ivue

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Extensible Kernel ​

This is a working toast application. Its Sticky Plugin is enabled on load, so the first toast stays visible. Turn Sticky Plugin off to restore its eight-second auto-dismiss countdown. Turn Activity Plugin on to send each new toast's SHOW event into the event stream.

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How it works ​

A plugin system often brings a dependency injection container, decorators, tokens, hierarchical injectors, and lifecycle wiring. This kernel is one compact module singleton because the class graph already carries the relationships it needs.

The central idea is that construction binds to a namespaced class key. The key follows the form namespace/Class, where the namespace owns the class. The core application therefore defines core/Notification. An activity plugin from another vendor still registers against core/Notification because it extends the core application's class.

At boot, the kernel seals the graph — it composes every plugin and re-parents each extends chain. After sealing, new Notification.Class() produces the fully extended class with super, reactive state, and child inheritance intact. Construction reads a live namespace binding, so the call site performs no registry lookup. Plugin dispatch adds no steady-state layer: after boot, method calls follow the native prototype chain.

Sticky Plugin replaces the ordinary toast lifetime: each toast gets a gold accent and remains visible until the user dismisses it. Activity Plugin records every show() call in a separate event stream without changing the toast UI. ErrorNotification inherits both plugins even though its class is declared before they register.

Why this is much smaller and removes Angular-style runtime resolution ​

Angular-style DI builds and resolves a second runtime graph: tokens choose providers, scopes choose lifetimes, and factories mediate construction.

ivue uses the graph JavaScript already has. Modules hold references, prototypes hold inheritance, and a namespace's live Class binding selects the implementation. The kernel seals that graph once at boot; afterward, construction is a live binding plus native new. No container participates.

That is the reduction: compose once, then disappear. Contextual providers, request scopes, and runtime service selection still require DI machinery. When the module and prototype graphs already express the relationship, they do not.

What a plugin toggle does ​

Sealing changes subsequent construction; it does not mutate the class of an existing object. The live example makes a plugin change through a coarse reboot:

  1. Capture the kind, message, and stable UI id of each visible toast.
  2. Clear plugin registrations and register the enabled set.
  3. Seal the class graph and replace each namespace's Class binding.
  4. Construct replacement toast instances from the captured data.
  5. Swap the visible list to those replacements.

The cards appear to change in place because their UI ids and data survive. Their object identities do not. Production follows the same lifecycle: register once, seal once, mount; a plugin configuration change reconstructs the affected runtime state.

The whole kernel ​

This is the complete registry:

ts
// kernel.ts — the complete extensible-class registry, with no DI container.
//
// A class opts in with kernel.defineClass('core/Name', Namespace); plugins
// extend it with kernel.registerClass('core/Name', Base => class extends Base
// {}); at boot
// kernel.sealClassGraph() composes every plugin and re-parents every
// extends-chain in topological order, so `new X.Class()` — read live off the
// namespace, zero lookup — always produces the fully-extended class, super
// chains intact. The dependency graph is DISCOVERED from the real prototype
// hierarchy (getClassGraph), never hand-declared.
import { Reactive } from '../../ivue';

type AnyClass = new (...args: any[]) => any;
export interface Extensible {
  $Class: AnyClass; // raw base — children/plugins extend this
  Class: AnyClass; // live binding — what you `new`; the kernel rewrites it
}
interface Node {
  name: string;
  ns: Extensible;
  parentClass?: AnyClass; // captured at define time, before any re-parenting
  makes: ((Base: AnyClass) => AnyClass)[];
  plugins: string[];
}

const nodes = new Map<string, Node>();
const nodeByClass = () => {
  const map = new Map<AnyClass, Node>();
  for (const node of nodes.values()) map.set(node.ns.$Class, node);
  return map;
};

export const kernel = {
  /** Register an owner-namespaced key (`namespace/Class`) and namespace. */
  defineClass(name: string, ns: Extensible) {
    const parentClass = Object.getPrototypeOf(ns.$Class.prototype)?.constructor;
    nodes.set(name, {
      name,
      ns,
      parentClass: parentClass === Object ? undefined : parentClass,
      makes: [],
      plugins: [],
    });
  },

