// src/util.ts
function stringToElement(template) {
  const parser = new DOMParser();
  const doc = parser.parseFromString(template, "text/html");
  return doc.body.firstChild;
}
var isText = (node) => {
  return node.nodeType === Node.TEXT_NODE;
};
var isTemplate = (node) => {
  return node.nodeName === "TEMPLATE";
};
var isElement = (node) => {
  return node.nodeType === Node.ELEMENT_NODE;
};
function isObject(value) {
  return value !== null && typeof value === "object";
}
function isArray(value) {
  return Array.isArray(value);
}
function checkAndRemoveAttribute(el, attrName) {
  const attributeValue = el.getAttribute(attrName);
  if (attributeValue !== null) {
    el.removeAttribute(attrName);
  }
  return attributeValue;
}
function findSlotNodes(element) {
  const slots = [];
  const findSlots = (node) => {
    Array.from(node.childNodes).forEach((node2) => {
      if (isElement(node2)) {
        if (node2.nodeName === "SLOT") {
          slots.push({ node: node2, name: node2.getAttribute("name") || "default" });
        }
        if (node2.hasChildNodes()) {
          findSlots(node2);
        }
      }
    });
  };
  findSlots(element);
  return slots;
}
function findTemplateNodes(element) {
  const templates = [];
  const findTemplates = (element2) => {
    let defaultContentNodes = [];
    Array.from(element2.childNodes).forEach((node) => {
      if (isElement(node) || isText(node)) {
        if (isElement(node) && node.nodeName === "TEMPLATE" && isTemplate(node)) {
          templates.push({ targetSlotName: node.getAttribute("slot") || "", node });
        } else {
          defaultContentNodes.push(node);
        }
      }
    });
    if (defaultContentNodes.length > 0) {
      const defaultTemplate = document.createElement("template");
      defaultTemplate.setAttribute("slot", "default");
      defaultContentNodes.forEach((node) => {
        defaultTemplate.content.appendChild(node);
      });
      templates.push({ targetSlotName: "default", node: defaultTemplate });
    }
  };
  findTemplates(element);
  return templates;
}
var nextTick = async (f) => {
  await new Promise(
    (r) => setTimeout(
      (_) => requestAnimationFrame((_2) => {
        f && f();
        r();
      })
    )
  );
};
function html(strings, ...values) {
  const selfClosingTags = ["area", "base", "br", "col", "embed", "hr", "img", "input", "link", "meta", "param", "source", "track", "wbr"];
  let result = strings.reduce((acc, str, i) => acc + str + (values[i] || ""), "");
  result = result.replace(/<([a-zA-Z][^\s/>]*)\s*([^>]*?)\/>/g, (match, tagName, attributes) => {
    if (selfClosingTags.includes(tagName.toLowerCase())) {
      return match;
    }
    return `<${tagName} ${attributes}></${tagName}>`;
  });
  return result;
}
function toDisplayString(value) {
  return value == null ? "" : isObject(value) ? JSON.stringify(value, null, 2) : String(value);
}
function insertAfter(newNode, existingNode) {
  if (existingNode.nextSibling) {
    existingNode.parentNode.insertBefore(newNode, existingNode.nextSibling);
  } else {
    existingNode?.parentNode?.appendChild(newNode);
  }
}
function isPropAttribute(attrName) {
  if (attrName.startsWith(".")) {
    return true;
  }
  if (attrName.startsWith("{") && attrName.endsWith("}")) {
    return true;
  }
  return false;
}
function isSpreadProp(attr) {
  return attr.startsWith("...");
}
function isMirrorProp(attr) {
  return attr.startsWith("{") && attr.endsWith("}");
}
function isRegularProp(attr) {
  return attr.startsWith(".");
}
function isEventAttribute(attrName) {
  return attrName.startsWith("@");
}
function componentHasPropByName(name, component) {
  return Object.keys(component?.props ?? {}).some((prop) => prop === name);
}
function extractAttributeName(attrName) {
  return attrName.replace(/^\.\.\./, "").replace(/^\./, "").replace(/^{/, "").replace(/}$/, "").replace(/:bind$/, "");
}
function dashToCamel(str) {
  return str.toLowerCase().replace(/-([a-z])/g, (g) => g[1].toUpperCase());
}
function extractPropName(attrName) {
  return dashToCamel(extractAttributeName(attrName));
}
function classNames(_) {
  const classes = [];
  for (let i = 0; i < arguments.length; i++) {
    const arg = arguments[i];
    if (!arg) continue;
    const argType = typeof arg;
    if (argType === "string" || argType === "number") {
      classes.push(arg);
    } else if (Array.isArray(arg)) {
      if (arg.length) {
        const inner = classNames.apply(null, arg);
        if (inner) {
          classes.push(inner);
        }
      }
    } else if (argType === "object") {
      if (arg.toString === Object.prototype.toString) {
