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import type { Manifest } from "@dispatch/kernel";
import type { CustomField, StatField, SurfaceSpec } from "@dispatch/ui-contract";
/**
* The typed payload of the `rendererId: "table"` custom field (CR-1). Exported
* so a client renderer narrows `CustomField.payload` via this symbol instead of
* a blind `unknown`. Each row aligns cell-for-cell to `columns`.
*/
export interface TablePayload {
readonly columns: readonly string[];
readonly rows: ReadonlyArray<ReadonlyArray<string | number | boolean>>;
}
/** The renderer id clients dispatch on for the extensions table. */
export const TABLE_RENDERER_ID = "table";
/**
* Pure core — builds the SurfaceSpec for the loaded-extensions surface.
* Zero I/O, zero ambient state. Decision logic only: input → output.
*
* Emits a "Loaded" count stat plus ONE `custom`/"table" field enumerating EVERY
* loaded extension (all trust tiers) as real columns (CR-1). A client without a
* "table" renderer gracefully skips the field and still sees the count.
*/
export function buildLoadedExtensionsSpec(manifests: readonly Manifest[]): SurfaceSpec {
const count: StatField = { kind: "stat", label: "Loaded", value: String(manifests.length) };
const payload: TablePayload = {
columns: ["Name", "Version", "Trust", "Activation"],
rows: manifests.map((manifest) => [
manifest.name,
manifest.version,
manifest.trust,
// Activation is optional in the manifest; "eager" is the declared default.
manifest.activation ?? "eager",
]),
};
const table: CustomField = {
kind: "custom",
rendererId: TABLE_RENDERER_ID,
payload,
};
return {
id: "loaded-extensions",
region: "side",
title: "Loaded Extensions",
fields: [count, table],
};
}
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