  /** A plugin extends a class by name. Composition is deferred to seal. */
  registerClass(
    name: string,
    make: (Base: AnyClass) => AnyClass,
    plugin = 'plugin',
  ) {
    const node = nodes.get(name);
    if (!node) throw new Error(`kernel: '${name}' is not defined`);
    node.makes.push(make);
    node.plugins.push(plugin);
  },

  /** Clear every plugin registration — back to the base classes. */
  reset() {
    for (const node of nodes.values()) {
      node.makes = [];
      node.plugins = [];
    }
  },

  /** Boot: finalize the class graph. Re-parents each extends-chain onto its
   *  now-composed base (topological order) and stacks each node's plugins. */
  sealClassGraph() {
    const byClass = nodeByClass();
    for (const node of topoOrder(byClass)) {
      const raw = node.ns.$Class;
      const parent = node.parentClass && byClass.get(node.parentClass);
      if (parent) {
        // splice the composed parent under this class's raw prototype
        Object.setPrototypeOf(raw.prototype, parent.ns.Class.prototype);
        Object.setPrototypeOf(raw, parent.ns.Class);
      }
      let cls: AnyClass = raw;
      for (const make of node.makes) cls = make(cls); // stack plugins
      node.ns.Class = Reactive(cls) as AnyClass; // the live binding
    }
  },

  /** Introspection — the tracked graph, discovered from the hierarchy. */
  getClassGraph() {
    const byClass = nodeByClass();
    return [...nodes.values()].map((node) => ({
      name: node.name,
      extends: node.parentClass
        ? (byClass.get(node.parentClass)?.name ?? null)
        : null,
      plugins: [...node.plugins],
    }));
  },
};

function topoOrder(byClass: Map<AnyClass, Node>): Node[] {
  const out: Node[] = [];
  const seen = new Set<string>();
  const visit = (node: Node) => {
    if (seen.has(node.name)) return;
    seen.add(node.name);
    const parent = node.parentClass && byClass.get(node.parentClass);
    if (parent) visit(parent);
    out.push(node);
  };
  for (const node of nodes.values()) visit(node);
  return out;
}

Opting in with an owner key ​

An extensible class is an ordinary ivue class with two additions. Class is a let binding that the kernel can rewrite, and kernel.defineClass() associates the namespace with its owner key. Call sites keep the ordinary ivue forms: new Notification.Class(...) and extends Notification.$Class.

ts
// Notification.ts — an app class opted into the kernel. The class key includes
// its owner namespace: plugins extending this class target `core/Notification`
// no matter which vendor supplies the plugin.
import { ref } from 'vue';
import { Reactive } from '../../ivue';
import { kernel } from './kernel';

export class $Notification {
  constructor(
    public message: string,
    public reportActivity: (event: string) => void,
  ) {}

  get isDismissed() {
    return ref(false);
  }
  get remainingSeconds() {
    return ref(8);
  }

  // Derived extension points stay plain so plugins can refine through super.
  get kind() {
    return 'Notification';
  }
  get icon() {
    return 'i';
  }
  get accent() {
    return '#6366f1';
  }
  get isPinned() {
    return false;
  }
  get lifetimeLabel() {
    return `Auto-dismisses in ${this.remainingSeconds.value}s`;
  }
  get lifetimeWidth() {
    return (this.remainingSeconds.value / 8) * 100 + '%';
  }
  get shouldShowCountdown() {
    return !this.isPinned;
  }

  show() {
    this.isDismissed.value = false;
    this.remainingSeconds.value = 8;
  }

  dismiss() {
    this.isDismissed.value = true;
  }

  tick() {
    if (this.isDismissed.value) return;
    this.remainingSeconds.value--;
    if (this.remainingSeconds.value <= 0) this.dismiss();
  }
}

export namespace Notification {
  export const $Class = $Notification; // raw — children/plugins extend this
  export let Class = Reactive($Class); // live binding — you `new` this
  export type Instance = typeof Class.Instance; // expose & reactive() interop
}

kernel.defineClass('core/Notification', Notification);

The key names the class owner, not the plugin. A vendor defining its own class might use acme-audit/AuditPanel. When that vendor extends the core notification class, it targets core/Notification.