        for (let key in arg) {
          if (Object.hasOwnProperty.call(arg, key) && arg[key]) {
            classes.push(key);
          }
        }
      } else {
        classes.push(arg.toString());
      }
    }
  }
  return classes.join(" ");
}

// src/directives/attribute.ts
var AttributeDirective = class {
  element;
  context;
  expression;
  attr;
  extractedAttributeName;
  previousClasses = [];
  previousStyles = {};
  is = {
    sameNameProperty: false,
    bound: false,
    spread: false,
    componentProp: false
  };
  constructor({ element, context, attr }) {
    this.element = element;
    this.context = context;
    this.expression = attr.value;
    this.attr = attr;
    this.extractedAttributeName = extractAttributeName(attr.name);
    this.is = {
      sameNameProperty: attr.name.startsWith("{") && attr.name.endsWith("}"),
      bound: attr.name.includes(":bind"),
      spread: attr.name.startsWith("..."),
      componentProp: false
    };
    if (this.is.sameNameProperty) {
      this.expression = this.extractedAttributeName;
    }
    if (this.is.spread) {
      this.expression = this.extractedAttributeName;
    }
    element.removeAttribute(attr.name);
    if (this.is.bound) {
      context.effect(this.update.bind(this));
    } else {
      this.update();
    }
  }
  update() {
    let value = evalGet(this.context.scope, this.expression);
    if (this.is.spread && typeof value === "object") {
      for (const [key, val] of Object.entries(value)) {
        this.element.setAttribute(key, String(val));
      }
    } else if ((typeof value === "object" || Array.isArray(value)) && this.extractedAttributeName === "class") {
      value = classNames(value);
      const next = value.split(" ");
      const diff = next.filter((c) => !this.previousClasses.includes(c)).filter(Boolean);
      const rm = this.previousClasses.filter((c) => !next.includes(c));
      diff.forEach((c) => {
        this.previousClasses.push(c);
        this.element.classList.add(c);
      });
      rm.forEach((c) => {
        this.previousClasses = this.previousClasses.filter((addedClass) => addedClass !== c);
        this.element.classList.remove(c);
      });
    } else if (typeof value === "object" && this.extractedAttributeName === "style") {
      const next = Object.keys(value);
      const rm = Object.keys(this.previousStyles).filter((style) => !next.includes(style));
      next.forEach((style) => {
        this.previousStyles[style] = value[style];
        this.element.style[style] = value[style];
      });
      rm.forEach((style) => {
        this.previousStyles[style] = "";
        this.element.style[style] = "";
      });
      this.previousStyles = value;
    } else {
      this.element.setAttribute(this.extractedAttributeName, value);
    }
  }
};

// src/directives/event.ts
var EventDirective = class {
  element;
  context;
  expression;
  attr;
  eventCount = 0;
  constructor({ element, context, attr }) {
    this.element = element;
    this.context = context;
    this.expression = attr.value;
    this.attr = attr;
    const eventName = attr.name.replace(/^@/, "");
    const parts = eventName.split(".");
    this.element.addEventListener(parts[0], (event) => {
      if (parts.includes("prevent")) event.preventDefault();
      if (parts.includes("stop")) event.stopPropagation();
      if (parts.includes("once") && this.eventCount > 0) return;
      this.eventCount++;
      const handler = evalGet(context.scope, attr.value);
      if (typeof handler === "function") {
        handler(event);
      }
    });
    element.removeAttribute(attr.name);
  }
};

// src/directives/for.ts
var forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;
var forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
var stripParensRE = /^\(|\)$/g;
var destructureRE = /^[{[]\s*((?:[\w_$]+\s*,?\s*)+)[\]}]$/;
var _for = (el, exp, ctx, component, componentProps, allProps) => {
  const inMatch = exp.match(forAliasRE);
  if (!inMatch) {
    console.warn(`invalid :for expression: ${exp}`);
    return;
  }
  const nextNode = el.nextSibling;
  const parent = el.parentElement;
  const anchor = new Text("");
  parent.insertBefore(anchor, el);
  parent.removeChild(el);
  const sourceExp = inMatch[2].trim();
  let valueExp = inMatch[1].trim().replace(stripParensRE, "").trim();
  let destructureBindings;
  let isArrayDestructure = false;
  let indexExp;
  let objIndexExp;
  let keyAttr = "key";
  let keyExp = el.getAttribute(keyAttr) || el.getAttribute(keyAttr = ":key") || el.getAttribute(keyAttr = ":key:bind");
  if (keyExp) {
    el.removeAttribute(keyAttr);
