Add vocabulary relating to proposals, intentions and measures.

CHANGES.md

@@ -81,6 +81,15 @@ To be released.
 
 ### @fedify/vocab
 
+ -  Added vocabulary types for economic resource coordination
+    in federated networks.  [[#578] by scammo]
+ -  Added `Proposal` class for publishing offers or requests.
+ -  Added `Intent` class for describing economic transactions within
+    a proposal, with `action`, `resourceConformsTo`, `resourceQuantity`,
+    `availableQuantity`, and `minimumQuantity` properties.
+ -  Added `Measure` class for representing quantities with units of
+    measure, with `hasUnit` and `hasNumericalValue` properties.
+
  -  Fixed `Endpoints.toJsonLd()` to no longer emit invalid
     `"type": "as:Endpoints"` in the serialized JSON-LD.  The `as:Endpoints`
     type does not exist in the ActivityStreams vocabulary, and its presence
@@ -91,6 +100,7 @@ To be released.
     `"type": "as:Source"` in the serialized JSON-LD.  The `as:Source` type
     does not exist in the ActivityStreams vocabulary either.
 
+[#578]: https://github.com/fedify-dev/fedify/issues/578
 [browser.pub]: https://browser.pub/
 [#576]: https://github.com/fedify-dev/fedify/issues/576
 
@@ -610,6 +620,21 @@ Released on February 22, 2026.
      -  This package is primarily used by generated vocabulary classes and
         provides the runtime infrastructure for ActivityPub object processing.
 
+### @fedify/vocab
+
+ -  Added vocabulary types for economic resource coordination
+    in federated networks.  [[#578]]
+
+     -  Added `Proposal` class for publishing offers or requests.
+     -  Added `Intent` class for describing economic transactions within
+        a proposal, with `action`, `resourceConformsTo`, `resourceQuantity`,
+        `availableQuantity`, and `minimumQuantity` properties.
+     -  Added `Measure` class for representing quantities with units of
+        measure, with `hasUnit` and `hasNumericalValue` properties.
+
+[#578]: https://github.com/fedify-dev/fedify/issues/578
+[ValueFlows]: https://www.valueflo.ws/
+
 ### @fedify/elysia
 
  -  Added *deno.json* configuration file to enable proper Deno tooling support

packages/vocab/src/__snapshots__/vocab.test.ts.snap

@@ -369,6 +369,30 @@ snapshot[`Deno.inspect(PropertyValue) [auto] 2`] = `'PropertyValue { id: URL "ht
 
 snapshot[`Deno.inspect(PropertyValue) [auto] 3`] = `'PropertyValue { id: URL "https://example.com/", name: "hello", value: "hello" }'`;
 
+snapshot[`Deno.inspect(Measure) [auto] 1`] = `
+'Measure {
+  id: URL "https://example.com/",
+  hasUnit: "hello",
+  hasNumericalValue: "hello"
+}'
+`;
+
+snapshot[`Deno.inspect(Measure) [auto] 2`] = `
+'Measure {
+  id: URL "https://example.com/",
+  hasUnit: "hello",
+  hasNumericalValue: "hello"
+}'
+`;
+
+snapshot[`Deno.inspect(Measure) [auto] 3`] = `
+'Measure {
+  id: URL "https://example.com/",
+  hasUnit: "hello",
+  hasNumericalValue: "hello"
+}'
+`;
+
 snapshot[`Deno.inspect(Export) [auto] 1`] = `
 'Export {
   id: URL "https://example.com/",
@@ -537,6 +561,165 @@ snapshot[`Deno.inspect(Multikey) [auto] 3`] = `
 }'
 `;
 