Plugins add concrete behavior ​

Each plugin extends the class it receives. Sticky Plugin refines plain getters to pin and restyle notifications, then overrides tick() to disable auto-dismiss. Activity Plugin overrides show(), delegates through super, and sends the event to the example's reactive event stream. Sealing stacks both classes in registration order.

ts
// plugins.ts — vendor code. A vendor's own classes use its namespace, such as
// `acme-audit/AuditPanel`; a plugin extending a core class targets the core
// owner's key, `core/Notification`.
import { $Notification } from './Notification';

export type NotificationPlugin = (
  Base: typeof $Notification,
) => typeof $Notification;

export const activityPlugin: NotificationPlugin = (Base) =>
  class extends Base {
    show() {
      super.show();
      this.reportActivity(`SHOW · ${this.kind} · ${this.message}`);
    }
  };

export const stickyPlugin: NotificationPlugin = (Base) =>
  class extends Base {
    get accent() {
      return '#f59e0b';
    }
    get isPinned() {
      return true;
    }
    get lifetimeLabel() {
      return 'Pinned until dismissed';
    }

    tick() {
      // Sticky Plugin replaces auto-dismiss: the countdown intentionally stops.
    }
  };

ErrorNotification extends Notification.$Class. A subclass normally keeps the parent it received at declaration time. During sealClassGraph(), the kernel discovers that relationship from the real prototype hierarchy and re-parents ErrorNotification onto the composed Notification class. JavaScript's dynamic super lookup then follows the sealed chain.

What to notice ​

  • new Notification.Class() performs no lookup. It reads the live namespace binding. After boot, construction follows the same class every time.
  • Each plugin has one visible responsibility. Sticky Plugin changes the accent and replaces auto-dismiss with a pinned lifetime. Activity Plugin records each show() call in the event stream.
  • The child follows the base class. ErrorNotification receives both plugins through the re-parented inheritance chain.
  • kernel.getClassGraph() exposes metadata. The panel displays the graph discovered from inheritance. Runtime construction never consults it.
  • A toggle reconstructs visible instances. Production registers once, seals once, and restarts after a plugin change, like reloading an editor window after enabling an extension.

The source ​

ts
// ErrorNotification.ts — declared before plugins load. At seal, the kernel
// re-parents it onto the composed Notification class, so it inherits every
// plugin registered for `core/Notification`.
import { Reactive } from '../../ivue';
import { kernel } from './kernel';
import { Notification } from './Notification';

class $ErrorNotification extends Notification.$Class {
  get kind() {
    return 'Error notification';
  }
  get icon() {
    return '!';
  }
  get accent() {
    return '#ef4444';
  }
}

export namespace ErrorNotification {
  export const $Class = $ErrorNotification; // raw — children/plugins extend this
  export let Class = Reactive($Class); // live binding — you `new` this
  export type Instance = typeof Class.Instance; // expose & reactive() interop
}

kernel.defineClass('core/ErrorNotification', ErrorNotification);
ts
// ExtensibleKernelExample.ts — each plugin toggle performs the production boot flow:
// reset registrations, register active plugins, seal the class graph, then
// reconstruct the visible notifications.
import { onUnmounted, ref, shallowRef } from 'vue';
import { Reactive } from '../../ivue';
import { ErrorNotification } from './ErrorNotification';
import { kernel } from './kernel';
import { Notification } from './Notification';
import {
  activityPlugin,
  stickyPlugin,
  type NotificationPlugin,
} from './plugins';

type NotificationKind = 'notification' | 'error';
type NotificationInstance = InstanceType<typeof Notification.Class>;
interface NotificationEntry {
  id: number;
  kind: NotificationKind;
  notification: NotificationInstance;
}
interface PluginEntry {
  id: string;
  label: string;
  description: string;
  enabledEffect: string;
  make: NotificationPlugin;
}
interface GraphNode {
  name: string;
  extends: string | null;
  plugins: string[];
}

class $ExtensibleKernelExample {
  constructor() {
    this.reboot();
    this.addNotification('notification');
    const countdownTimer = window.setInterval(() => this.tick(), 1000);
    onUnmounted(() => window.clearInterval(countdownTimer));
  }