    if (keyAttr === "key") keyExp = JSON.stringify(keyExp);
  }
  let match;
  if (match = valueExp.match(forIteratorRE)) {
    valueExp = valueExp.replace(forIteratorRE, "").trim();
    indexExp = match[1].trim();
    if (match[2]) {
      objIndexExp = match[2].trim();
    }
  }
  if (match = valueExp.match(destructureRE)) {
    destructureBindings = match[1].split(",").map((s) => s.trim());
    isArrayDestructure = valueExp[0] === "[";
  }
  let mounted = false;
  let blocks;
  let childCtxs;
  let keyToIndexMap;
  const createChildContexts = (source) => {
    const map = /* @__PURE__ */ new Map();
    const ctxs = [];
    if (isArray(source)) {
      for (let i = 0; i < source.length; i++) {
        ctxs.push(createChildContext(map, source[i], i));
      }
    } else if (typeof source === "number") {
      for (let i = 0; i < source; i++) {
        ctxs.push(createChildContext(map, i + 1, i));
      }
    } else if (isObject(source)) {
      let i = 0;
      for (const key in source) {
        ctxs.push(createChildContext(map, source[key], i++, key));
      }
    }
    return [ctxs, map];
  };
  const createChildContext = (map, value, index, objKey) => {
    const data = {};
    if (destructureBindings) {
      destructureBindings.forEach((b, i) => data[b] = value[isArrayDestructure ? i : b]);
    } else {
      data[valueExp] = value;
    }
    if (objKey) {
      indexExp && (data[indexExp] = objKey);
      objIndexExp && (data[objIndexExp] = index);
    } else {
      indexExp && (data[indexExp] = index);
    }
    const childCtx = createScopedContext(ctx, data);
    const key = keyExp ? evalGet(childCtx.scope, keyExp) : index;
    map.set(key, index);
    childCtx.key = key;
    return childCtx;
  };
  const mountBlock = (ctx2, ref2) => {
    const block = new Block({ element: el, parentContext: ctx2, replacementType: "replace", component, componentProps, allProps });
    block.key = ctx2.key;
    block.insert(parent, ref2);
    return block;
  };
  ctx.effect(() => {
    const source = evalGet(ctx.scope, sourceExp);
    const prevKeyToIndexMap = keyToIndexMap;
    [childCtxs, keyToIndexMap] = createChildContexts(source);
    if (!mounted) {
      blocks = childCtxs.map((s) => mountBlock(s, anchor));
      mounted = true;
    } else {
      for (let i2 = 0; i2 < blocks.length; i2++) {
        if (!keyToIndexMap.has(blocks[i2].key)) {
          blocks[i2].remove();
        }
      }
      const nextBlocks = [];
      let i = childCtxs.length;
      let nextBlock;
      let prevMovedBlock;
      while (i--) {
        const childCtx = childCtxs[i];
        const oldIndex = prevKeyToIndexMap.get(childCtx.key);
        let block;
        if (oldIndex == null) {
          block = mountBlock(childCtx, nextBlock ? nextBlock.element : anchor);
        } else {
          block = blocks[oldIndex];
          Object.assign(block.context.scope, childCtx.scope);
          if (oldIndex !== i) {
            if (blocks[oldIndex + 1] !== nextBlock || // If the next has moved, it must move too
            prevMovedBlock === nextBlock) {
              prevMovedBlock = block;
              block.insert(parent, nextBlock ? nextBlock.element : anchor);
            }
          }
        }
        nextBlocks.unshift(nextBlock = block);
      }
      blocks = nextBlocks;
    }
  });
  return nextNode;
};

// src/directives/if.ts
function _if(el, exp, ctx, component, componentProps, allProps) {
  const parent = el.parentElement;
  const anchor = new Comment(":if");
  parent.insertBefore(anchor, el);
  const branches = [{ exp, el }];
  let elseEl;
  let elseExp;
  while (elseEl = el.nextElementSibling) {
    elseExp = null;
    if (checkAndRemoveAttribute(elseEl, ":else") === "" || (elseExp = checkAndRemoveAttribute(elseEl, ":else-if"))) {
      parent.removeChild(elseEl);
      branches.push({ exp: elseExp, el: elseEl });
    } else {
      break;
    }
  }
  const nextNode = el.nextSibling;
  parent.removeChild(el);
  let block;
  let activeBranchIndex = -1;
  const removeActiveBlock = () => {
    if (block) {
      parent.insertBefore(anchor, block.element);
      block.remove();
      block = void 0;
    }
  };
  ctx.effect(() => {
    for (let i = 0; i < branches.length; i++) {
      const { exp: exp2, el: el2 } = branches[i];
      if (!exp2 || evalGet(ctx.scope, exp2)) {
        if (i !== activeBranchIndex) {
          removeActiveBlock();
          block = new Block({ element: el2, parentContext: ctx, replacementType: "replace", component, componentProps, allProps });
          block.insert(parent, anchor);
          parent.removeChild(anchor);