+snapshot[`Deno.inspect(Intent) [auto] 1`] = `
+'Intent {
+  id: URL "https://example.com/",
+  action: "hello",
+  resourceConformsTo: URL "https://example.com/",
+  resourceQuantity: Measure {},
+  availableQuantity: Measure {},
+  minimumQuantity: Measure {}
+}'
+`;
+
+snapshot[`Deno.inspect(Intent) [auto] 2`] = `
+'Intent {
+  id: URL "https://example.com/",
+  action: "hello",
+  resourceConformsTo: URL "https://example.com/",
+  resourceQuantity: Measure {},
+  availableQuantity: Measure {},
+  minimumQuantity: Measure {}
+}'
+`;
+
+snapshot[`Deno.inspect(Intent) [auto] 3`] = `
+'Intent {
+  id: URL "https://example.com/",
+  action: "hello",
+  resourceConformsTo: URL "https://example.com/",
+  resourceQuantity: Measure {},
+  availableQuantity: Measure {},
+  minimumQuantity: Measure {}
+}'
+`;
+
+snapshot[`Deno.inspect(Proposal) [auto] 1`] = `
+'Proposal {
+  id: URL "https://example.com/",
+  attachments: [ Object {}, Link {}, PropertyValue {} ],
+  attributions: [ Application {}, Group {}, Organization {}, Person {}, Service {} ],
+  audience: Object {},
+  contents: [ "hello", <en> "hello" ],
+  contexts: [ Object {}, Link {} ],
+  names: [ "hello", <en> "hello" ],
+  endTime: 2024-03-03T08:30:06.796196096Z,
+  generators: [ Object {}, Link {} ],
+  icon: Image {},
+  image: Image {},
+  replyTargets: [ Object {}, Link {} ],
+  locations: [ Object {}, Link {} ],
+  previews: [ Link {}, Object {} ],
+  published: 2024-03-03T08:30:06.796196096Z,
+  replies: Collection {},
+  shares: Collection {},
+  likes: Collection {},
+  emojiReactions: Collection {},
+  startTime: 2024-03-03T08:30:06.796196096Z,
+  summaries: [ "hello", <en> "hello" ],
+  tags: [ Object {}, Link {} ],
+  updated: 2024-03-03T08:30:06.796196096Z,
+  urls: [ URL "https://example.com/", Link {} ],
+  to: Object {},
+  bto: Object {},
+  cc: Object {},
+  bcc: Object {},
+  mediaType: "hello",
+  duration: PT1H,
+  sensitive: true,
+  source: Source {},
+  proof: DataIntegrityProof {},
+  purpose: "hello",
+  publishes: Intent {},
+  reciprocal: Intent {},
+  unitBased: true
+}'
+`;
+
+snapshot[`Deno.inspect(Proposal) [auto] 2`] = `
+'Proposal {
+  id: URL "https://example.com/",
+  attachments: [ URL "https://example.com/" ],
+  attribution: URL "https://example.com/",
+  audience: URL "https://example.com/",
+  contents: [ "hello", <en> "hello" ],
+  contexts: [ URL "https://example.com/" ],
+  names: [ "hello", <en> "hello" ],
+  endTime: 2024-03-03T08:30:06.796196096Z,
+  generators: [ URL "https://example.com/" ],
+  icon: URL "https://example.com/",
+  image: URL "https://example.com/",
+  replyTarget: URL "https://example.com/",
+  location: URL "https://example.com/",
+  preview: URL "https://example.com/",
+  published: 2024-03-03T08:30:06.796196096Z,
+  replies: URL "https://example.com/",
+  shares: URL "https://example.com/",
+  likes: URL "https://example.com/",
+  emojiReactions: URL "https://example.com/",
+  startTime: 2024-03-03T08:30:06.796196096Z,
+  summaries: [ "hello", <en> "hello" ],
+  tags: [ URL "https://example.com/" ],
+  updated: 2024-03-03T08:30:06.796196096Z,
+  urls: [ URL "https://example.com/", Link {} ],
+  to: URL "https://example.com/",
+  bto: URL "https://example.com/",
+  cc: URL "https://example.com/",
+  bcc: URL "https://example.com/",
+  mediaType: "hello",
+  duration: PT1H,
+  sensitive: true,
+  source: Source {},
+  proof: URL "https://example.com/",
+  purpose: "hello",
+  publishes: URL "https://example.com/",
+  reciprocal: URL "https://example.com/",
+  unitBased: true
+}'
+`;
+
+snapshot[`Deno.inspect(Proposal) [auto] 3`] = `
+'Proposal {
+  id: URL "https://example.com/",
+  attachments: [ Object {}, Object {} ],
+  attributions: [ Application {}, Application {} ],
+  audiences: [ Object {}, Object {} ],
+  contents: [ "hello", "hello" ],
+  contexts: [ Object {}, Object {} ],
+  names: [ "hello", "hello" ],
+  endTime: 2024-03-03T08:30:06.796196096Z,
+  generators: [ Object {}, Object {} ],
+  icons: [ Image {}, Image {} ],
+  images: [ Image {}, Image {} ],
+  replyTargets: [ Object {}, Object {} ],
+  locations: [ Object {}, Object {} ],
+  previews: [ Link {}, Link {} ],
+  published: 2024-03-03T08:30:06.796196096Z,
+  replies: Collection {},
+  shares: Collection {},
+  likes: Collection {},
+  emojiReactions: Collection {},
+  startTime: 2024-03-03T08:30:06.796196096Z,
+  summaries: [ "hello", "hello" ],
+  tags: [ Object {}, Object {} ],
+  updated: 2024-03-03T08:30:06.796196096Z,
+  urls: [ URL "https://example.com/", URL "https://example.com/" ],
+  tos: [ Object {}, Object {} ],
+  btos: [ Object {}, Object {} ],
+  ccs: [ Object {}, Object {} ],
+  bccs: [ Object {}, Object {} ],
+  mediaType: "hello",
+  duration: PT1H,
+  sensitive: true,
+  source: Source {},
+  proofs: [ DataIntegrityProof {}, DataIntegrityProof {} ],
+  purpose: "hello",
+  publishes: Intent {},
+  reciprocal: Intent {},
+  unitBased: true
+}'
+`;
+
 snapshot[`Deno.inspect(Accept) [auto] 1`] = `
 'Accept {
   id: URL "https://example.com/",

