#Moon ConfigWeave

Layered configuration audit, implemented in MoonBit with a JSON CLI and reusable library API.

Repository: https://github.com/123123213weqw/moon-configweave
Package: 123123213weqw/moon_configweave@0.1.0
License: Apache-2.0
Release scope: 0.1.0 initial implementation. The broader competition proposal in docs/proposal.md is a reference design, not a claim that every planned capability is implemented.

#Implemented

Recursive JSON object merges; replace/append/unique array modes; optional strict types; path provenance histories; environment/config interpolation preserving whole-reference types; cycle/depth detection; secret propagation across scalar and container aliases; redaction; required/type/enum/range constraints; redacted environment comparisons. scripts/files.py imports JSON and TOML with Python tomllib.

#Build and run

Use MoonBit and Node.js 24. The core library supports JS, wasm, wasm-gc and native; the filesystem/HTTP/process CLI is JS only.

moon update
moon build --target js
moon run cmd/main --target js -- examples/scenario-1.json
node _build/js/debug/build/cmd/main/main.js examples/scenario-1.json

Pass - to read a UTF-8 JSON request from stdin. A single request must be at most 16 MiB. Successful requests print one JSON result; invalid requests exit nonzero. The host runner is a separate process and does not edit the input request file.

#Library use

moon add 123123213weqw/moon_configweave@0.1.0

In the consumer's moon.pkg:

import {
  "123123213weqw/moon_configweave" @engine,
  "moonbitlang/core/json",
}

fn example(request : Json) -> Json raise {
  @engine.execute(request)
}

execute(Json) -> Json raise is the standard JSON boundary. from_json, Value::to_json, and run(Value) -> Value raise provide a typed semantic value interface. Object ordering is not significant; numeric values use finite Double. Public domain functions are listed in pkg.generated.mbti.

#Tests

moon test --target js
moon test --target wasm
moon test --target wasm-gc
moon test --target native  # requires a C compiler
moon build --target js
node scripts/check.mjs
python -B scripts/reference.py

There are 8 checked fixture cases in tests/cases.json, executed both in MoonBit white-box tests and through the actual Node CLI. Independent reference checks use Python's standard library or separately written algorithms. Fixtures are synthetic and are not presented as production adoption evidence. See input and output examples and current boundaries.

#Current boundaries

Core input is JSON values; TOML is parsed by the optional Python 3.11+ host adapter. Secret fields and secret environment variable names must be designated explicitly. Default output is redacted; reveal=true explicitly returns plaintext. Origins record applied layer history, including replaced historical paths. Diff compares redacted values: changes between two hidden secret values cannot be detected from that report. No schema standard implementation. Arrays are compared as whole values. TOML date/time objects cannot be represented by the JSON adapter and are rejected.

See source and dependency attribution. This release does not establish competition eligibility or organizer acceptance.

InputError

source

pub(all) suberror InputError {
  InputError(String)
} derive(Eq, Show)

Resolution

source

type Resolution

Value

source

pub(all) enum Value {
  Null
  Bool(Bool)
  Number(Double)
  String(String)
  Array(Array[Value])
  Object(Map[String, Value])
} derive(Eq, @moonbitlang/core/debug.Debug
Debug)

Value::stringify

source

fn Value::stringify(self : Value) -> String

Value::to_json

source

fn Value::to_json(self : Value) -> Json

execute

source

fn execute(request : Json) -> Json raise

from_json

source

fn from_json(value : Json) -> Value

run

source

fn run(request : Value) -> Value raise

Source Files

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moon_configweave

#Moon ConfigWeave

#Implemented

#Build and run

#Library use

#Tests

#Current boundaries

#InputError

#Resolution

#Value

#Value::stringify

#Value::to_json

#execute

#from_json

#run

Source Files

InputError

Resolution

Value

Value::stringify

Value::to_json

execute

from_json

run