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Resolve os.homedir() lazily instead of at module load time

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- Move homedir() calls into functions for lazy evaluation
- Add GOOGLE_APPLICATION_CREDENTIALS support for Vertex AI
This commit is contained in:
jhyang 2026-01-09 15:31:24 +08:00
parent 5eb53cdb9e
commit d2882c2643
4 changed files with 54 additions and 6 deletions
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13
packages/ai/src/stream.ts
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@ -26,13 +26,20 @@ import type {
ThinkingLevel,
} from "./types.js";
const VERTEX_ADC_CREDENTIALS_PATH = join(homedir(), ".config", "gcloud", "application_default_credentials.json");
let cachedVertexAdcCredentialsExists: boolean | null = null;
function hasVertexAdcCredentials(): boolean {
if (cachedVertexAdcCredentialsExists === null) {
cachedVertexAdcCredentialsExists = existsSync(VERTEX_ADC_CREDENTIALS_PATH);
// Check GOOGLE_APPLICATION_CREDENTIALS env var first (standard way)
const gacPath = process.env.GOOGLE_APPLICATION_CREDENTIALS;
if (gacPath) {
cachedVertexAdcCredentialsExists = existsSync(gacPath);
} else {
// Fall back to default ADC path (lazy evaluation)
cachedVertexAdcCredentialsExists = existsSync(
join(homedir(), ".config", "gcloud", "application_default_credentials.json"),
);
}
}
return cachedVertexAdcCredentialsExists;
}