hydrogen-web/doc/TS-MIGRATION.md
2021-11-30 14:17:51 +00:00

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# Typescript style guide
## Use `type` rather than `interface` for named parameters and POJO return values.
`type` and `interface` can be used somewhat interchangebly used, but let's use `type` to describe data and `interface` to describe (polymorphic) behaviour.
Good examples of data are option objects to have named parameters, and POJO (plain old javascript objects) without any methods, just fields.
Also see [this playground](https://www.typescriptlang.org/play?#code/C4TwDgpgBACghgJwgO2AeTMAlge2QZygF4oBvAKCiqmTgFsIAuKfYBLZAcwG5LqATCABs4IAPzNkAVzoAjCAl4BfcuVCQoAYQAWWIfwzY8hEvCSpDuAlABkZPlQDGOITgTNW7LstWOR+QjMUYHtqKGcCNilHYDcAChxMK3xmIIsk4wBKewcoFRVyPzgArV19KAgAD2AUfkDEYNDqCM9o2IQEjIJmHT0DLvxsijCw-ClIDsSjAkzeEebjEIYAuE5oEgADABJSKeSAOloGJSgsQh29433nVwQlDbnqfKA)