function expectSourceMentions(subpath: string, names: readonly string[]) {

const source = readPluginSdkSource(subpath);

const missing = names.filter((name) => !sourceMentionsIdentifier(source, name));

expect(missing, `${subpath} missing exports`).toEqual([]);

expect(missing, `${subpath} missing exports`).toStrictEqual([]);

}

function expectSourceOmits(subpath: string, names: readonly string[]) {

const source = readPluginSdkSource(subpath);

const present = names.filter((name) => sourceMentionsIdentifier(source, name));

expect(present, `${subpath} leaked exports`).toEqual([]);

expect(present, `${subpath} leaked exports`).toStrictEqual([]);

}

function expectSourceContract(

const source = readPluginSdkSource(subpath);

const missing = (params.mentions ?? []).filter((name) => !sourceMentionsIdentifier(source, name));

const present = (params.omits ?? []).filter((name) => sourceMentionsIdentifier(source, name));

expect(missing, `${subpath} missing exports`).toEqual([]);

expect(present, `${subpath} leaked exports`).toEqual([]);

expect(missing, `${subpath} missing exports`).toStrictEqual([]);

expect(present, `${subpath} leaked exports`).toStrictEqual([]);

}

function expectSourceContains(subpath: string, snippet: string) {

it("keeps removed bundled-channel aliases out of the public sdk list", () => {

const removedChannelAliases = new Set(["signal", "slack", "telegram", "whatsapp"]);

const banned = pluginSdkSubpaths.filter((subpath) => removedChannelAliases.has(subpath));

expect(banned).toEqual([]);

expect(banned).toStrictEqual([]);

});

it("keeps generated bundled-channel facades out of the public sdk list", () => {

isGeneratedBundledFacadeSubpath(subpath),

),

);

expect(banned).toEqual([]);

expect(banned).toStrictEqual([]);

});

it("keeps browser compatibility helper subpaths as thin facades", () => {

)

.toSorted();

expect(violations).toEqual([]);

expect(violations).toStrictEqual([]);

});

it("keeps the deprecated channel-runtime shim unused in repo imports", () => {

"src/plugins/contracts/plugin-sdk-root-alias.test.ts",

],

});

expect(matches).toEqual([]);

expect(matches).toStrictEqual([]);

});

it("keeps deprecated comparable channel target helpers behind compatibility shims", () => {

"src/plugins/contracts/plugin-sdk-subpaths.test.ts",

],

});

expect(matches).toEqual([]);

expect(matches).toStrictEqual([]);

});

it("keeps deprecated channel route key aliases behind compatibility shims", () => {

"src/plugins/contracts/plugin-sdk-subpaths.test.ts",

],

});

expect(matches).toEqual([]);

expect(matches).toStrictEqual([]);

});

it("keeps removed channel-named runtime boundaries out of core imports", () => {

],

excludeFilesMatching: [/\.test\.ts$/u, /\.test-harness\.ts$/u],

});

expect(matches).toEqual([]);

expect(matches).toStrictEqual([]);

});

it("exports channel runtime helpers from the dedicated subpath", () => {