fix: harden automatic mobile boards

packages/db/test/schema.spec.ts

@@ -11,6 +11,9 @@ import * as mysqlSchema from "../schema/mysql";
 import * as postgresqlSchema from "../schema/postgresql";
 import * as sqliteSchema from "../schema/sqlite";
 
+const mysqlTables = { ...mysqlSchema };
+const postgresqlTables = { ...postgresqlSchema };
+
 // We need the following three types as there is currently no support for Buffer in mysql & pg and
 // so we use a custom type which results in the config beeing different
 type FixedMysqlConfig = {
@@ -63,7 +66,7 @@ test("schemas should match", () => {
       if (!("uniqueName" in sqliteColumn)) return;
       if (!("primary" in sqliteColumn)) return;
 
-      const mysqlTable = mysqlSchema[tableName];
+      const mysqlTable = mysqlTables[tableName];
 
       const mysqlColumn = mysqlTable[columnName as keyof typeof mysqlTable] as object;
       if (!("isUnique" in mysqlColumn)) return;
@@ -84,7 +87,7 @@ test("schemas should match", () => {
       ).toEqual(mysqlColumn.primary);
     });
 
-    const mysqlTable = mysqlSchema[tableName];
+    const mysqlTable = mysqlTables[tableName];
     const sqliteForeignKeys = sqliteTable[Symbol.for("drizzle:SQLiteInlineForeignKeys") as keyof typeof sqliteTable] as
       | SqliteForeignKey[]
       | undefined;
@@ -144,7 +147,7 @@ test("schemas should match for postgresql", () => {
   objectEntries(sqliteSchema).forEach(([tableName, sqliteTable]) => {
     // keys of sqliteSchema and postgresqlSchema are the same, so we can safely use tableName as key
     // skipcq: JS-E1007
-    const postgresqlTable = postgresqlSchema[tableName];
+    const postgresqlTable = postgresqlTables[tableName];
     Object.entries(sqliteTable).forEach(([columnName, sqliteColumn]: [string, object]) => {
       if (!("isUnique" in sqliteColumn)) return;
       if (!("uniqueName" in sqliteColumn)) return;