  get notifications() {
    return shallowRef<NotificationEntry[]>([]);
  }
  get activePlugins() {
    return ref<Record<string, boolean>>({ activity: false, sticky: true });
  }
  get graph() {
    return shallowRef<GraphNode[]>([]);
  }
  get nextNotificationId() {
    return ref(0);
  }
  get activityLog() {
    return ref<string[]>([]);
  }

  plugins: PluginEntry[] = [
    {
      id: 'sticky',
      label: 'Sticky Plugin',
      description: 'Keeps toasts visible until they are dismissed.',
      enabledEffect: 'Gold accent · pinned · auto-dismiss disabled',
      make: stickyPlugin,
    },
    {
      id: 'activity',
      label: 'Activity Plugin',
      description: 'Observes toast delivery without changing the toast UI.',
      enabledEffect: 'Every SHOW appears in the event stream',
      make: activityPlugin,
    },
  ];

  get visibleNotifications() {
    return this.notifications.value.filter(
      (entry) => !entry.notification.isDismissed.value,
    );
  }
  get hasVisibleNotifications() {
    return this.visibleNotifications.length > 0;
  }
  get hasActivityEvents() {
    return this.activityLog.value.length > 0;
  }
  get isActivityActive() {
    return this.isPluginActive('activity');
  }

  isPluginActive(pluginId: string) {
    return Boolean(this.activePlugins.value[pluginId]);
  }

  pluginState(pluginId: string) {
    return this.isPluginActive(pluginId) ? 'ON' : 'OFF';
  }

  graphNodeHasParent(node: GraphNode) {
    return node.extends !== null;
  }

  graphNodeHasPlugins(node: GraphNode) {
    return node.plugins.length > 0;
  }

  /** Register, seal, and reconstruct: the whole boot sequence. */
  reboot() {
    const visibleNotifications = this.visibleNotifications;
    kernel.reset();
    this.activityLog.value = [];
    for (const plugin of this.plugins) {
      if (this.isPluginActive(plugin.id)) {
        kernel.registerClass('core/Notification', plugin.make, plugin.label);
      }
    }
    kernel.sealClassGraph();
    this.graph.value = kernel.getClassGraph();
    this.notifications.value = visibleNotifications.map((entry) =>
      this.buildNotification(entry.kind, entry.notification.message, entry.id),
    );
  }

  togglePlugin(pluginId: string) {
    this.activePlugins.value = {
      ...this.activePlugins.value,
      [pluginId]: !this.activePlugins.value[pluginId],
    };
    this.reboot();
  }

  buildNotification(
    kind: NotificationKind,
    message: string,
    id = ++this.nextNotificationId.value,
  ): NotificationEntry {
    const notification =
      kind === 'error'
        ? new ErrorNotification.Class(message, this.recordActivity)
        : new Notification.Class(message, this.recordActivity);
    notification.show();
    return { id, kind, notification };
  }

  addNotification(kind: NotificationKind) {
    const message =
      kind === 'error'
        ? 'Upload failed — retry the request.'
        : 'Draft saved to the cloud.';
    this.notifications.value = [
      ...this.notifications.value,
      this.buildNotification(kind, message),
    ];
  }

  tick() {
    for (const entry of this.notifications.value) entry.notification.tick();
    this.notifications.value = this.visibleNotifications;
  }

  dismissNotification(entry: NotificationEntry) {
    entry.notification.dismiss();
    this.notifications.value = this.visibleNotifications;
  }

  recordActivity(event: string) {
    this.activityLog.value = [...this.activityLog.value, event];
  }
}

export namespace ExtensibleKernelExample {
  export const $Class = $ExtensibleKernelExample; // raw — children `extends` this
  export let Class = Reactive($Class); // reactive — you `new` this
  export type Instance = typeof Class.Instance; // expose & reactive() interop
}
vue
<script setup lang="ts">
import { ExtensibleKernelExample } from './ExtensibleKernelExample';

const example = new ExtensibleKernelExample.Class();

const {
  // state refs
  activityLog,
  graph,
} = example;
</script>

<template>
  <div class="pane pane-wide">
    <section aria-labelledby="toast-heading">
      <div class="kx-demo-head">
        <div>
          <span class="kx-eyebrow">Live application</span>
          <h2 id="toast-heading">Toast playground</h2>
        </div>
        <div class="row kx-actions">
          <button
            class="btn primary"
            type="button"
            @click="example.addNotification('notification')"
          >
            Show saved toast
          </button>
          <button
            class="btn"
            type="button"
            @click="example.addNotification('error')"
          >
            Show error toast
          </button>
        </div>
      </div>