          activeBranchIndex = i;
        }
        return;
      }
    }
    activeBranchIndex = -1;
    removeActiveBlock();
  });
  return nextNode;
}

// src/directives/interpolation.ts
var delims = /{{\s?(.*?)\s?}}/g;
var InterpolationDirective = class {
  element;
  context;
  textNodes = /* @__PURE__ */ new Map();
  constructor({ element, context }) {
    this.element = element;
    this.context = context;
    this.findNodes();
    this.textNodes.forEach((nodes, expression) => {
      const trimmedExpression = expression.slice(2, -2).trim();
      nodes.forEach((node) => {
        const getter = (exp = trimmedExpression) => evalGet(this.context.scope, exp, node);
        context.effect(() => {
          node.textContent = toDisplayString(getter());
        });
      });
    });
  }
  findNodes() {
    const textContent = this.element.textContent.trim();
    if (textContent?.match(delims)) {
      const textNodes = textContent.split(/(\{\{\s?[^}]+\s?\}\})/g).filter(Boolean);
      if (textNodes) {
        let previousNode = this.element;
        for (let i = 0; i < textNodes.length; i++) {
          const textNode = textNodes[i];
          if (textNode.match(/\{\{\s?.+\s?\}\}/)) {
            const newNode = document.createTextNode(textNode);
            if (i === 0) {
              this.element.replaceWith(newNode);
            } else {
              insertAfter(newNode, previousNode);
            }
            previousNode = newNode;
            if (this.textNodes.has(textNode)) {
              this.textNodes.get(textNode).push(newNode);
            } else {
              this.textNodes.set(textNode, [newNode]);
            }
          } else {
            const newNode = document.createTextNode(textNodes[i]);
            if (i === 0) {
              this.element.replaceWith(newNode);
            } else {
              insertAfter(newNode, previousNode);
            }
            previousNode = newNode;
          }
        }
      }
    }
  }
  update() {
  }
};

// src/directives/show.ts
var ShowDirective = class {
  element;
  context;
  expression;
  originalDisplay;
  constructor({ element, context, expression }) {
    this.element = element;
    this.context = context;
    this.expression = expression;
    this.originalDisplay = getComputedStyle(this.element).display;
    context.effect(this.update.bind(this));
  }
  update() {
    const shouldShow = Boolean(evalGet(this.context.scope, this.expression));
    this.element.style.display = shouldShow ? this.originalDisplay : "none";
  }
};

// src/directives/teleport.ts
function _teleport(el, exp, ctx) {
  const anchor = new Comment(":teleport");
  el.replaceWith(anchor);
  const target = document.querySelector(exp);
  if (!target) {
    console.warn(`teleport target not found: ${exp}`);
    return;
  }
  nextTick(() => {
    target.appendChild(el);
    const observer = new MutationObserver((mutationsList) => {
      mutationsList.forEach((mutation) => {
        mutation.removedNodes.forEach((removedNode) => {
          if (removedNode.contains(anchor)) {
            el.remove();
            observer.disconnect();
          }
        });
      });
    });
    observer.observe(document.body, { childList: true, subtree: true });
    new Block({
      element: el,
      parentContext: ctx
    });
  });
  return anchor;
}

// src/directives/value.ts
function isInput(element) {
  return element instanceof HTMLInputElement;
}
function isTextarea(element) {
  return element instanceof HTMLTextAreaElement;
}
function isSelect(element) {
  return element instanceof HTMLSelectElement;
}
var ValueDirective = class {
  element;
  context;
  expression;
  inputType;
  constructor({ element, context, expression }) {
    this.element = element;
    this.context = context;
    this.expression = expression;
    this.inputType = element.getAttribute("type");
    if (isInput(element)) {
      switch (this.inputType) {
        case "text":
        case "password":
        case "number":
        case "color":
          element.addEventListener("input", () => {
            const value = this.inputType === "number" ? element.value ? parseFloat(element.value) : 0 : element.value;
            evalSet(this.context.scope, expression, value);
          });
          break;
        case "checkbox":
          element.addEventListener("change", (e) => {
            evalSet(this.context.scope, expression, !!e.currentTarget.checked);
          });
          break;
        case "radio":
          element.addEventListener("change", (e) => {
            if (e.currentTarget.checked) {
              evalSet(this.context.scope, expression, element.getAttribute("value"));
