chore: migrate package sources from Aphrody

README.md

@@ -1,2 +1,21 @@
-# aphrody-m3-front
+<!-- SPDX-License-Identifier: Apache-2.0 -->
-Aphrody package @aphrody/m3-front
+
+# `@aphrody/m3-front`
+
+Framework-agnostic front layer over `@aphrody/material-web` and `@aphrody/m3-tokens`. No React, no build step.
+
+```ts
+import "@aphrody/m3-front"; // defines <m3-theme>
+import { registerM3, observeWindowClass } from "@aphrody/m3-front";
+await registerM3("all"); // lazy md-* catalog ("aphrody" for the extensions)
+observeWindowClass(); // data-m3-width / data-m3-height / data-m3-nav on <html>
+```
+
+```html
+<m3-theme seed="#6750a4" mode="auto" variant="tonalSpot"> ... md-* elements ... </m3-theme>
+```
+
+`<m3-theme>` scopes the dynamic colour roles to its subtree, follows `prefers-color-scheme` in `auto`, and
+fires `m3-theme-change`. `registerM3Component("button/filled-button")` loads one element.
+
+`bun test test/` (happy-dom), `bun run typecheck`.

bunfig.toml

@@ -0,0 +1,2 @@
+[test]
+preload = ["@aphrody/m3-config/test/dom"]

package.json

@@ -0,0 +1,48 @@
+{
+  "name": "@aphrody/m3-front",
+  "version": "1.4.4",
+  "description": "Framework-agnostic Material 3 front layer: <m3-theme> web component, lazy material-web registration and window-class observation on top of @aphrody/material-web and @aphrody/m3-tokens.",
+  "license": "Apache-2.0",
+  "author": "aphrody-code",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/aphrody-labs/aphrody-m3.git",
+    "directory": "packages/m3-front"
+  },
+  "files": [
+    "src"
+  ],
+  "type": "module",
+  "sideEffects": [
+    "./src/theme-element.ts"
+  ],
+  "main": "./src/index.ts",
+  "types": "./src/index.ts",
+  "exports": {
+    ".": "./src/index.ts",
+    "./theme-element": "./src/theme-element.ts",
+    "./register": "./src/register.ts",
+    "./window-class": "./src/window-class.ts",
+    "./package.json": "./package.json"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "scripts": {
+    "test": "bun test test/",
+    "typecheck": "bun check -p tsconfig.json --noEmit",
+    "lint": "oxlint src test"
+  },
+  "dependencies": {
+    "@aphrody/m3-tokens": "workspace:*",
+    "@aphrody/material-web": "catalog:"
+  },
+  "devDependencies": {
+    "@aphrody/bun": "^3.3.0",
+    "@aphrody/m3-config": "workspace:*",
+    "typescript": "catalog:"
+  },
+  "engines": {
+    "bun": ">=1.4.4"
+  }
+}

src/index.ts

@@ -0,0 +1,5 @@
+// SPDX-License-Identifier: Apache-2.0
+export { M3ThemeElement, defineM3Theme, type ThemeMode } from "./theme-element.ts";
+export { registerM3, registerM3Component, whenDefined, type M3Catalog } from "./register.ts";
+export { observeWindowClass, windowClassFor, type WindowClassState } from "./window-class.ts";
+export { cssFromSeed, schemeFromSeed, applyDynamicColor } from "@aphrody/m3-tokens/dynamic-color";

