TS: Array setters/getters for unbounded (max: *) slices

assets/api/writer-generator/typescript/profile-helpers.ts

@@ -296,6 +296,26 @@ export const getArraySlice = <T>(list: readonly T[] | undefined, match: Record<s
     return list.find((item) => matchesValue(item, match));
 };
 
+/** Return all elements in `list` that satisfy the slice discriminator `match`. */
+export const getArraySliceAll = <T>(list: readonly T[] | undefined, match: Record<string, unknown>): T[] => {
+    if (!list) return [];
+    return list.filter((item) => matchesValue(item, match));
+};
+
+/**
+ * Replace all elements matching `match` in `list` with `newItems`.
+ * Each new item has the discriminator values applied via {@link applySliceMatch}
+ * before this call, so this helper only handles the array surgery.
+ */
+export const setArraySliceAll = <T>(list: T[], match: Record<string, unknown>, newItems: T[]): void => {
+    // Remove all existing items that match the discriminator
+    for (let i = list.length - 1; i >= 0; i--) {
+        if (matchesValue(list[i], match)) list.splice(i, 1);
+    }
+    // Append new items
+    list.push(...newItems);
+};
+
 // ---------------------------------------------------------------------------
 // Validation helpers
 //

examples/local-package-folder/profile-typed-bundle.test.ts

@@ -17,62 +17,112 @@ import type { Patient } from "./fhir-types/hl7-fhir-r4-core/Patient";
 const smithPatient: Patient = { resourceType: "Patient", name: [{ family: "Smith" }] };
 const activePatient: Patient = { resourceType: "Patient", active: true };
 const clinicOrg: Organization = { resourceType: "Organization", name: "Clinic" };
+const acmeOrg: Organization = { resourceType: "Organization", name: "Acme" };
 
-describe("type-discriminated bundle slices", () => {
-    test("create() starts with no entry — PatientEntry must be set by user", () => {
+describe("demo: single-element slice (max: 1) — PatientEntry", () => {
+    test("create, set, and validate a typed patient entry", () => {
         const bundle = ExampleTypedBundleProfile.create({ type: "collection" });
-        expect(bundle.toResource().entry).toBeUndefined();
+
+        // No entry yet — validation fails (PatientEntry min: 1)
         expect(bundle.validate().errors).toEqual([
             "ExampleTypedBundle.entry: slice 'PatientEntry' requires at least 1 item(s), found 0",
         ]);
-    });
 
-    test("setPatientEntry inserts a typed patient entry", () => {
-        const bundle = ExampleTypedBundleProfile.create({ type: "collection" });
+        // Set a single patient entry — typed as BundleEntry<Patient>
         bundle.setPatientEntry({ resource: smithPatient });
+        expect(bundle.validate().errors).toEqual([]);
 
+        // Getter returns the entry with resource narrowed to Patient
         const entry = bundle.getPatientEntry()!;
         expect(entry.resource).toEqual(smithPatient);
-        expect(bundle.validate().errors).toEqual([]);
     });
 
-    test("setPatientEntry replaces existing patient entry (no duplicates)", () => {
+    test("setPatientEntry replaces existing entry (no duplicates)", () => {
         const bundle = ExampleTypedBundleProfile.create({ type: "collection" });
         bundle.setPatientEntry({ resource: smithPatient });
         bundle.setPatientEntry({ resource: activePatient });
 
-        const entries = bundle.toResource().entry!;
-        expect(entries).toHaveLength(1);
-        expect(entries[0]!.resource).toEqual(activePatient);
+        // Only one patient entry — the second call replaced the first
+        expect(bundle.toResource().entry).toHaveLength(1);
+        expect(bundle.getPatientEntry()!.resource).toEqual(activePatient);
     });
+});
 
-    test("getPatientEntry('flat') returns the entry as-is (no keys stripped)", () => {
-        const bundle = ExampleTypedBundleProfile.create({ type: "collection" });
-        bundle.setPatientEntry({ fullUrl: "urn:uuid:patient-1", resource: activePatient });
+describe("demo: unbounded slice (max: *) — OrganizationEntry", () => {
+    test("setter accepts an array, getter returns an array", () => {
+        const bundle = ExampleTypedBundleProfile.create({ type: "collection" }).setPatientEntry({
+            resource: activePatient,
+        });
+
+        // Set multiple organization entries at once
+        bundle.setOrganizationEntry([{ resource: clinicOrg }, { resource: acmeOrg }]);
 
