# `Arex.Options`
[🔗](https://github.com/m/exarcade/blob/v0.1.0/lib/arex/options.ex#L1)

Internal option normalization and precedence rules.

Resolution order is:

1. per-call options
2. application config for `:arex`
3. environment variables for `url`, `user`, `pwd`, and `db`

`language` is not env-backed. It comes from call options or
application config and otherwise defaults to `"sql"`.

The resolved output is the internal options map used throughout Arex. This
module validates boundary rules, normalizes string-like values, sanitizes
transport options, and ensures callers cannot bypass retry policy through
nested Req configuration.

`Arex.Options` is public mainly for transparency and extension work. Typical
application code should pass ordinary keyword lists to the public helpers and
let those helpers resolve options internally.

Use this module directly only when you are extending Arex or building wrapper
layers that need to mirror the library's exact precedence and validation
rules.

# `resolve`

Resolves Arex options into Arex's internal options map.

Already-resolved maps are returned unchanged. Keyword-list input is validated,
merged with config and environment fallback values, and normalized so
connection-related values become strings internally.

# `sanitize_req_options`

Removes Req retry settings so callers cannot bypass Arex retry rules.

This is applied before `req_options` are merged into the transport request.

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*Consult [api-reference.md](api-reference.md) for complete listing*