release: WRNexusJS 0.4.0

packages/native/src/index.ts

@@ -22,3 +22,14 @@ export { browserCapabilities } from "./browser.ts";
 export { mobileCapabilities } from "./mobile.ts";
 
 export const native = { isMobile, platform, register, registered, run, supports };
+export {
+  defineNativeManifest,
+  inspectNativeCapabilities,
+  missingNativeCapabilities,
+  PermissionManager,
+} from "./manifest.ts";
+export type {
+  NativeCapabilityManifestEntry,
+  NativeCapabilityManifest,
+  PermissionAdapter,
+} from "./manifest.ts";

packages/native/src/manifest.ts

@@ -0,0 +1,58 @@
+import { registered, supports } from "./registry.ts";
+import type { NativeTarget } from "./types.ts";
+export interface NativeCapabilityManifestEntry {
+  name: string;
+  description?: string;
+  permissions?: string[];
+  targets?: NativeTarget[];
+  optional?: boolean;
+}
+export interface NativeCapabilityManifest {
+  name: string;
+  version?: string;
+  capabilities: NativeCapabilityManifestEntry[];
+}
+export function defineNativeManifest<T extends NativeCapabilityManifest>(manifest: T): T {
+  const names = new Set<string>();
+  for (const capability of manifest.capabilities) {
+    if (!/^[A-Za-z][A-Za-z0-9.-]*$/.test(capability.name))
+      throw new TypeError(`Invalid native capability: ${capability.name}`);
+    if (names.has(capability.name))
+      throw new Error(`Duplicate native capability: ${capability.name}`);
+    names.add(capability.name);
+  }
+  return manifest;
+}
+export function inspectNativeCapabilities(
+  target?: NativeTarget,
+): Array<{ name: string; supported: boolean }> {
+  return registered().map((name) => ({ name, supported: supports(name, target) }));
+}
+export function missingNativeCapabilities(
+  manifest: NativeCapabilityManifest,
+  target?: NativeTarget,
+): NativeCapabilityManifestEntry[] {
+  return manifest.capabilities.filter(
+    (capability) =>
+      !capability.optional &&
+      (!capability.targets || !target || capability.targets.includes(target)) &&
+      !supports(capability.name, target),
+  );
+}
+export interface PermissionAdapter {
+  query(name: string): Promise<"granted" | "denied" | "prompt" | "unavailable">;
+  request?(name: string): Promise<"granted" | "denied">;
+}
+export class PermissionManager {
+  constructor(private readonly adapter: PermissionAdapter) {}
+  query(name: string) {
+    return this.adapter.query(name);
+  }
+  async ensure(name: string): Promise<boolean> {
+    const state = await this.adapter.query(name);
+    if (state === "granted") return true;
+    if (state === "prompt" && this.adapter.request)
+      return (await this.adapter.request(name)) === "granted";
+    return false;
+  }
+}