      <div class="kx-app-stage">
        <div class="kx-app-chrome">
          <span></span><span></span><span></span>
          <strong>Acme workspace</strong>
        </div>
        <div class="kx-app-canvas">
          <div class="kx-page-copy">
            <span></span><span></span><span></span>
          </div>

          <div class="kx-toast-region" aria-live="polite">
            <article
              v-for="entry in example.visibleNotifications"
              :key="entry.id"
              class="kx-toast"
              :style="{ '--toast-accent': entry.notification.accent }"
            >
              <div class="kx-toast__icon">{{ entry.notification.icon }}</div>
              <div class="kx-toast__body">
                <div class="kx-toast__title-row">
                  <strong>{{ entry.notification.kind }}</strong>
                  <span v-if="entry.notification.isPinned" class="kx-pin">
                    Sticky Plugin · pinned
                  </span>
                </div>
                <p>{{ entry.notification.message }}</p>
                <div class="kx-toast__lifetime">
                  <span>{{ entry.notification.lifetimeLabel }}</span>
                  <span v-if="example.isActivityActive" class="kx-tracked">
                    Activity Plugin recorded SHOW
                  </span>
                </div>
                <div
                  v-if="entry.notification.shouldShowCountdown"
                  class="kx-progress"
                  aria-hidden="true"
                >
                  <span
                    :style="{ width: entry.notification.lifetimeWidth }"
                  ></span>
                </div>
              </div>
              <button
                class="kx-toast__dismiss"
                type="button"
                aria-label="Dismiss toast"
                @click="example.dismissNotification(entry)"
              >
                ×
              </button>
            </article>

            <div v-if="!example.hasVisibleNotifications" class="kx-empty">
              No active toasts. Trigger one above.
            </div>
          </div>
        </div>
      </div>
    </section>

    <section class="kx-modifiers" aria-labelledby="plugin-heading">
      <div class="kx-modifiers__head">
        <div>
          <span class="kx-eyebrow">Kernel controls</span>
          <h3 id="plugin-heading">Enable plugins for every toast class</h3>
        </div>
        <p>Toggle a plugin and watch the live toasts above change immediately.</p>
      </div>

      <div class="kx-plugin-grid">
        <button
          v-for="plugin in example.plugins"
          :key="plugin.id"
          type="button"
          class="kx-plugin"
          :class="{ 'kx-plugin--active': example.isPluginActive(plugin.id) }"
          :aria-pressed="example.isPluginActive(plugin.id)"
          @click="example.togglePlugin(plugin.id)"
        >
          <span class="kx-plugin__top">
            <strong>{{ plugin.label }}</strong>
            <span class="kx-switch">{{ example.pluginState(plugin.id) }}</span>
          </span>
          <span class="kx-plugin__description">{{ plugin.description }}</span>
          <span class="kx-plugin__effect">
            <span v-if="example.isPluginActive(plugin.id)">Applied now:</span>
            <span v-else>When enabled:</span>
            {{ plugin.enabledEffect }}
          </span>
        </button>
      </div>
    </section>

    <section class="kx-output" aria-labelledby="activity-heading">
      <div class="kx-output__head">
        <div>
          <span class="kx-output__label">Activity Plugin output</span>
          <h3 id="activity-heading">SHOW event stream</h3>
        </div>
        <span
          class="kx-output__state"
          :class="{ 'kx-output__state--active': example.isActivityActive }"
        >
          Activity Plugin {{ example.pluginState('activity') }}
        </span>
      </div>
      <ol v-if="example.hasActivityEvents" class="kx-events mono">
        <li v-for="(event, eventIndex) in activityLog" :key="eventIndex">
          {{ event }}
        </li>
      </ol>
      <p v-else class="kx-output__empty mono">
        No events. Enable Activity Plugin, then show a toast.
      </p>
    </section>