            }
          });
          break;
        default:
          break;
      }
    }
    if (isTextarea(element)) {
      element.addEventListener("input", () => {
        evalSet(this.context.scope, expression, element.value);
      });
    }
    if (isSelect(element)) {
      element.addEventListener("change", () => {
        evalSet(this.context.scope, expression, element.value);
      });
    }
    context.effect(this.updateElementValue.bind(this));
  }
  updateElementValue() {
    const value = evalGet(this.context.scope, this.expression, this.element);
    if (isInput(this.element)) {
      switch (this.inputType) {
        case "text":
        case "password":
        case "number":
        case "color":
          this.element.value = value;
          break;
        case "checkbox":
          this.element.checked = !!value;
          break;
        case "radio":
          this.element.checked = this.element.value === value;
          break;
        default:
          break;
      }
    }
    if (isTextarea(this.element)) {
      this.element.value = value;
    }
    if (isSelect(this.element)) {
      this.element.value = value;
    }
  }
};

// src/reactivity/effect.ts
var targetMap = /* @__PURE__ */ new WeakMap();
var effectStack = [];
function track(target, key) {
  const activeEffect = effectStack[effectStack.length - 1];
  if (!activeEffect) return;
  let effectsMap = targetMap.get(target);
  if (!effectsMap)
    targetMap.set(target, effectsMap = /* @__PURE__ */ new Map());
  let effects = effectsMap.get(key);
  if (!effects) effectsMap.set(key, effects = /* @__PURE__ */ new Set());
  if (!effects.has(activeEffect)) {
    effects.add(activeEffect);
    activeEffect.refs.push(effects);
  }
}
function trigger(target, key) {
  const effectsMap = targetMap.get(target);
  if (!effectsMap) return;
  const scheduled = /* @__PURE__ */ new Set();
  effectsMap.get(key)?.forEach((effect2) => {
    scheduled.add(effect2);
  });
  scheduled.forEach(run);
}
function stop2(effect2) {
  if (effect2.active) cleanup(effect2);
  effect2.active = false;
}
function start(effect2) {
  if (!effect2.active) {
    effect2.active = true;
    run(effect2);
  }
}
function run(effect2) {
  if (!effect2.active) return;
  if (effectStack.includes(effect2)) return;
  cleanup(effect2);
  let val;
  try {
    effectStack.push(effect2);
    val = effect2.handler();
  } finally {
    effectStack.pop();
  }
  return val;
}
function cleanup(effect2) {
  const { refs } = effect2;
  if (refs.length) {
    for (const ref2 of refs) {
      ref2.delete(effect2);
    }
  }
  refs.length = 0;
}
function effect(handler, opts = {}) {
  const { lazy } = opts;
  const newEffect = {
    active: !lazy,
    handler,
    refs: []
  };
  run(newEffect);
  return {
    start: () => {
      start(newEffect);
    },
    stop: () => {
      stop2(newEffect);
    },
    toggle: () => {
      if (newEffect.active) {
        stop2(newEffect);
      } else {
        start(newEffect);
      }
      return newEffect.active;
    }
  };
}

// src/reactivity/computed.ts
var $computed = Symbol("computed");
function isComputed(value) {
  return isObject(value) && value[$computed];
}

// src/reactivity/ref.ts
var $ref = Symbol("ref");
function isRef(value) {
  return isObject(value) && !!value[$ref];
}
function ref(value = null) {
  if (isObject(value)) {
    return isRef(value) ? value : reactive(value);
  }
  const result = { value, [$ref]: true };
  return new Proxy(result, {
    get(target, key, receiver) {
      const val = Reflect.get(target, key, receiver);
      track(result, "value");
      return val;
    },
    set(target, key, value2) {
      const oldValue = target[key];
      if (oldValue !== value2) {
        const success = Reflect.set(target, key, value2);
        if (success) {
          trigger(result, "value");
        }
      }
      return true;
    }
  });
}

// src/reactivity/reactive.ts
var $reactive = Symbol("reactive");
function reactive(value) {
  if (!isObject(value)) return ref(value);
  if (value[$reactive]) return value;
  value[$reactive] = true;
  Object.keys(value).forEach((key) => {
    if (isObject(value[key])) {
      value[key] = reactive(value[key]);
    }
  });
  return new Proxy(value, reactiveProxyHandler());
}
function reactiveProxyHandler() {
  return {
    deleteProperty(target, key) {
      const had = Reflect.has(target, key);
      const result = Reflect.deleteProperty(target, key);
      if (had) trigger(target, key);
      return result;
    },
    get(target, key) {
      track(target, key);
