notes

1.5 KB

1. // Cross-compat phase A step 1: the REAL JS mpackdb v1.0.7 writes a db that
2. // the Zig port (compat_driver.zig verify_a / mutate_a) then reads and mutates.
3. //
4. // Setup (mpackdb source + its msgpackr dep live OUTSIDE the repo):
5. // cp -r /media/STORAGE/projects/mpackdb-reference /tmp/mpackdb-run
6. // cd /tmp/mpackdb-run && npm install
7. // Run:
8. // MPACKDB=/tmp/mpackdb-run node write_a.mjs /tmp/compat/users_a
9. import { pathToFileURL } from 'url';
10. const MOD = process.env.MPACKDB || '/tmp/mpackdb-run';
11. const { default: MPackDB } = await import(pathToFileURL(MOD + '/src/MPackDB.js'));
13. const dbfile = process.argv[2];
14. if (!dbfile) throw new Error('usage: write_a.mjs <dbfile>');
16. const db = new MPackDB(dbfile, { primaryKey: '*id', indexes: ['email', '*age'] });
18. const id0 = await db.insert({
19. name: 'Alice Ünicode ✓',
20. email: '[email protected]',
21. age: 30,
22. balance: 1234.56,
23. tags: ['admin', 'staff'],
24. profile: { lang: 'de', theme: null },
25. created: new Date(1721996422123),
26. });
27. const id1 = await db.insert({ name: 'Bob', email: '[email protected]', age: 25, big: 5000000000 });
28. const id2 = await db.insert({ name: 'Carol', email: '[email protected]', age: 35 });
29. const id3 = await db.insert({ name: 'Dave', email: '[email protected]', age: 40 });
30. const id4 = await db.insert({ name: 'Eva Müller', email: '[email protected]', age: 28 });
31. console.log('inserted ids:', id0, id1, id2, id3, id4);
33. const deleted = await db.delete(id2);
34. console.log('deleted id=2 (Carol):', deleted.length, 'record(s)');
36. await db.close();
37. console.log('JS write_a done');