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4 changes: 2 additions & 2 deletions packages/vertexai/src/methods/chrome-adapter.test.ts
Original file line number Diff line number Diff line change
Expand Up @@ -82,7 +82,7 @@ describe('ChromeAdapter', () => {
})
).to.be.false;
});
it('returns false if request content has function role', async () => {
it('returns false if request content has non-user role', async () => {
const adapter = new ChromeAdapter(
{
availability: async () => Availability.available
Expand All @@ -93,7 +93,7 @@ describe('ChromeAdapter', () => {
await adapter.isAvailable({
contents: [
{
role: 'function',
role: 'model',
parts: []
}
]
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5 changes: 3 additions & 2 deletions packages/vertexai/src/methods/chrome-adapter.ts
Original file line number Diff line number Diff line change
Expand Up @@ -144,9 +144,10 @@ export class ChromeAdapter {
return false;
}

// Applies the same checks as above, but for each content item.
for (const content of request.contents) {
if (content.role === 'function') {
// Returns false if the request contains multiple roles, eg a chat history.
// TODO: remove this guard once LanguageModelMessage is supported.
if (content.role !== 'user') {
return false;
}
}
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