      return Reflect.get(target, key);
    },
    set(target, key, value) {
      if (target[key] === value) return true;
      let newObj = false;
      if (isObject(value) && !isObject(target[key])) {
        newObj = true;
      }
      if (Reflect.set(target, key, value)) {
        trigger(target, key);
      }
      if (newObj) {
        target[key] = reactive(target[key]);
      }
      return true;
    }
  };
}

// src/index.ts
function provide(key, value) {
  if (!current.componentBlock) {
    console.warn("Can't provide: no current component block");
  }
  current.componentBlock.provides.set(key, value);
}
function inject(key) {
  if (!current.componentBlock) {
    console.warn("Can't inject: no current component block");
  }
  let c = current.componentBlock;
  while (c) {
    if (c.provides.has(key)) {
      return c.provides.get(key);
    }
    c = c.parentComponentBlock;
  }
  return void 0;
}
var App = class {
  rootBlock;
  registry = /* @__PURE__ */ new Map();
  plugins = /* @__PURE__ */ new Set();
  register(name, component) {
    this.registry.set(name, component);
  }
  use(plugin, ...config) {
    this.plugins.add(plugin);
    plugin.use(this, ...config);
  }
  getComponent(tag) {
    return this.registry.get(tag);
  }
  mount(component, target = "body", props = {}) {
    const root = typeof target === "string" ? document.querySelector(target) : target;
    const display = root.style.display;
    root.style.display = "none";
    this.rootBlock = this._mount(component, root, props, true);
    root.style.display = display;
    return this.rootBlock;
  }
  _mount(component, target, props, isRoot = false) {
    const parentContext = createContext({ app: this });
    if (props) {
      parentContext.scope = reactive(props);
      bindContextMethods(parentContext.scope);
    }
    parentContext.scope.$isRef = isRef;
    parentContext.scope.$isComputed = isComputed;
    const block = new Block({
      element: target,
      parentContext,
      component,
      isRoot,
      componentProps: props,
      replacementType: "replaceChildren"
    });
    return block;
  }
  unmount() {
    this.rootBlock.teardown();
  }
};
function createContext({ parentContext, app: app2 }) {
  const context = {
    app: app2 ? app2 : parentContext && parentContext.app ? parentContext.app : null,
    scope: parentContext ? parentContext.scope : reactive({}),
    blocks: [],
    effects: [],
    slots: [],
    templates: parentContext ? parentContext.templates : [],
    effect: (handler) => {
      const e = effect(handler);
      context.effects.push(e);
      return e;
    }
  };
  return context;
}
var createScopedContext = (ctx, data = {}) => {
  const parentScope = ctx.scope;
  const mergedScope = Object.create(parentScope);
  Object.defineProperties(mergedScope, Object.getOwnPropertyDescriptors(data));
  let proxy;
  proxy = reactive(
    new Proxy(mergedScope, {
      set(target, key, val, receiver) {
        if (receiver === proxy && !target.hasOwnProperty(key)) {
          return Reflect.set(parentScope, key, val);
        }
        return Reflect.set(target, key, val, receiver);
      }
    })
  );
  bindContextMethods(proxy);
  const out = {
    ...ctx,
    scope: {
      ...ctx.scope,
      ...proxy
    }
  };
  return out;
};
function bindContextMethods(scope) {
  for (const key of Object.keys(scope)) {
    if (typeof scope[key] === "function") {
      scope[key] = scope[key].bind(scope);
    }
  }
}
function mergeProps(props, defaultProps) {
  const merged = {};
  Object.keys(defaultProps).forEach((defaultProp) => {
    const propValue = props.hasOwnProperty(defaultProp) ? props[defaultProp] : defaultProps[defaultProp]?.default;
    merged[defaultProp] = reactive(typeof propValue === "function" ? propValue() : propValue);
  });
  return merged;
}
var current = { componentBlock: void 0 };
var Block = class {
  element;
  context;
  parentContext;
  component;
  provides = /* @__PURE__ */ new Map();
  parentComponentBlock;
  componentProps;
  allProps;
  isFragment;
  start;
  end;
  key;
  constructor(opts) {
    this.isFragment = opts.element instanceof HTMLTemplateElement;
    this.parentComponentBlock = opts.parentComponentBlock;
    if (opts.component) {
      current.componentBlock = this;
      this.element = stringToElement(opts.component.template);
    } else {
      if (this.isFragment) {
        this.element = opts.element.content.cloneNode(true);
      } else if (typeof opts.element === "string") {
        this.element = stringToElement(opts.element);
      } else {
        this.element = opts.element.cloneNode(true);