src/register.ts

@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: Apache-2.0
+// Lazy registration of the @aphrody/material-web element catalogs. Nothing is imported until asked,
+// so the front layer stays SSR-safe and tree-shakable.
+
+export type M3Catalog = "all" | "aphrody";
+
+const CATALOGS: Record<M3Catalog, () => Promise<unknown>> = {
+  all: () => import("@aphrody/material-web/all.js"),
+  aphrody: () => import("@aphrody/material-web/aphrody-components.js"),
+};
+
+/** Load whole catalogs: `all` (upstream md-*) and `aphrody` (Aphrody extension elements). */
+export async function registerM3(...catalogs: M3Catalog[]): Promise<void> {
+  for (const catalog of catalogs) {
+    if (!Object.hasOwn(CATALOGS, catalog)) throw new Error(`invalid M3 catalog "${catalog}"`);
+  }
+  await Promise.all(catalogs.map((c) => CATALOGS[c]()));
+}
+
+/**
+ * Load single components by material-web path, e.g. `"button/filled-button"` or `"switch/switch"`.
+ * Only a-z, 0-9, `-` and one `/` are accepted.
+ */
+export async function registerM3Component(...paths: string[]): Promise<void> {
+  for (const path of paths) {
+    if (!/^[a-z0-9-]+\/[a-z0-9-]+$/.test(path)) throw new Error(`invalid component path "${path}"`);
+  }
+  await Promise.all(
+    paths.map((path) => import(/* @vite-ignore */ `@aphrody/material-web/${path}.js`)),
+  );
+}
+
+/** Resolve once every tag is defined. */
+export async function whenDefined(tags: readonly string[]): Promise<void> {
+  await Promise.all(tags.map((t) => customElements.whenDefined(t)));
+}

src/theme-element.ts

@@ -0,0 +1,113 @@
+// SPDX-License-Identifier: Apache-2.0
+// <m3-theme seed="#6750a4" mode="auto" variant="tonalSpot" contrast="0"> scopes a dynamic M3 colour
+// scheme to its subtree (display: contents) with no framework: any <md-*> inside re-themes live.
+import { schemeFromSeed, type SchemeVariant } from "@aphrody/m3-tokens/dynamic-color";
+
+export type ThemeMode = "light" | "dark" | "auto";
+
+// Importing the pure front helpers must also work in server renderers without a DOM.
+// The browser receives the real HTMLElement; the server never constructs or registers elements.
+// eslint-disable-next-line @typescript-eslint/no-extraneous-class -- The SSR fallback is only a constructor base and never instantiated.
+const HTMLElementBase = globalThis.HTMLElement ?? (class {} as typeof HTMLElement);
+
+export class M3ThemeElement extends HTMLElementBase {
+  static observedAttributes = ["seed", "mode", "variant", "contrast"];
+  #applied: string[] = [];
+  #media: MediaQueryList | null = null;
+  #listener = (): void => {
+    if (this.mode === "auto") this.apply();
+  };
+
+  connectedCallback(): void {
+    this.style.display = "contents";
+    this.#media =
+      this.ownerDocument.defaultView?.matchMedia?.("(prefers-color-scheme: dark)") ?? null;
+    this.#media?.addEventListener("change", this.#listener);
+    this.apply();
+  }
+
+  disconnectedCallback(): void {
+    this.#media?.removeEventListener("change", this.#listener);
+    this.#media = null;
+    this.clear();
+    this.style.removeProperty("color-scheme");
+    delete this.dataset["resolvedMode"];
+  }
+
+  attributeChangedCallback(): void {
+    if (this.isConnected) this.apply();
+  }
+
+  get seed(): string {
+    return this.getAttribute("seed") ?? "#6750a4";
+  }
+  set seed(v: string) {
+    this.setAttribute("seed", v);
+  }
+  get mode(): ThemeMode {
+    const m = this.getAttribute("mode");
+    return m === "light" || m === "dark" ? m : "auto";
+  }
+  set mode(v: ThemeMode) {
+    this.setAttribute("mode", v);
+  }
+
+  get variant(): SchemeVariant {
+    return (this.getAttribute("variant") ?? "tonalSpot") as SchemeVariant;
+  }
+  set variant(v: SchemeVariant) {
+    this.setAttribute("variant", v);
+  }
+
+  get contrast(): number {
+    return Number(this.getAttribute("contrast") ?? 0);
+  }
+  set contrast(v: number) {
+    this.setAttribute("contrast", String(v));
+  }
+
+  /** The mode in effect (auto resolves through prefers-color-scheme). */
+  get resolvedMode(): "light" | "dark" {
+    if (this.mode !== "auto") return this.mode;
+    return this.#media?.matches ? "dark" : "light";
+  }
+
+  apply(): void {
+    const dark = this.resolvedMode === "dark";
+    // Derive before changing styles: rejected inputs keep the last complete scheme.
+    const roles = schemeFromSeed(this.seed, {
+      dark,
+      variant: this.variant,
+      contrastLevel: this.contrast,
+    });
+    this.clear();
+    for (const [k, val] of Object.entries(roles)) {
+      this.style.setProperty(k, val);
+      this.#applied.push(k);
+    }
+    this.style.setProperty("color-scheme", dark ? "dark" : "light");
+    this.dataset["resolvedMode"] = dark ? "dark" : "light";
+    this.dispatchEvent(
+      new CustomEvent("m3-theme-change", {
+        detail: { seed: this.seed, dark, variant: this.variant, contrastLevel: this.contrast },
+        bubbles: true,
+        composed: true,
+      }),
+    );
+  }
+
+  private clear(): void {
+    for (const k of this.#applied) this.style.removeProperty(k);
+    this.#applied = [];
+  }
+}
+
+/** Define `<m3-theme>` or a custom tag (idempotent and safe to import during SSR). */
+export function defineM3Theme(tag = "m3-theme"): void {
+  const registry = globalThis.customElements;
+  if (!registry || registry.get(tag)) return;
+  // A CustomElementRegistry cannot associate one constructor with multiple tags.
+  registry.define(tag, tag === "m3-theme" ? M3ThemeElement : class extends M3ThemeElement {});
+}
+
+defineM3Theme();

