Myroslav Martsin

Signal Forms went stable in Angular 22. They bring FormValueControl, a contract where a custom control hands the form a value and a list of errors. A toggle or a stepper meets it in a few lines. The real test is a control whose input text and model value are two different things. A phone field is such a control. The user types 4155550132. The input shows (415) 555-0132 while the model stores +14155550132. Between the two sit parsing, formatting, and validation per country.

Here is a bug I have shipped more than once. You have an export that turns records into CSV. The column list is just strings: import Papa from 'papaparse'; Papa.unparse(users, { columns: ['id', 'name', 'email'] }); // columns are plain strings Six months later someone renames name to fullName on the User type. The compiler is happy. The tests that do not touch this path are happy. The export keeps running.

Most CSV libraries go one way or skip types. csv-pipe does both, typed, and parses several times faster than papaparse. Live playground in the post.