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function / @typed/fx

RefSubject.hydrate

Creates a named hydrated RefSubject using a string-encoded Schema codec.

Package version
2.0.0-beta.7
Category
Hydration construction
Since
2.0.0
Member of
RefSubject

Import

import { RefSubject } from "@typed/fx";

Access RefSubject.hydrate through the imported RefSubject export. Its declaration below describes the member.

This public exposure is a re-export. Its import path is supported; declaration documentation is shared with the other public exposures below.

Signatures

export declare function hydrate<S extends Schema.Codec<any, string, any, any>, E = never, R = never>(schema: S, effect: HydrationInput<NoInfer<Schema.Schema.Type<S>>, E, R>, options: HydrateOptions<Schema.Schema.Type<S>> & {
    readonly name: string;
}): HydrateEffect<S, E, R>;
export declare function hydrate<S extends Schema.Top, E = never, R = never>(schema: S, effect: HydrationInput<NoInfer<Schema.Schema.Type<S>>, E, R>, options?: HydrateOptions<Schema.Schema.Type<S>> & {
    readonly name?: undefined;
}): HydrateEffect<S, E, R>;

Why

Creates state whose server value is Schema-encoded and whose browser value is Schema-decoded before the initializer resumes.

Ownership and lifetime

The creation Effect requires Scope; that Scope owns initializer subscriptions and deferred server/client coordination. Schema errors and codec services remain typed.

Values, Effects, Effect Streams, and Fx are accepted as initializers. A named string codec uses its own data-* attribute; unnamed values share the versioned data-typed-refsubject envelope. See {@link https://effect.website/docs/schema/introduction/ Effect Schema} for the codec and service model used by this boundary.

Synchronous configuration errors

Supplying an empty name, the reserved typed-refsubject name, or a name containing characters forbidden in an HTML attribute throws TypeError immediately while hydrate is called. These programmer errors are outside the returned Effect’s typed error channel. Schema decoding and encoding failures remain Schema.SchemaError, and codec requirements remain typed services.

Examples

import { Effect, Schema } from "effect"
import * as Hydration from "@typed/fx/RefSubject"
import { RefSubject } from "@typed/fx"

const attributes = Effect.scoped(Effect.gen(function* () {
  const count = yield* Hydration.hydrate(Schema.FiniteFromString, 0, { name: "count" })
  yield* RefSubject.update(count, (value) => value + 1)
  return yield* count[Hydration.HydrationRefTypeId].toAttributes
}))

Other public imports

These import paths expose the same declaration. Each page retains its own public name and signature.

Source