solid-laze/dist/cjs/development/index.cjs

Lazily render components in Solid

"use strict";
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// src/index.ts
var src_exports = {};
__export(src_exports, {
  default: () => useLaze
});
module.exports = __toCommonJS(src_exports);

// src/useLaze.ts
var import_solid_js = require("solid-js");
function useLaze(options) {
  const [visible, setVisible] = (0, import_solid_js.createSignal)(false);
  const [ref, setRef] = (0, import_solid_js.createSignal)(null);
  (0, import_solid_js.createEffect)(() => {
    setVisible(false);
    const shouldRefresh = options == null ? void 0 : options.refresh;
    const current = ref();
    if (!current) {
      return;
    }
    const observer = new IntersectionObserver((entries) => {
      for (const entry of entries) {
        if (shouldRefresh) {
          setVisible(entry.isIntersecting);
        } else if (entry.isIntersecting) {
          setVisible(true);
          observer.disconnect();
        }
      }
    });
    observer.observe(current);
    (0, import_solid_js.onCleanup)(() => {
      observer.unobserve(current);
      observer.disconnect();
    });
  });
  return {
    ref(value) {
      return setRef(() => value);
    },
    get visible() {
      return visible();
    }
  };
}
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