-        const flat = bundle.getPatientEntry("flat")!;
-        expect(flat.fullUrl).toBe("urn:uuid:patient-1");
-        expect(flat.resource).toEqual(activePatient);
+        // Getter returns all matching entries as an array (undefined if none)
+        const orgs = bundle.getOrganizationEntry()!;
+        expect(orgs).toHaveLength(2);
+        expect(orgs[0]!.resource).toEqual(clinicOrg);
+        expect(orgs[1]!.resource).toEqual(acmeOrg);
+
+        // Total entries: 1 patient + 2 organizations
+        expect(bundle.toResource().entry).toHaveLength(3);
     });
 
-    test("fluent chaining across slice setters", () => {
+    test("setOrganizationEntry replaces all previous org entries", () => {
         const bundle = ExampleTypedBundleProfile.create({ type: "collection" })
             .setPatientEntry({ resource: activePatient })
-            .setOrganizationEntry({ resource: clinicOrg });
+            .setOrganizationEntry([{ resource: clinicOrg }, { resource: acmeOrg }]);
+
+        // Replace with a single org — previous two are removed
+        bundle.setOrganizationEntry([{ resource: { resourceType: "Organization", name: "NewCo" } }]);
+
+        const orgs = bundle.getOrganizationEntry()!;
+        expect(orgs).toHaveLength(1);
+        expect(orgs[0]!.resource!.name).toBe("NewCo");
 
-        expect(bundle.toResource().entry).toHaveLength(2);
+        // Patient entry unaffected
         expect(bundle.getPatientEntry()!.resource).toEqual(activePatient);
-        expect(bundle.getOrganizationEntry()!.resource).toEqual(clinicOrg);
     });
 
-    test("setOrganizationEntry replaces existing org entry (same discriminator)", () => {
+    test("append to existing entries via spread", () => {
         const bundle = ExampleTypedBundleProfile.create({ type: "collection" })
             .setPatientEntry({ resource: activePatient })
-            .setOrganizationEntry({ resource: clinicOrg })
-            .setOrganizationEntry({ resource: { resourceType: "Organization", name: "Acme" } });
+            .setOrganizationEntry([{ resource: clinicOrg }]);
+
+        // Append a new org by spreading existing entries
+        bundle.setOrganizationEntry([...(bundle.getOrganizationEntry() ?? []), { resource: acmeOrg }]);
+
+        const orgs = bundle.getOrganizationEntry()!;
+        expect(orgs).toHaveLength(2);
+        expect(orgs[0]!.resource).toEqual(clinicOrg);
+        expect(orgs[1]!.resource).toEqual(acmeOrg);
+    });
+
+    test("empty array removes all org entries, getter returns undefined", () => {
+        const bundle = ExampleTypedBundleProfile.create({ type: "collection" })
+            .setPatientEntry({ resource: activePatient })
+            .setOrganizationEntry([{ resource: clinicOrg }]);
+
+        bundle.setOrganizationEntry([]);
+
+        // No matching entries — returns undefined, not empty array
+        expect(bundle.getOrganizationEntry()).toBeUndefined();
+        // Patient entry still present
+        expect(bundle.toResource().entry).toHaveLength(1);
+    });
+});
+
+describe("fluent chaining across slice types", () => {
+    test("chain single and array setters", () => {
+        const bundle = ExampleTypedBundleProfile.create({ type: "collection" })
+            .setPatientEntry({ fullUrl: "urn:uuid:patient-1", resource: activePatient })
+            .setOrganizationEntry([
+                { fullUrl: "urn:uuid:org-1", resource: clinicOrg },
+                { fullUrl: "urn:uuid:org-2", resource: acmeOrg },
+            ]);
 
-        const entries = bundle.toResource().entry!;
-        expect(entries).toHaveLength(2);
-        expect(bundle.getOrganizationEntry()!.resource!.name).toBe("Acme");
+        expect(bundle.toResource().entry).toHaveLength(3);
+        expect(bundle.getPatientEntry()!.fullUrl).toBe("urn:uuid:patient-1");
+        expect(bundle.getOrganizationEntry()![0]!.fullUrl).toBe("urn:uuid:org-1");
+        expect(bundle.getOrganizationEntry()![1]!.fullUrl).toBe("urn:uuid:org-2");
     });
 });

examples/typescript-r4/fhir-types/profile-helpers.ts

@@ -296,6 +296,26 @@ export const getArraySlice = <T>(list: readonly T[] | undefined, match: Record<s
     return list.find((item) => matchesValue(item, match));
 };
 