src/window-class.ts

@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: Apache-2.0
+import {
+  classifyHeight,
+  classifyWidth,
+  navigationFor,
+  panesFor,
+  type NavigationKind,
+  type WindowHeightClass,
+  type WindowSizeClass,
+} from "@aphrody/m3-tokens/breakpoints";
+
+export interface WindowClassState {
+  width: WindowSizeClass;
+  height: WindowHeightClass;
+  navigation: NavigationKind;
+  panes: 1 | 2 | 3;
+}
+
+export function windowClassFor(widthDp: number, heightDp: number): WindowClassState {
+  const width = classifyWidth(widthDp);
+  return {
+    width,
+    height: classifyHeight(heightDp),
+    navigation: navigationFor(width),
+    panes: panesFor(width),
+  };
+}
+
+/**
+ * Observe the window size classes and mirror them on `target` as `data-m3-width`, `data-m3-height`,
+ * `data-m3-nav`. Calls `onChange` when a class changes. Returns a disposer.
+ */
+export function observeWindowClass(
+  onChange?: (s: WindowClassState) => void,
+  target: HTMLElement = document.documentElement,
+  win: Window = window,
+): () => void {
+  let last = "";
+  const update = (): void => {
+    const s = windowClassFor(win.innerWidth, win.innerHeight);
+    target.dataset["m3Width"] = s.width;
+    target.dataset["m3Height"] = s.height;
+    target.dataset["m3Nav"] = s.navigation;
+    const key = `${s.width}/${s.height}`;
+    if (key !== last) {
+      last = key;
+      onChange?.(s);
+    }
+  };
+  update();
+  win.addEventListener("resize", update);
+  return () => win.removeEventListener("resize", update);
+}