packages/vocab/src/intent.yaml

@@ -0,0 +1,72 @@
+$schema: ../../vocab-tools/schema.yaml
+name: Intent
+compactName: Intent
+uri: "https://w3id.org/valueflows/ont/vf#Intent"
+entity: true
+description: |
+  A proposed economic transaction describing what is being offered or requested
+  in a {@link Proposal}.
+defaultContext:
+- "https://www.w3.org/ns/activitystreams"
+- vf: "https://w3id.org/valueflows/ont/vf#"
+  om2: "http://www.ontology-of-units-of-measure.org/resource/om-2/"
+  Intent: "vf:Intent"
+  action: "vf:action"
+  resourceConformsTo:
+    "@id": "vf:resourceConformsTo"
+    "@type": "@id"
+  resourceQuantity: "vf:resourceQuantity"
+  availableQuantity: "vf:availableQuantity"
+  minimumQuantity: "vf:minimumQuantity"
+  hasUnit: "om2:hasUnit"
+  hasNumericalValue: "om2:hasNumericalValue"
+
+properties:
+- singularName: action
+  functional: true
+  compactName: action
+  uri: "https://w3id.org/valueflows/ont/vf#action"
+  description: |
+    The type of economic transaction.  The value of this property should be
+    either `"deliverService"` or `"transfer"`.
+  range:
+  - "http://www.w3.org/2001/XMLSchema#string"
+
+- singularName: resourceConformsTo
+  functional: true
+  compactName: resourceConformsTo
+  uri: "https://w3id.org/valueflows/ont/vf#resourceConformsTo"
+  description: |
+    The type of an economic resource.  Could be any URI.
+  range:
+  - "http://www.w3.org/2001/XMLSchema#anyURI"
+
+- singularName: resourceQuantity
+  functional: true
+  compactName: resourceQuantity
+  uri: "https://w3id.org/valueflows/ont/vf#resourceQuantity"
+  untyped: true
+  description: |
+    The amount and unit of the economic resource.
+  range:
+  - "http://www.ontology-of-units-of-measure.org/resource/om-2/Measure"
+
+- singularName: availableQuantity
+  functional: true
+  compactName: availableQuantity
+  uri: "https://w3id.org/valueflows/ont/vf#availableQuantity"
+  untyped: true
+  description: |
+    The quantity of the offered resource currently available.
+  range:
+  - "http://www.ontology-of-units-of-measure.org/resource/om-2/Measure"
+
+- singularName: minimumQuantity
+  functional: true
+  compactName: minimumQuantity
+  uri: "https://w3id.org/valueflows/ont/vf#minimumQuantity"
+  untyped: true
+  description: |
+    The minimum possible quantity of the resource.
+  range:
+  - "http://www.ontology-of-units-of-measure.org/resource/om-2/Measure"

packages/vocab/src/measure.yaml

@@ -0,0 +1,32 @@
+$schema: ../../vocab-tools/schema.yaml
+name: Measure
+compactName: om2:Measure
+uri: "http://www.ontology-of-units-of-measure.org/resource/om-2/Measure"
+entity: false
+description: A quantity with a unit of measure.
+defaultContext:
+- "https://www.w3.org/ns/activitystreams"
+- om2: "http://www.ontology-of-units-of-measure.org/resource/om-2/"
+  hasUnit: "om2:hasUnit"
+  hasNumericalValue: "om2:hasNumericalValue"
+
+properties:
+- singularName: hasUnit
+  functional: true
+  compactName: hasUnit
+  uri: "http://www.ontology-of-units-of-measure.org/resource/om-2/hasUnit"
+  description: |
+    The name of the unit, according to the Ontology of units of Measure
+    classification.  The recommended unit for countable items is `"one"`.
+  range:
+  - "http://www.w3.org/2001/XMLSchema#string"
+
+- singularName: hasNumericalValue
+  functional: true
+  compactName: hasNumericalValue
+  uri: "http://www.ontology-of-units-of-measure.org/resource/om-2/hasNumericalValue"
+  description: |
+    The amount of the resource.  If not specified, arbitrary amounts can be
+    used when responding to the proposal.
+  range:
+  - "http://www.w3.org/2001/XMLSchema#string"