        opts.element.replaceWith(this.element);
      }
    }
    if (opts.isRoot) {
      this.context = opts.parentContext;
    } else {
      this.parentContext = opts.parentContext ? opts.parentContext : createContext({});
      this.parentContext.blocks.push(this);
      this.context = createContext({ parentContext: opts.parentContext });
    }
    if (opts.component) {
      this.componentProps = mergeProps(opts.componentProps ?? {}, opts.component.props ?? {});
      if (opts.component.main) {
        this.context.scope = {
          ...opts.component.main(this.componentProps) || {}
        };
      }
    }
    opts.allProps?.forEach((prop) => {
      if (prop.isBind) {
        this.context.effect(() => {
          let newValue;
          if (prop.isSpread) {
            const spreadProps = evalGet(this.parentContext.scope, prop.extractedName);
            if (isObject(spreadProps)) {
              Object.keys(spreadProps).forEach((key) => {
                newValue = spreadProps[key];
                this.setProp(key, newValue);
              });
            }
          } else {
            newValue = prop.isMirror ? evalGet(this.parentContext.scope, prop.extractedName) : evalGet(this.parentContext.scope, prop.exp);
            this.setProp(prop.extractedName, newValue);
          }
        });
      }
    });
    this.context.slots = findSlotNodes(this.element);
    this.context.templates = opts.templates ?? [];
    this.context.slots.forEach((slot) => {
      const template = this.context.templates.find((t) => t.targetSlotName === slot.name);
      if (template) {
        const templateContents = template.node.content.cloneNode(true);
        slot.node.replaceWith(templateContents);
      }
    });
    this.context.scope.$isRef = isRef;
    this.context.scope.$isComputed = isComputed;
    walk(this.element, this.context);
    if (opts.component) {
      if (opts.replacementType === "replace") {
        if (opts.element instanceof HTMLElement) {
          opts.element.replaceWith(this.element);
        }
      } else {
        if (opts.element instanceof HTMLElement) {
          opts.element.replaceChildren(this.element);
        }
      }
    }
  }
  setProp(name, value) {
    if (isRef(this.componentProps[name])) {
      this.componentProps[name].value = value;
    } else {
      this.componentProps[name] = value;
    }
  }
  insert(parent, anchor = null) {
    if (this.isFragment) {
      if (this.start) {
        let node = this.start;
        let next;
        while (node) {
          next = node.nextSibling;
          parent.insertBefore(node, anchor);
          if (node === this.end) {
            break;
          }
          node = next;
        }
      } else {
        this.start = new Text("");
        this.end = new Text("");
        parent.insertBefore(this.end, anchor);
        parent.insertBefore(this.start, this.end);
        parent.insertBefore(this.element, this.end);
      }
    } else {
      parent.insertBefore(this.element, anchor);
    }
  }
  remove() {
    if (this.parentContext) {
      const i = this.parentContext.blocks.indexOf(this);
      if (i > -1) {
        this.parentContext.blocks.splice(i, 1);
      }
    }
    if (this.start) {
      const parent = this.start.parentNode;
      let node = this.start;
      let next;
      while (node) {
        next = node.nextSibling;
        parent.removeChild(node);
        if (node === this.end) {
          break;
        }
        node = next;
      }
    } else {
      this.element.remove();
    }
    this.teardown();
  }
  teardown() {
    this.context.blocks.forEach((block) => {
      block.teardown();
    });
    this.context.effects.forEach(stop);
  }
};
function isComponent(element, context) {
  return !!context.app.getComponent(element.tagName.toLowerCase());
}
function walk(node, context) {
  if (isText(node)) {
    new InterpolationDirective({ element: node, context });
    return;
  }
  if (isElement(node)) {
    let exp;
    if (isComponent(node, context)) {
      const component = context.app.getComponent(node.tagName.toLowerCase());
      const allProps = Array.from(node.attributes).filter((attr) => isSpreadProp(attr.name) || isMirrorProp(attr.name) || isRegularProp(attr.name) && componentHasPropByName(extractPropName(attr.name), component)).map((attr) => ({
        isMirror: isMirrorProp(attr.name),
        isSpread: isSpreadProp(attr.name),
        isBind: attr.name.includes("bind"),
        originalName: attr.name,
        extractedName: extractPropName(attr.name),
        exp: attr.value,