+/** Return all elements in `list` that satisfy the slice discriminator `match`. */
+export const getArraySliceAll = <T>(list: readonly T[] | undefined, match: Record<string, unknown>): T[] => {
+    if (!list) return [];
+    return list.filter((item) => matchesValue(item, match));
+};
+
+/**
+ * Replace all elements matching `match` in `list` with `newItems`.
+ * Each new item has the discriminator values applied via {@link applySliceMatch}
+ * before this call, so this helper only handles the array surgery.
+ */
+export const setArraySliceAll = <T>(list: T[], match: Record<string, unknown>, newItems: T[]): void => {
+    // Remove all existing items that match the discriminator
+    for (let i = list.length - 1; i >= 0; i--) {
+        if (matchesValue(list[i], match)) list.splice(i, 1);
+    }
+    // Append new items
+    list.push(...newItems);
+};
+
 // ---------------------------------------------------------------------------
 // Validation helpers
 //

examples/typescript-us-core/fhir-types/hl7-fhir-us-core/profiles/Extension_USCoreEthnicityExtension.ts

@@ -23,6 +23,8 @@ import {
     setArraySlice,
     getArraySlice,
     ensureSliceDefaults,
+    setArraySliceAll,
+    getArraySliceAll,
     wrapSliceChoice,
     unwrapSliceChoice,
     isExtension,
@@ -186,15 +188,11 @@ export class USCoreEthnicityExtensionProfile {
         return this
     }
 
-    public setExtensionDetailed (input?: USCoreEthnicityExtension_Extension_DetailedSliceFlat | Extension): this {
+    public setExtensionDetailed (input: (USCoreEthnicityExtension_Extension_DetailedSliceFlat | Extension)[]): this {
         const match = USCoreEthnicityExtensionProfile.detailedSliceMatch
-        if (input && matchesValue(input, match)) {
-            setArraySlice(this.resource.extension ??= [], match, input as Extension)
-            return this
-        }
-        const wrapped = wrapSliceChoice<Extension>(input ?? {}, "valueCoding")
-        const value = applySliceMatch<Extension>(wrapped, match)
-        setArraySlice(this.resource.extension ??= [], match, value)
+        const arr = this.resource.extension ??= []
+        const values = input.map(item => matchesValue(item, match) ? item as Extension : applySliceMatch<Extension>(wrapSliceChoice<Extension>(item, "valueCoding"), match))
+        setArraySliceAll(arr, match, values)
         return this
     }
 
@@ -220,15 +218,15 @@ export class USCoreEthnicityExtensionProfile {
         return unwrapSliceChoice<USCoreEthnicityExtension_Extension_OmbCategorySliceFlatAll>(item, ["url"], "valueCoding")
     }
 
-    public getExtensionDetailed(mode: 'flat'): USCoreEthnicityExtension_Extension_DetailedSliceFlatAll | undefined;
-    public getExtensionDetailed(mode: 'raw'): Extension | undefined;
-    public getExtensionDetailed(): USCoreEthnicityExtension_Extension_DetailedSliceFlatAll | undefined;
-    public getExtensionDetailed (mode: 'flat' | 'raw' = 'flat'): USCoreEthnicityExtension_Extension_DetailedSliceFlatAll | Extension | undefined {
+    public getExtensionDetailed(mode: 'flat'): USCoreEthnicityExtension_Extension_DetailedSliceFlatAll[] | undefined;
+    public getExtensionDetailed(mode: 'raw'): Extension[] | undefined;
+    public getExtensionDetailed(): USCoreEthnicityExtension_Extension_DetailedSliceFlatAll[] | undefined;
+    public getExtensionDetailed (mode: 'flat' | 'raw' = 'flat'): (USCoreEthnicityExtension_Extension_DetailedSliceFlatAll | Extension)[] | undefined {
         const match = USCoreEthnicityExtensionProfile.detailedSliceMatch
-        const item = getArraySlice(this.resource.extension, match)
-        if (!item) return undefined
-        if (mode === 'raw') return item
-        return unwrapSliceChoice<USCoreEthnicityExtension_Extension_DetailedSliceFlatAll>(item, ["url"], "valueCoding")
+        const items = getArraySliceAll(this.resource.extension, match)
+        if (items.length === 0) return undefined
+        if (mode === 'raw') return items
+        return items.map(item => unwrapSliceChoice<USCoreEthnicityExtension_Extension_DetailedSliceFlatAll>(item, ["url"], "valueCoding"))
     }
 
     public getExtensionText(mode: 'flat'): USCoreEthnicityExtension_Extension_TextSliceFlatAll | undefined;

examples/typescript-us-core/fhir-types/hl7-fhir-us-core/profiles/Extension_USCoreRaceExtension.ts

