Field validation functions currently do not type their `value` arg. This
is because the underlying `FieldBase` type breaks the type inferences
for these functions. The fix is to `Omit` the `validate` property from
this type before overriding it with our own, typed version for each
field.
Here's an example of the problem:
<img width="373" alt="Screenshot 2024-09-16 at 2 50 10 PM"
src="https://github.com/user-attachments/assets/a99e32fb-5645-4df6-82f2-0efab26b9831">
Here's an example of the fix:
<img width="363" alt="Screenshot 2024-09-16 at 3 59 42 PM"
src="https://github.com/user-attachments/assets/f83909bc-2169-4378-b5a7-5cca78b6ad64">
This PR also fixes the `hasMany` type inferences (shown above), where
the `value` type changes to an array when this property is set. Here's a
minimal example of the solution:
```ts
export type NumberField = {
type: 'number'
} & (
| {
hasMany: true
validate?: Validate<number[], unknown, unknown, NumberField>
}
| {
hasMany?: false | undefined
validate?: Validate<number, unknown, unknown, NumberField>
}
)
```
```ts
{
type: 'text',
validate: (value) => '' // value is `string`
},
{
type: 'text',
hasMany: true,
validate: (value) => '' // value is `string[]`
}
```
Disclaimer: in order for these types to properly infer their values,
`strictNullChecks: true` must be set in your `tsconfig.json`. This is
_not_ currently set in the Payload Monorepo, but consuming apps _should_
have this defined in order properly infer these types.
This PR also adds stronger types for misc. untyped values such as the
`point` field, etc.
Now enforcing curly brackets on all if statements. Includes auto-fixer.
```ts
// ❌ Bad
if (foo) foo++;
// ✅ Good
if (foo) {
foo++;
}
```
Note: this did not lint the `drizzle` package or any `db-*` packages.
This will be done in the future.
## Description
Threads the field config to all "field subcomponents" through props,
i.e. field label, description, error, etc. This way, the field config
that controls any particular component is easily accessible and strongly
typed, i.e. `props.field.maxLength`. This is true for both server and
client components, whose server-side props are now also contextually
typed. This behavior was temporarily removed in #7474 due to bloating
HTML, but has since been resolved in #7620. This PR also makes
significant improvements to component types by exporting explicit types
for _every component of every field_, each with its own client/server
variation. Now, a custom component can look something like this:
```tsx
import type { TextFieldLabelServerComponent } from 'payload'
import React from 'react'
export const CustomLabel: TextFieldLabelServerComponent = (props) => {
return (
<div>{`The max length of this field is: ${props?.field?.maxLength}`}</div>
)
}
```
The following types are now available:
```ts
import type {
TextFieldClientComponent,
TextFieldServerComponent,
TextFieldLabelClientComponent,
TextFieldLabelServerComponent,
TextFieldDescriptionClientComponent,
TextFieldDescriptionServerComponent,
TextFieldErrorClientComponent,
TextFieldErrorServerComponent,
// ...and so one for each field
} from 'payload'
```
BREAKING CHANGES:
In order to strictly type these components, a few breaking changes have
been made _solely to type definitions_. This only effects you if you are
heavily using custom components.
Old
```ts
import type { ErrorComponent, LabelComponent, DescriptionComponent } from 'payload'
```
New:
```ts
import type {
FieldErrorClientComponent,
FieldErrorServerComponent,
FieldLabelClientComponent,
FieldLabelServerComponent,
FieldDescriptionClientComponent,
FieldDescriptionServerComponent,
// Note: these are the generic, underlying types of the more stricter types described above ^
// For example, you should use the type that is explicit for your particular field and environment
// i.e. `TextFieldLabelClientComponent` and not simply `FieldLabelClientComponent`
} from 'payload'
```
- [x] I have read and understand the
[CONTRIBUTING.md](https://github.com/payloadcms/payload/blob/main/CONTRIBUTING.md)
document in this repository.
## Type of change
- [x] Bug fix (non-breaking change which fixes an issue)
## Checklist:
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] Existing test suite passes locally with my changes
