Documentation / @facturometro/einvoice / Rule

Interface: Rule<N>

Defined in: packages/validator/src/engine/rule.ts:74

A compiled validation rule: the specification's metadata and the logic that evaluates it.

when is a document-level gate evaluated once per document; context selects the nodes; test judges each one. The engine catches anything they throw and reports it as a fatal EINV-RULE-ERROR issue, so a rule can never abort a validation run.

Example

import type { Rule } from '@facturometro/validator';

const ids = (rules: readonly Rule[]) => rules.map((rule) => rule.id);

Type Parameters

N

N = unknown

Properties

bt

readonly bt: readonly string[]

Defined in: packages/validator/src/engine/rule.ts:76

Business terms (BT-*) the rule is about.

---

docsUrl?

readonly optional docsUrl?: string

Defined in: packages/validator/src/engine/rule.ts:86

Documentation page of the rule, when it has one.

---

family

readonly family: string

Defined in: packages/validator/src/engine/rule.ts:88

Rule family, e.g. BR-CO, PEPPOL-EN16931-R or national:DK; custom by default.

---

id

readonly id: string

Defined in: packages/validator/src/engine/rule.ts:90

Rule id, e.g. BR-CO-10.

---

message

readonly message: string

Defined in: packages/validator/src/engine/rule.ts:92

Message reported on failure, verbatim from the specification for spec rules.

---

severity

readonly severity: Severity

Defined in: packages/validator/src/engine/rule.ts:94

Whether a failure makes the document invalid.

---

when?

readonly optional when?: (ctx) => boolean

Defined in: packages/validator/src/engine/rule.ts:110

Document-level gate, evaluated once: when it returns false the rule is skipped.

Parameters

ctx

RuleContext

The rule context.

Returns

boolean

Whether the rule applies to the document.

Methods

context()

context(view, ctx): readonly Hit<N, unknown>[]

Defined in: packages/validator/src/engine/rule.ts:84

The nodes the rule applies to, with their model paths.

Parameters

view

DocumentView

The document view, whose selectors are memoized.

ctx

RuleContext

The rule context.

Returns

readonly Hit<N, unknown>[]

The hits, in document order.

---

test()

test(node, ctx, hit): Verdict

Defined in: packages/validator/src/engine/rule.ts:103

Judges one selected node.

Parameters

node

N

The node.

ctx

RuleContext

The rule context.

hit

Hit<N>

The node together with its path and parent.

Returns

Verdict

The verdict.