    <details class="kx-under-hood">
      <summary>Under the hood: sealed class graph</summary>
      <div class="kx-graph">
        <div v-for="node in graph" :key="node.name" class="kx-graph__row mono">
          <strong>{{ node.name }}</strong>
          <span v-if="example.graphNodeHasParent(node)" class="kx-graph__dim">
            extends {{ node.extends }}
          </span>
          <span v-if="example.graphNodeHasPlugins(node)" class="kx-graph__plugins">
            ◂ {{ node.plugins.join(' ◂ ') }}
          </span>
        </div>
      </div>
    </details>
  </div>
</template>

<style scoped src="../example-pane.css"></style>

<style scoped>
.pane-wide {
  max-width: 800px;
}
.kx-demo-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}
.kx-demo-head h2,
.kx-modifiers h3 {
  margin: 3px 0 0;
  color: var(--vp-c-text-1);
}
.kx-demo-head h2 {
  font-size: 21px;
}
.kx-intro {
  margin-bottom: 24px;
}
.kx-eyebrow,
.kx-output__label {
  color: #818cf8;
  font-size: 10.5px;
  font-weight: 750;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}
.kx-intro h2,
.kx-step h3,
.kx-output h3 {
  margin: 0;
  color: var(--vp-c-text-1);
}
.kx-intro h2 {
  margin-top: 4px;
  font-size: 21px;
}
.kx-intro p,
.kx-step p {
  margin: 5px 0 0;
  color: #8b95b5;
  font-size: 12.5px;
  line-height: 1.55;
}
.kx-section + .kx-section {
  margin-top: 25px;
}
.kx-step {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  margin-bottom: 12px;
}
.kx-step > span {
  display: grid;
  width: 25px;
  height: 25px;
  flex: 0 0 25px;
  place-items: center;
  border-radius: 7px;
  background: rgba(99, 102, 241, 0.18);
  color: #a5b4fc;
  font-size: 12px;
  font-weight: 800;
}
.kx-step h3,
.kx-output h3 {
  font-size: 14px;
}
.kx-plugin-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.kx-plugin {
  padding: 13px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.025);
  color: inherit;
  text-align: left;
  cursor: pointer;
}
.kx-plugin:hover {
  border-color: rgba(129, 140, 248, 0.6);
}
.kx-plugin--active {
  border-color: #6366f1;
  background: rgba(99, 102, 241, 0.1);
  box-shadow: inset 0 0 0 1px rgba(99, 102, 241, 0.16);
}
.kx-plugin__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: var(--vp-c-text-1);
  font-size: 13px;
}
.kx-switch {
  min-width: 35px;
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.12);
  color: #8b95b5;
  font-size: 9px;
  font-weight: 800;
  text-align: center;
}
.kx-plugin--active .kx-switch {
  background: #6366f1;
  color: white;
}
.kx-plugin__description,
.kx-plugin__effect {
  display: block;
  margin-top: 7px;
  color: var(--vp-c-text-2);
  font-size: 11.5px;
  line-height: 1.45;
}
.kx-plugin__effect {
  color: var(--vp-c-text-1);
}
.kx-plugin__effect > span {
  color: #818cf8;
  font-weight: 700;
}
.kx-actions {
  justify-content: flex-end;
}
.kx-app-stage {
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 12px;
  background: #0a0f1e;
}
.kx-app-chrome {
  display: flex;
  align-items: center;
  gap: 5px;
  height: 32px;
  padding: 0 12px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.14);
  color: #64748b;
  font-size: 10px;
}
.kx-app-chrome span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #334155;
}
.kx-app-chrome strong {
  margin-left: 5px;
  font-weight: 600;
}
.kx-app-canvas {
  position: relative;
  min-height: 360px;
  padding: 20px;
  background:
    radial-gradient(circle at 30% 15%, rgba(99, 102, 241, 0.09), transparent 35%),
    #0d1324;
}
.kx-page-copy {
  display: grid;
  width: 45%;
  gap: 10px;
  opacity: 0.45;
}
.kx-page-copy span {
  height: 9px;
  border-radius: 4px;
  background: #25304a;
}
.kx-page-copy span:nth-child(2) {
  width: 80%;
}
.kx-page-copy span:nth-child(3) {
  width: 60%;
}
.kx-toast-region {
  position: absolute;
  top: 16px;
  right: 16px;
  display: grid;
