v0.10.0

Breaking changes

• Added a seed import (along abort and trace) for seeding the random number generator
• Arrays no longer inherit from ArrayBufferView, but are now distinct
• The loader API now more closely aligns with the WebAssembly API
• Various compiler API changes (i.e. decoupled the parser from the program)
• Classes initialized from object literals can no longer define a constructor
• Moved examples from the main repo to their own repo
• Modules now become validated by default (disable with --noValidate, --validate is gone)
• Reworked memory options (added --noExportMemory, --initialMemory, --maximumMemory, with --sharedMemory now being a boolean flag)
• Renamed the --asmjsFile command line option to --jsFile (alias: -j)

Improvements

• Simplified WASI integration via import "wasi" (implements abort, trace, seed)
• Implemented virtual overloading and interfaces (consider this minimal viable)
• Reworked optimization pass pipeline / more aggressive inlining
• Added support for Binaryen's lowMemoryUnused feature
• Added --lowMemoryLimit option for embedded scenarios with less than one page of memory
• Added support for StaticArray to the loader
• Non-MVP types are now always present to aid conditional compilation (i.e. same source, with and without SIMD)
• Added Array<T>#flat
• Updated stdlib to Unicode 13.0.0
• Added a --yes option to asinit to accept all prompts
• Added memory.data to explicitly create static memory segments
• Expose setArgumentsLength (for varargs calls) only when required
• Added v128.pmin<T>, v128.pmax<T>, v128.abs<T>, v128.bitmask<T> incl. their respective inline-assembler variants

Relevant fixes

• Fixed column numbers in diagnostics being off by one
• Made asc respect absolute output paths
• Fixed various issues with object literal compilation
• Fixed WASI struct sizes to match the specification
• Fixed default export issues

v0.9.4

Relevant fixes

• Fixed an unintended breaking compiler API change (affecting users of transforms).

v0.9.3

New features

• Added StaticArray<T>, a more efficient array variant
• Added support for context dependent sigma symbols to String#toLowerCase
• Refactored the compiler so it can compile itself (binary is not yet runnable)
• Added afterInitialize transform hook
• Updated Binaryen to latest

Relevant fixes

• Fixed various code generation, type propagation and resolver issues

v0.9.2

New features

• Added a --tableBase CLI option (like --memoryBase, but for tables)
• Added support for x instanceof GenericClass
• Updated Binaryen to latest

Relevant fixes

• Fixed null related edge cases when inferring array literals
• Fixed several code generation issues
• Aligned Map#set and Set#add with the spec, returning this
• Fixed WASI import scheme to be wasi_snapshot_preview1

v0.9.1

Relevant fixes

• Reverted exclusive use of the mutable __argumentsLength global introduced in 0.9.0 due to compatibility concerns with node < 12 and Safari. Exporting a __setArgumentsLength helper function for now. The loader has been updated to recognize both.

New features

• Updated Binaryen to latest. Might be relevant for users of transforms, where the exact same version is required.
• Command line options have been divided into categories to be easier to grasp, and documentation updated accordingly.

v0.9.0

Breaking changes

• The explicit start function generated with --explicitStart has been renamed to _start (was __start) to match WASI.
• The __setargc helper to set the number of arguments to a varargs call has been removed and replaced with an exported mutable global __argumentsLength. The loader has been updated accordingly.
• For consistency, the loader's __getInt8Array etc. functions now copy, and new __getInt8ArrayView functions with the old behavior have been introduced.
• The call_indirect builtin has been removed due to expected problems with closures.
• Distribution files are now being built with ES2016 as the target, exposing ES classes instead of ES5 prototypes.

New features

• Binaryen has AssemblyScript-specific optimization passes now targeting reference counting.
• Optimization pass order is no longer inherited from Binaryen but has been customized to account for AS specifics.
• Tables can now be exported using the --exportTable flag.
• The implementations of the Math functions exp, exp2, log, log2 and pow have been replaced with faster variants.
• New standard library functions: String#toUpperCase, String#toLowerCase, String#localeCompare. TypedArray#set
• The stub runtime now exports the __reset helper to clear the heap externally.
• Added support for the SIMD avgr_u family of instructions.
• Updated the WASI implementation to wasi_snapshot (preview1).
• The type of an array literal can now be inferred from its contents.
• The compiler can now detect if the entire program is acyclic (no cyclic classes), omitting unnecessary parts of the GC in this case.

And, of course, lots of fixes.

v0.8.1

• Reduced release dependencies to a minimum: binaryen and long
• Added support for the SIMD min_s, max_s, dot_i16x8_s family of instructions
• Fixed validation error on closure usage, now emits a proper diagnostic instead
• Fixed issues with scoped anyref typed locals
• Fixed definition of TypedArray.wrap
• Added support for node-like resolution of compiler transforms
• Fixed out of bound issues on Array[index] sets
• Updated math implementation to match latest musl fixes
• Removed unnecessary / broken loader dependencies

v0.8.0

Due to popular demand, this marks our first release of the standalone (non-prototype) compiler on npm.

Pre-runtime

This is the state before the new runtime functionality landed.