Collections

All 26 tested collection functions compile and produce correct results, verified with Vector{Int64} and Vector{Float64}.

Supported Functions

Function	Path	Notes
`sort`, `sort!`	Overlay	Full kwarg support (`rev=true`)
`filter`	Overlay	Predicate closures
`map`	Native	Closures compile correctly
`reduce`, `foldl`, `foldr`	Native
`sum`, `prod`	Native
`minimum`, `maximum`, `extrema`	Native
`any`, `all`	Native	Predicate closures
`count`	Overlay
`unique`	Overlay
`accumulate`	Native
`findmax`, `findmin`	Native
`argmax`, `argmin`	Overlay
`mapreduce`	Native
`foreach`	Overlay	Ref mutation pattern
`reverse` (Vector)	Native

Example

using WasmTarget

f_sort(v::Vector{Int64}) = sort(v, rev=true)
f_filter(v::Vector{Int64}) = filter(iseven, v)
f_map(v::Vector{Int64}) = map(x -> x * 2, v)

bytes = compile_multi([
    (f_sort, (Vector{Int64},)),
    (f_filter, (Vector{Int64},)),
    (f_map, (Vector{Int64},)),
])

Compositions

Functions compose correctly across native and overlay paths:

# 8-deep chain — all verified E2E
f(v::Vector{Int64})::Int64 = sum(unique(sort(filter(x -> x > 0, map(abs, accumulate(+, reverse(v)))))))

Array Mutation

All 16 mutation functions work via overlays:

push!, pop!, pushfirst!, popfirst!, insert!, deleteat!, append!, prepend!, splice!, resize!, empty!, fill!, copy, reverse, length, vec