v1.1.0: pooled runtime, 959 tests, production hardening (0 squash)

packages/imhotep-dsl/src/quantifiers.ts

@@ -0,0 +1,26 @@
+// Quantifier combinators for compositional expectations
+// all(), any(), none() wrap multiple assertions into quantified groups.
+
+import type { FluentAssertion, FluentRelation } from './fluent.js'
+
+export type ComposableAssertion = FluentAssertion | FluentRelation
+
+export interface QuantifiedGroup {
+  kind: 'all' | 'any' | 'none'
+  assertions: ComposableAssertion[]
+}
+
+/** Every assertion in the group must hold. */
+export function all(...assertions: ComposableAssertion[]): QuantifiedGroup {
+  return { kind: 'all', assertions }
+}
+
+/** At least one assertion in the group must hold. */
+export function any(...assertions: ComposableAssertion[]): QuantifiedGroup {
+  return { kind: 'any', assertions }
+}
+
+/** No assertion in the group may hold. */
+export function none(...assertions: ComposableAssertion[]): QuantifiedGroup {
+  return { kind: 'none', assertions }
+}