@@ -23,6 +23,8 @@ import {
     setArraySlice,
     getArraySlice,
     ensureSliceDefaults,
+    setArraySliceAll,
+    getArraySliceAll,
     wrapSliceChoice,
     unwrapSliceChoice,
     isExtension,
@@ -186,15 +188,11 @@ export class USCoreRaceExtensionProfile {
         return this
     }
 
-    public setExtensionDetailed (input?: USCoreRaceExtension_Extension_DetailedSliceFlat | Extension): this {
+    public setExtensionDetailed (input: (USCoreRaceExtension_Extension_DetailedSliceFlat | Extension)[]): this {
         const match = USCoreRaceExtensionProfile.detailedSliceMatch
-        if (input && matchesValue(input, match)) {
-            setArraySlice(this.resource.extension ??= [], match, input as Extension)
-            return this
-        }
-        const wrapped = wrapSliceChoice<Extension>(input ?? {}, "valueCoding")
-        const value = applySliceMatch<Extension>(wrapped, match)
-        setArraySlice(this.resource.extension ??= [], match, value)
+        const arr = this.resource.extension ??= []
+        const values = input.map(item => matchesValue(item, match) ? item as Extension : applySliceMatch<Extension>(wrapSliceChoice<Extension>(item, "valueCoding"), match))
+        setArraySliceAll(arr, match, values)
         return this
     }
 
@@ -220,15 +218,15 @@ export class USCoreRaceExtensionProfile {
         return unwrapSliceChoice<USCoreRaceExtension_Extension_OmbCategorySliceFlatAll>(item, ["url"], "valueCoding")
     }
 
-    public getExtensionDetailed(mode: 'flat'): USCoreRaceExtension_Extension_DetailedSliceFlatAll | undefined;
-    public getExtensionDetailed(mode: 'raw'): Extension | undefined;
-    public getExtensionDetailed(): USCoreRaceExtension_Extension_DetailedSliceFlatAll | undefined;
-    public getExtensionDetailed (mode: 'flat' | 'raw' = 'flat'): USCoreRaceExtension_Extension_DetailedSliceFlatAll | Extension | undefined {
+    public getExtensionDetailed(mode: 'flat'): USCoreRaceExtension_Extension_DetailedSliceFlatAll[] | undefined;
+    public getExtensionDetailed(mode: 'raw'): Extension[] | undefined;
+    public getExtensionDetailed(): USCoreRaceExtension_Extension_DetailedSliceFlatAll[] | undefined;
+    public getExtensionDetailed (mode: 'flat' | 'raw' = 'flat'): (USCoreRaceExtension_Extension_DetailedSliceFlatAll | Extension)[] | undefined {
         const match = USCoreRaceExtensionProfile.detailedSliceMatch
-        const item = getArraySlice(this.resource.extension, match)
-        if (!item) return undefined
-        if (mode === 'raw') return item
-        return unwrapSliceChoice<USCoreRaceExtension_Extension_DetailedSliceFlatAll>(item, ["url"], "valueCoding")
+        const items = getArraySliceAll(this.resource.extension, match)
+        if (items.length === 0) return undefined
+        if (mode === 'raw') return items
+        return items.map(item => unwrapSliceChoice<USCoreRaceExtension_Extension_DetailedSliceFlatAll>(item, ["url"], "valueCoding"))
     }
 
     public getExtensionText(mode: 'flat'): USCoreRaceExtension_Extension_TextSliceFlatAll | undefined;

examples/typescript-us-core/fhir-types/profile-helpers.ts

@@ -296,6 +296,26 @@ export const getArraySlice = <T>(list: readonly T[] | undefined, match: Record<s
     return list.find((item) => matchesValue(item, match));
 };
 
+/** Return all elements in `list` that satisfy the slice discriminator `match`. */
+export const getArraySliceAll = <T>(list: readonly T[] | undefined, match: Record<string, unknown>): T[] => {
+    if (!list) return [];
+    return list.filter((item) => matchesValue(item, match));
+};
+
+/**
+ * Replace all elements matching `match` in `list` with `newItems`.
+ * Each new item has the discriminator values applied via {@link applySliceMatch}
+ * before this call, so this helper only handles the array surgery.
+ */
+export const setArraySliceAll = <T>(list: T[], match: Record<string, unknown>, newItems: T[]): void => {
+    // Remove all existing items that match the discriminator
+    for (let i = list.length - 1; i >= 0; i--) {
+        if (matchesValue(list[i], match)) list.splice(i, 1);
+    }
+    // Append new items
+    list.push(...newItems);
+};
+
 // ---------------------------------------------------------------------------
 // Validation helpers
 //