  width: min(360px, calc(100% - 32px));
  gap: 9px;
}
.kx-toast {
  --toast-accent: #6366f1;
  position: relative;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) 20px;
  gap: 10px;
  padding: 13px;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.24);
  border-left: 3px solid var(--toast-accent);
  border-radius: 10px;
  background: rgba(20, 28, 49, 0.97);
  box-shadow: 0 16px 35px rgba(0, 0, 0, 0.28);
}
.kx-toast__icon {
  display: grid;
  width: 27px;
  height: 27px;
  place-items: center;
  border-radius: 8px;
  background: color-mix(in srgb, var(--toast-accent) 18%, transparent);
  color: var(--toast-accent);
  font-weight: 850;
}
.kx-toast__title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  color: #eef2ff;
  font-size: 12.5px;
}
.kx-pin,
.kx-tracked {
  color: #fbbf24;
  font-size: 9.5px;
  font-weight: 750;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.kx-toast__body p {
  margin: 4px 0 8px;
  color: #aeb8d1;
  font-size: 11.5px;
  line-height: 1.45;
}
.kx-toast__lifetime {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 5px 10px;
  color: #7f8aa8;
  font-size: 9.5px;
}
.kx-tracked {
  color: #34d399;
}
.kx-progress {
  height: 2px;
  margin-top: 7px;
  overflow: hidden;
  border-radius: 2px;
  background: #26314b;
}
.kx-progress span {
  display: block;
  height: 100%;
  background: var(--toast-accent);
  transition: width 250ms ease;
}
.kx-toast__dismiss {
  align-self: start;
  padding: 0;
  border: 0;
  background: transparent;
  color: #7f8aa8;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}
.kx-empty {
  padding: 18px;
  border: 1px dashed #334155;
  border-radius: 10px;
  color: #64748b;
  font-size: 11px;
  text-align: center;
}
.kx-output {
  margin-top: 15px;
  padding: 14px 16px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.025);
}
.kx-modifiers {
  margin-top: 16px;
}
.kx-modifiers__head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 15px;
  margin-bottom: 10px;
}
.kx-modifiers h3 {
  font-size: 14px;
}
.kx-modifiers__head p {
  max-width: 330px;
  margin: 0;
  color: var(--vp-c-text-2);
  font-size: 10.5px;
  line-height: 1.45;
  text-align: right;
}
.kx-output__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.kx-output__state {
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.1);
  color: #7f8aa8;
  font-size: 9.5px;
  font-weight: 800;
}
.kx-output__state--active {
  background: rgba(52, 211, 153, 0.12);
  color: #34d399;
}
.kx-events {
  margin: 11px 0 0;
  padding: 9px 9px 9px 30px;
  border-radius: 7px;
  background: rgba(3, 7, 18, 0.35);
  color: #86efac;
  font-size: 10.5px;
  line-height: 1.7;
}
.kx-output__empty {
  margin: 10px 0 0;
  font-size: 10.5px;
}
.kx-under-hood {
  margin-top: 12px;
  color: #8b95b5;
  font-size: 11px;
}
.kx-under-hood summary {
  cursor: pointer;
}
.kx-graph {
  margin-top: 8px;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.025);
}
.kx-graph__row {
  padding: 2px 0;
  color: #dbe1f4;
  overflow-wrap: anywhere;
}
.kx-graph__dim {
  color: #8b95b5;
}
.kx-graph__plugins {
  color: #34d399;
}

@media (max-width: 600px) {
  .pane-wide {
    padding-inline: 14px;
  }
  .kx-plugin-grid {
    grid-template-columns: 1fr;
  }
  .kx-actions {
    justify-content: flex-start;
  }
  .kx-demo-head,
  .kx-modifiers__head {
    align-items: flex-start;
    flex-direction: column;
  }
  .kx-modifiers__head p {
    text-align: left;
  }
  .kx-app-canvas {
    min-height: 390px;
    padding: 12px;
  }
  .kx-toast-region {
    top: 12px;
    right: 12px;
    width: calc(100% - 24px);
  }
}
</style>

This is the frontend half of a full-stack substrate. The same kernel can route construction on the server, so one plugin extends a model and its field in one package — the argument the VS Code post develops at length.

Released under the MIT License.

ivue — Infinite Vue ∞