@expressive/react/dist/esm/adapter.js

Use classes to define state in React!

// src/model.as.ts
import { Model } from "@expressive/mvc";
import { createProvider } from "./context";
Model.as = function(render) {
  if (this === Model)
    throw new Error("Cannot create component from base Model.");
  const Component = (props) => {
    const local = this.use((self) => {
      self.set(props);
      if (props.is)
        return props.is(self);
    });
    local.set(props);
    return createProvider(
      local,
      render(props, local),
      props.fallback || local.fallback,
      String(local)
    );
  };
  Component.Model = this;
  Component.displayName = this.name;
  return Component;
};

// src/model.use.ts
import { Model as Model2, Context, createEffect } from "@expressive/mvc";
import { Pragma } from "./adapter";
Model2.use = function(argument, repeat) {
  const context = Context.use(true);
  const render = Pragma.useFactory((refresh) => {
    let ready;
    let local;
    const instance = new this(argument);
    context.include(instance);
    const unwatch = createEffect(instance, (current) => {
      local = current;
      if (ready)
        refresh();
    });
    function didMount() {
      ready = true;
      return () => {
        unwatch();
        context.pop();
        instance.set(null);
      };
    }
    return (props) => {
      Pragma.useLifecycle(didMount);
      if (ready && repeat && props) {
        ready = false;
        if (typeof props == "function") {
          props.call(instance, instance);
          props = void 0;
        }
        const update = instance.set(props);
        if (update)
          update.then(() => ready = true);
        else
          ready = true;
      }
      return local;
    };
  });
  return render(argument);
};

// src/model.get.ts
import { createEffect as createEffect2, Model as Model3 } from "@expressive/mvc";
import { Pragma as Pragma2 } from "./adapter";
Model3.get = function(argument) {
  const context = Pragma2.useContext();
  const render = Pragma2.useFactory((refresh) => {
    const instance = context.get(this);
    if (!instance)
      if (argument === false)
        return () => void 0;
      else
        throw new Error(`Could not find ${this} in context.`);
    let ready;
    let value;
    const unwatch = createEffect2(instance, (current) => {
      if (typeof argument === "function") {
        const next = argument.call(current, current, update);
        if (next === value)
          return;
        value = next;
      } else
        value = current;
      if (ready)
        refresh();
    }, argument === true);
    if (value instanceof Promise) {
      let error;
      unwatch();
      value.then((x) => value = x, (e) => error = e).finally(refresh);
      value = null;
      return () => {
        if (error)
          throw error;
        return value === void 0 ? null : value;
      };
    }
    if (value === null) {
      unwatch();
      return () => null;
    }
    ;
    function update(action) {
      if (typeof action == "function")
        action = action();
      refresh();
      if (action)
        return action.finally(refresh);
    }
    function didMount() {
      ready = true;
      return unwatch;
    }
    return () => {
      Pragma2.useLifecycle(didMount);
      return value === void 0 ? null : value;
    };
  });
  return render();
};

// src/adapter.ts
var Pragma3 = {};
export {
  Pragma3 as Pragma
};
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