# @efforting.tech/rule-processing

Rule processing primitives

- [Source code](https://gitea.efforting.tech/efforting.tech/nodejs.esm-library/src/branch/main/source/rule-processing/resolver.mjs)

**TODO:** Write proper documentation for this module - currently just a sketch

## Class overview

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### Abstract_Resolver

Abstract base class that currently implements [`resolve()`](#f-Abstract_Resolver-resolve).

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### Chained_Resolver

Goes through every link in the chain and uses the first handler that was resolved.

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### Mapping_Resolver

Resolves handlers by key, either derived via a key function or simply by the item itself as key.

## Classes

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### Abstract_Resolver

<a name="f-Abstract_Resolver-resolve"></a>
#### function `resolve`
```js
function resolve(item)
```
Resolves an item by calling the handler returned by the concrete [`resolve_handler()`](#function-resolve_handler) function.