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JavaScript bridge for Ethereum — run npm packages (solc-js, Uniswap SDK, DeFiSaver) on the BEAM via QuickBEAM. Built on onchain.
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onchain_js
mix.exs
mix.exs
defmodule OnchainJs.MixProject do
use Mix.Project
@version "0.2.1"
@source_url "https://github.com/ZenHive/onchain_js"
def project do
[
app: :onchain_js,
version: @version,
# 1.18 floor inherited transitively from hieroglyph 1.6.0, whose encode
# path uses `Enum.sum_by/2` (Elixir 1.18+).
elixir: "~> 1.18",
start_permanent: Mix.env() == :prod,
elixirc_paths: elixirc_paths(Mix.env()),
aliases: aliases(),
deps: deps(),
dialyzer: dialyzer(),
description: description(),
package: package(),
docs: docs(),
source_url: @source_url
]
end
def cli do
[
preferred_envs: [
"test.json": :test,
"dialyzer.json": :dev
]
]
end
def application do
[
extra_applications: [:logger],
mod: {OnchainJs.Application, []}
]
end
defp deps do
[
# Floor raised 0.11 -> 0.12: onchain 0.12.0 is the release that raises
# `zen_websocket` to `~> 0.6.0`, which *requires* the gun version carrying
# the GHSA-w4f7-4cxr-rv3c fix rather than merely permitting it. `~> 0.11`
# admits 0.12.0 but does not require it, so this lock would keep resolving
# onchain 0.11.0 -> zen_websocket 0.4.2, whose looser gun bound only
# happens to have landed on a fixed 2.5.0. onchain 0.12.0 also narrows
# `descripex` to `~> 0.12.0`, matching what this package declares below.
{:onchain, "~> 0.12"},
{:quickbeam, "~> 0.10.4"},
{:npm, "~> 0.7"},
# Three-segment on purpose (caps at < 0.13.0): descripex 0.12.0 changed
# `short_name` in describe/1 output from atom to string at a *minor*
# bump, which the previous `~> 0.11` would have absorbed silently. A 0.x
# package that breaks on minor earns the tighter form; raise the cap
# deliberately after reading its CHANGELOG.
{:descripex, "~> 0.12.0"},
# Dev/test tooling
{:tidewave, "~> 0.6", only: :dev},
{:bandit, "~> 1.0", only: :dev},
{:ex_unit_json, "~> 0.4", only: [:dev, :test], runtime: false},
{:dialyzer_json, "~> 0.2", only: [:dev, :test], runtime: false},
{:styler, "~> 1.0", only: [:dev, :test], runtime: false},
{:credo, "~> 1.7", only: [:dev, :test], runtime: false},
{:dialyxir, "~> 1.4", only: [:dev, :test], runtime: false},
{:doctor, "~> 0.23", only: [:dev, :test], runtime: false},
{:sobelow, "~> 0.13", only: [:dev, :test], runtime: false},
{:ex_doc, "~> 0.40", only: :dev, runtime: false},
{:mix_audit, "~> 2.1", only: [:dev, :test], runtime: false},
{:ex_dna, "~> 1.5", only: [:dev, :test], runtime: false},
{:ex_ast, "~> 0.12", only: [:dev, :test], runtime: false},
{:reach, "~> 2.8", only: [:dev, :test], runtime: false}
]
end
defp description do
"JavaScript bridge for Ethereum — run npm packages (solc-js, Uniswap SDK, DeFiSaver) on the BEAM via QuickBEAM. Built on onchain."
end
defp package do
[
licenses: ["MIT"],
links: %{"GitHub" => @source_url},
# Explicit list because hex's default `files` ships all of `priv/`, and
# `priv/` here holds nothing but the dialyzer PLTs that `dialyzer/0`
# pins there (`plt_local_path`). .gitignore does not apply to
# `mix hex.build`, so 0.2.0 shipped an 11 MB tarball that was two whole
# generations of PLT (OTP 27 and OTP 29-rc) and ~40 KB of package. The
# Zig NIFs come from the `quickbeam` dep, not from this repo, so
# nothing under `priv/` needs to ship.
files: ~w(lib .formatter.exs mix.exs README.md LICENSE CHANGELOG.md)
]
end
defp docs do
[
main: "OnchainJs",
source_ref: "v#{@version}",
source_url: @source_url
]
end
defp aliases do
[
tidewave: [
"run --no-halt -e 'Agent.start(fn -> Bandit.start_link(plug: Tidewave, port: 4028) end)'"
],
# Fast local pre-commit loop — skips the cold-PLT dialyzer and the coverage
# pass so it stays quick on incremental edits.
precommit: [
"compile --warnings-as-errors",
"format --check-formatted",
"credo --strict --ignore Credo.Check.Design.TagTODO,Credo.Check.Design.TagFIXME",