        value: isMirrorProp(attr.name) ? evalGet(context.scope, extractPropName(attr.name)) : attr.value ? evalGet(context.scope, attr.value) : void 0
      }));
      const componentProps = allProps.reduce((acc, { isSpread, isMirror, extractedName, value }) => {
        if (isSpread) {
          const spread = evalGet(context.scope, extractedName);
          if (isObject(spread)) Object.assign(acc, spread);
        } else if (isMirror) {
          acc[extractedName] = evalGet(context.scope, extractedName);
        } else {
          acc[extractedName] = value;
        }
        return acc;
      }, {});
      if (exp = checkAndRemoveAttribute(node, ":teleport")) {
        return _teleport(node, exp, context);
      }
      if (exp = checkAndRemoveAttribute(node, ":if")) {
        return _if(node, exp, context, component, componentProps, allProps);
      }
      if (exp = checkAndRemoveAttribute(node, ":for")) {
        return _for(node, exp, context, component, componentProps, allProps);
      }
      if (exp = checkAndRemoveAttribute(node, ":show")) {
        new ShowDirective({ element: node, context, expression: exp });
      }
      const templates = findTemplateNodes(node);
      const block = new Block({
        element: node,
        parentContext: context,
        component,
        replacementType: "replace",
        parentComponentBlock: current.componentBlock,
        templates,
        componentProps,
        allProps
      });
      return block.element;
    }
    if (exp = checkAndRemoveAttribute(node, ":teleport")) {
      return _teleport(node, exp, context);
    }
    if (exp = checkAndRemoveAttribute(node, ":if")) {
      return _if(node, exp, context);
    }
    if (exp = checkAndRemoveAttribute(node, ":for")) {
      return _for(node, exp, context);
    }
    if (exp = checkAndRemoveAttribute(node, ":ref")) {
      context.scope[exp].value = node;
    }
    if (exp = checkAndRemoveAttribute(node, ":value")) {
      new ValueDirective({ element: node, context, expression: exp });
    }
    if (exp = checkAndRemoveAttribute(node, ":show")) {
      new ShowDirective({ element: node, context, expression: exp });
    }
    Array.from(node.attributes).forEach((attr) => {
      if (isPropAttribute(attr.name)) {
        new AttributeDirective({ element: node, context, attr });
      }
      if (isEventAttribute(attr.name)) {
        new EventDirective({ element: node, context, attr });
      }
    });
    walkChildren(node, context);
  }
}
function walkChildren(node, context) {
  let child = node.firstChild;
  while (child) {
    child = walk(child, context) || child.nextSibling;
  }
}
var evalFuncCache = {};
function evalGet(scope, exp, el) {
  if (!exp.trim()) return void 0;
  return execute(scope, `const ___value = (${exp.trim()}); return ___value;`, el);
}
function evalSet(scope, exp, value) {
  value = typeof value === "string" ? `"${value}"` : value;
  return execute(scope, `const ___target = (${exp.trim()}); return $isRef(___target) ? ___target.value = ${value} : ___target = ${value};`, null, false);
}
function execute(scope, exp, el, flatRefs = true) {
  const newScope = flatRefs ? flattenRefs(scope) : scope;
  const fn = evalFuncCache[exp] || (evalFuncCache[exp] = toFunction(exp));
  try {
    return fn(newScope, el);
  } catch (e) {
    console.warn(`Error evaluating expression: "${exp}":`);
    console.error(e);
  }
}
function toFunction(exp) {
  try {
    return new Function("$data", "$el", `with($data){${exp}}`);
  } catch (e) {
    console.error(`${e.message} in expression: ${exp}`);
    return () => {
    };
  }
}
function flattenRefs(scope) {
  const mapped = {};
  for (const key in scope) {
    if (scope.hasOwnProperty(key)) {
      if (isRef(scope[key])) {
        mapped[key] = scope[key].value;
      } else {
        mapped[key] = scope[key];
      }
    }
  }
  return mapped;
}
var counter = {
  template: html`
    <div>
      <div :teleport="body" :if="style.color === 'gray'">true</div>
      <h3 {style:bind}>Count: {{count}}{{count >= 2 ? '!!!' : ''}}</h3>
      <button @click="increment">+</button>
      <button @click="decrement">-</button>
    </div>
  `,
  main() {
    const count = ref(0);
    const style = reactive({ color: "gray" });
    const increment = () => count.value++;
    const decrement = () => count.value--;
    setInterval(() => {
      style.color = style.color === "gray" ? "white" : "gray";
    }, 500);
    return { count, increment, decrement, style };
  }
};
var app = new App();
app.mount(counter, "#app");
export {
  App,
  Block,
  createContext,
  createScopedContext,
  current,
  evalGet,
  evalSet,
  inject,
  provide
};
//# sourceMappingURL=index.js.map