Function isJSONDecodeError

internal/client/api_errors.go:116–134

isJSONDecodeError reports whether err is a JSON decode failure at the SDK boundary, matching both typed json errors and their fmt.Errorf- wrapped substring form. io.EOF is intentionally excluded — at the SDK boundary an EOF is a transport failure, not a payload-shape failure.

(err error)

// wrapped substring form. io.EOF is intentionally excluded — at the SDK
// boundary an EOF is a transport failure, not a payload-shape failure.
func isJSONDecodeError(err error) bool {
	var syntaxErr *json.SyntaxError
	var unmarshalTypeErr *json.UnmarshalTypeError
	if errors.As(err, &syntaxErr) || errors.As(err, &unmarshalTypeErr) {
		return true
	}

	// Substring fallback for fmt.Errorf-wrapped json decode errors that no
	// longer satisfy errors.As against the typed json errors. "invalid
	// character" alone is too broad (other libraries surface it for non-
	// JSON failures), so it is gated on the message also containing "json".
	msg := err.Error()
	if strings.Contains(msg, "unexpected end of JSON input") ||
		strings.Contains(msg, "cannot unmarshal") {
		return true
	}
	lower := strings.ToLower(msg)
	return strings.Contains(lower, "invalid character") && strings.Contains(lower, "json")
}