test/front.test.ts

@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: Apache-2.0
+import { describe, expect, test } from "bun:test";
+import {
+  M3ThemeElement,
+  observeWindowClass,
+  registerM3Component,
+  windowClassFor,
+} from "../src/index.ts";
+
+describe("<m3-theme>", () => {
+  test("is registered and scopes the colour roles to its subtree", () => {
+    expect(customElements.get("m3-theme")).toBe(M3ThemeElement);
+    const el = document.createElement("m3-theme") as M3ThemeElement;
+    el.setAttribute("seed", "#6750a4");
+    el.setAttribute("mode", "light");
+    document.body.append(el);
+    expect(el.style.getPropertyValue("--md-sys-color-primary")).toMatch(/^#[0-9a-f]{6}$/);
+    expect(el.dataset["resolvedMode"]).toBe("light");
+    const lightSurface = el.style.getPropertyValue("--md-sys-color-surface");
+    el.mode = "dark";
+    expect(el.dataset["resolvedMode"]).toBe("dark");
+    expect(el.style.getPropertyValue("--md-sys-color-surface")).not.toBe(lightSurface);
+    expect(document.documentElement.style.getPropertyValue("--md-sys-color-primary")).toBe("");
+    el.remove();
+    expect(el.style.getPropertyValue("--md-sys-color-primary")).toBe("");
+  });
+
+  test("emits m3-theme-change", () => {
+    const el = document.createElement("m3-theme") as M3ThemeElement;
+    let seen = 0;
+    el.addEventListener("m3-theme-change", () => seen++);
+    document.body.append(el);
+    el.seed = "#336699";
+    expect(seen).toBeGreaterThanOrEqual(2);
+    el.remove();
+  });
+});
+
+describe("window classes", () => {
+  test("classifies width and height", () => {
+    expect(windowClassFor(500, 400)).toEqual({
+      width: "compact",
+      height: "compact",
+      navigation: "bar",
+      panes: 1,
+    });
+    expect(windowClassFor(1300, 950)).toEqual({
+      width: "large",
+      height: "expanded",
+      navigation: "rail-expanded",
+      panes: 2,
+    });
+  });
+
+  test("mirrors classes on the target and disposes", () => {
+    const target = document.createElement("div");
+    const seen: string[] = [];
+    const dispose = observeWindowClass((s) => seen.push(s.width), target, {
+      innerWidth: 700,
+      innerHeight: 500,
+      addEventListener() {},
+      removeEventListener() {},
+    } as unknown as Window);
+    expect(target.dataset["m3Width"]).toBe("medium");
+    expect(target.dataset["m3Height"]).toBe("medium");
+    expect(target.dataset["m3Nav"]).toBe("rail-collapsed");
+    expect(seen).toEqual(["medium"]);
+    dispose();
+  });
+});
+
+describe("registration", () => {
+  test("rejects unsafe component paths", async () => {
+    await expect(registerM3Component("../evil")).rejects.toThrow("invalid component path");
+  });
+});

