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SDK Fails with "SdkError: Failed to parse JSON response" on non-200 responses #204

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SDK Fails with "SdkError: Failed to parse JSON response" on non-200 responses#204
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@ohana54

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@ohana54
ohana54
opened on Aug 5, 2025

Hi,

We noticed that sometimes the service returns 500/502 errors and the response body is html.
The code doesn't check the status code and tries to parse the body as json, which fails with the error "SdkError: Failed to parse JSON response".

Context:

fingerprintjs-pro-server-api-node-sdk/src/serverApiClient.ts

Lines 86 to 91 in 0feaf6b

const response = await this.fetch(url, {
method: 'GET',
headers,
})
const jsonResponse = await copyResponseJson(response)

It would be nice to handle these cases so we can get a meaningful and correct error back.
I'll be happy to submit a PR if needed.

Thanks!

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