# `preferred_envs` (cli/0) is ignored for alias steps — set MIX_ENV via
# `env` (Elixir 1.20's `mix cmd` no longer parses a leading VAR=val prefix).
"cmd env MIX_ENV=test mix test.json --exclude integration"
],
# Comprehensive gate — the harness reviewer's `check_command` and `mix ci`
# target. Coverage floor is 25 against a 27.78% measured baseline
# (2026-08-01) — this repo's lib/ surface is a thin 4-module bridge; most
# behavior is only exercised by the (excluded-by-default) QuickBEAM
# integration tests.
"precommit.full": [
"compile --warnings-as-errors",
"format --check-formatted",
"credo --strict --ignore Credo.Check.Design.TagTODO,Credo.Check.Design.TagFIXME",
"doctor --raise",
"ex_dna --max-clones 0",
"reach.check --arch --smells",
"sobelow --skip --exit low",
"deps.audit.gated",
"cmd env MIX_ENV=test mix test.json --cover --cover-threshold 25 --summary-only --exclude integration",
"dialyzer",
# AGENTS.md is what the cross-family (codex/cursor/grok) reviewers read;
# a stale render makes them gate against rules that already changed.
"agents.check"
],
# Fails when AGENTS.md has drifted from CLAUDE.md. Compares rendered output,
# not mtimes, so drift in a transitive @-import is caught too.
"agents.check": [
&agents_check/1
],
# mix_audit discards its sync exit status (mirego/mix_audit#61), so a frozen
# advisory DB still reports green. Prove freshness first, then audit.
"deps.audit.gated": [
&advisory_freshness/1,
"deps.audit --ignore-file .mix_audit_ignore"
],
ci: ["precommit.full"]
]
end
defp elixirc_paths(:test), do: ["lib", "test/support"]
defp elixirc_paths(_), do: ["lib"]
defp dialyzer do
[
# OOM mitigation: skip transitive deps (default is :app_tree).
# Tidewave/bandit's HTTP stack (plug, finch, mint, gun, cowlib, etc.)
# is not in lib/'s call graph and bloats PLT to ~800 modules.
plt_add_deps: :apps_direct,
plt_add_apps: [:mix],
plt_local_path: "priv/plts",
plt_core_path: "priv/plts",
ignore_warnings: ".dialyzer_ignore.exs"
]
end
# Both gates below shell out to scripts that live OUTSIDE this repo, on the
# developer host: the AGENTS.md renderer needs the claude-marketplace
# checkout plus ~/.claude/includes, and the advisory-freshness prover needs
# the local mix_audit mirror. Neither exists on a CI runner, and `mix cmd`
# with an absent path exits non-zero — which aborted the whole `mix ci`
# alias, and since these steps precede test.json/dialyzer it took the test,
# coverage and dialyzer signal down with it. Skip loudly when the script is
# absent so CI keeps running the checks it CAN run; the developer host and
# the harness reviewer still get the full gate.
@spec agents_check([String.t()]) :: :ok
defp agents_check(_args) do
host_script(
"~/_DATA/code/claude-marketplace/scripts/sync-agents-md.sh",
["--check"],
"AGENTS.md freshness check"
)
end
@spec advisory_freshness([String.t()]) :: :ok
defp advisory_freshness(_args) do
host_script(
"~/_DATA/code/onchain-stack/bin/advisory-freshness.sh",
[],
"advisory-mirror freshness check"
)
end
@spec host_script(String.t(), [String.t()], String.t()) :: :ok
defp host_script(path, args, label) do
expanded = Path.expand(path)
if File.exists?(expanded) do
{_out, status} =
System.cmd(expanded, args, into: IO.stream(:stdio, :line), stderr_to_stdout: true)
if status != 0 do
Mix.raise("#{label} failed (#{expanded} exited #{status})")
end
else
Mix.shell().info("[skip] #{label}: #{expanded} not found (developer-host script, absent in CI).")
end
:ok
end
end