Fix ||= assignments on constants when the constant is not yet defined (#1935)
  • Fix String#chomp to return an empty String when arg == self (#1936)