test/production-contract.test.ts

@@ -0,0 +1,171 @@
+// SPDX-License-Identifier: Apache-2.0
+import { afterEach, describe, expect, test } from "bun:test";
+import { schemeFromSeed } from "@aphrody/m3-tokens/dynamic-color";
+import { defineM3Theme, M3ThemeElement, observeWindowClass, registerM3 } from "../src/index.ts";
+
+const originalMatchMedia = window.matchMedia;
+afterEach(() => {
+  document.body.replaceChildren();
+  window.matchMedia = originalMatchMedia;
+});
+
+function colorPreference(dark = false) {
+  const listeners = new Set<() => void>();
+  const media = {
+    matches: dark,
+    addEventListener(_type: string, listener: () => void) {
+      listeners.add(listener);
+    },
+    removeEventListener(_type: string, listener: () => void) {
+      listeners.delete(listener);
+    },
+  };
+  window.matchMedia = () => media as unknown as MediaQueryList;
+  return {
+    listeners,
+    change(value: boolean) {
+      media.matches = value;
+      for (const listener of listeners) listener();
+    },
+  };
+}
+
+describe("front production contract", () => {
+  test("imports all public front helpers in a server without DOM globals", async () => {
+    const child = Bun.spawn(
+      [
+        process.execPath,
+        "-e",
+        'const front = await import("@aphrody/m3-front"); front.defineM3Theme(); console.log(front.windowClassFor(600, 480).width);',
+      ],
+      {
+        windowsHide: true,
+        cwd: Bun.fileURLToPath(new URL("..", import.meta.url)),
+        stdout: "pipe",
+        stderr: "pipe",
+      },
+    );
+    const [code, stdout, stderr] = await Promise.all([
+      child.exited,
+      new Response(child.stdout).text(),
+      new Response(child.stderr).text(),
+    ]);
+    expect(stderr).toBe("");
+    expect(code).toBe(0);
+    expect(stdout.trim()).toBe("medium");
+  });
+
+  test("registers independent custom tag aliases idempotently", () => {
+    defineM3Theme("m3-custom-theme");
+    const ctor = customElements.get("m3-custom-theme");
+    defineM3Theme("m3-custom-theme");
+    expect(customElements.get("m3-custom-theme")).toBe(ctor);
+    const element = document.createElement("m3-custom-theme");
+    expect(element).toBeInstanceOf(M3ThemeElement);
+    document.body.append(element);
+    expect(element.style.getPropertyValue("--md-sys-color-primary")).toMatch(/^#[0-9a-f]{6}$/);
+  });
+
+  test("reacts to contrast and variant and announces complete roles across shadow boundaries", () => {
+    colorPreference();
+    const host = document.createElement("div");
+    document.body.append(host);
+    const shadow = host.attachShadow({ mode: "open" });
+    const element = document.createElement("m3-theme") as M3ThemeElement;
+    element.dir = "rtl";
+    const changes: Array<{ variant: string; contrastLevel: number }> = [];
+    const onChange = (event: Event) => changes.push((event as CustomEvent).detail);
+    document.addEventListener("m3-theme-change", onChange);
+    try {
+      shadow.append(element);
+      element.variant = "fidelity";
+      element.contrast = 1;
+      const roles = schemeFromSeed(element.seed, { variant: "fidelity", contrastLevel: 1 });
+      for (const [role, value] of Object.entries(roles)) {
+        expect(element.style.getPropertyValue(role)).toBe(value);
+      }
+      expect(element.dir).toBe("rtl");
+      expect(changes.at(-1)).toMatchObject({ variant: "fidelity", contrastLevel: 1 });
+    } finally {
+      document.removeEventListener("m3-theme-change", onChange);
+    }
+  });
+
+  test("only auto mode follows system changes and reconnects with one live subscription", () => {
+    const preference = colorPreference();
+    const element = document.createElement("m3-theme") as M3ThemeElement;
+    let events = 0;
+    element.addEventListener("m3-theme-change", () => events++);
+    document.body.append(element);
+    expect(preference.listeners.size).toBe(1);
+    preference.change(true);
+    expect(element.resolvedMode).toBe("dark");
+    element.mode = "light";
+    const beforeChange = events;
+    preference.change(false);
+    expect(events).toBe(beforeChange);
+    element.mode = "auto";
+    element.remove();
+    expect(preference.listeners.size).toBe(0);
+    expect(element.style.getPropertyValue("--md-sys-color-primary")).toBe("");
+    expect(element.style.getPropertyValue("color-scheme")).toBe("");
+    expect(element.dataset["resolvedMode"]).toBeUndefined();
+    document.body.append(element);
+    expect(preference.listeners.size).toBe(1);
+    preference.change(true);
+    expect(element.dataset["resolvedMode"]).toBe("dark");
+  });
+
+  test("rejects invalid contrast atomically instead of silently resetting it", () => {
+    const element = document.createElement("m3-theme") as M3ThemeElement;
+    document.body.append(element);
+    const style = element.style.cssText;
+    let events = 0;
+    element.addEventListener("m3-theme-change", () => events++);
+    expect(() => element.setAttribute("contrast", "invalid")).toThrow("contrast");
+    expect(element.style.cssText).toBe(style);
+    expect(events).toBe(0);
+    element.contrast = 0.5;
+    expect(element.contrast).toBe(0.5);
+    expect(events).toBe(1);
+  });
+
+  test("adaptive observation publishes changes once and removes its exact listener", () => {
+    const target = document.createElement("div");
+    let width = 599;
+    let resize: (() => void) | undefined;
+    let removed: (() => void) | undefined;
+    const win = {
+      get innerWidth() {
+        return width;
+      },
+      innerHeight: 900,
+      addEventListener(_type: string, listener: () => void) {
+        resize = listener;
+      },
+      removeEventListener(_type: string, listener: () => void) {
+        removed = listener;
+      },
+    };
+    const states: string[] = [];
+    const dispose = observeWindowClass(
+      (state) => states.push(state.width),
+      target,
+      win as unknown as Window,
+    );
+    width = 600;
+    resize?.();
+    resize?.();
+    width = 840;
+    resize?.();
+    expect(states).toEqual(["compact", "medium", "expanded"]);
+    expect(target.dataset["m3Nav"]).toBe("rail-collapsed");
+    dispose();
+    expect(removed).toBe(resize);
+  });
+
+  test("rejects prototype names as catalog keys", async () => {
+    await expect(registerM3("__proto__" as "all")).rejects.toThrow("invalid M3 catalog");
+    await expect(registerM3("constructor" as "all")).rejects.toThrow("invalid M3 catalog");
+  });
+});

tsconfig.json

@@ -0,0 +1,6 @@
+{
+  "extends": "@aphrody/m3-config/tsconfig.json",
+  "compilerOptions": { "types": ["bun", "node"] },
+  "include": ["src/**/*", "test/**/*"],
+  "exclude": ["node_modules", "dist"]
+}