migrate to "export default"

also, set no-use-before-define in linter

src/blobs.js

@@ -1,38 +1,11 @@
 /* jslint node:true */
 
 import assert from 'node:assert';
-import * as database from './database.js';
+import database from './database.js';
 
 const CERT_PREFIX = 'cert';
 const CERT_SUFFIX = 'cert';
 
-export default {
-    get,
-    getString,
-    set,
-    setString,
-    del,
-
-    listCertIds,
-
-    ACME_ACCOUNT_KEY: 'acme_account_key',
-    ADDON_TURN_SECRET: 'addon_turn_secret',
-
-    // the code relies on sftp_<keytype>_* pattern
-    SFTP_RSA_PUBLIC_KEY: 'sftp_rsa_public_key',
-    SFTP_RSA_PRIVATE_KEY: 'sftp_rsa_private_key',
-    SFTP_ED25519_PUBLIC_KEY: 'sftp_ed25519_public_key',
-    SFTP_ED25519_PRIVATE_KEY: 'sftp_ed25519_private_key',
-
-    PROXY_AUTH_TOKEN_SECRET: 'proxy_auth_token_secret',
-
-    OIDC_KEY_EDDSA: 'oidc_key_eddsa', // this is only JWT private key, the public key will be derived
-    OIDC_KEY_RS256: 'oidc_key_rs256',
-
-    CERT_PREFIX,
-    CERT_SUFFIX,
-    _clear: clear
-};
 
 const BLOBS_FIELDS = [ 'id', 'value' ].join(',');
 
@@ -78,3 +51,31 @@ async function listCertIds() {
     const result = await database.query('SELECT id FROM blobs WHERE id LIKE ?', [ `${CERT_PREFIX}-%.${CERT_SUFFIX}` ]);
     return result.map(r => r.id);
 }
+
+export default {
+    get,
+    getString,
+    set,
+    setString,
+    del,
+
+    listCertIds,
+
+    ACME_ACCOUNT_KEY: 'acme_account_key',
+    ADDON_TURN_SECRET: 'addon_turn_secret',
+
+    // the code relies on sftp_<keytype>_* pattern
+    SFTP_RSA_PUBLIC_KEY: 'sftp_rsa_public_key',
+    SFTP_RSA_PRIVATE_KEY: 'sftp_rsa_private_key',
+    SFTP_ED25519_PUBLIC_KEY: 'sftp_ed25519_public_key',
+    SFTP_ED25519_PRIVATE_KEY: 'sftp_ed25519_private_key',
+
+    PROXY_AUTH_TOKEN_SECRET: 'proxy_auth_token_secret',
+
+    OIDC_KEY_EDDSA: 'oidc_key_eddsa', // this is only JWT private key, the public key will be derived
+    OIDC_KEY_RS256: 'oidc_key_rs256',
+
+    CERT_PREFIX,
+    CERT_SUFFIX,
+    _clear: clear
+};