@substrate-system/scroll-lock/dist/index.js

Prevent scrolling

var __defProp = Object.defineProperty;
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });
const locks = /* @__PURE__ */ new Set();
function getScrollbarWidth() {
  const documentWidth = document.documentElement.clientWidth;
  return Math.abs(window.innerWidth - documentWidth);
}
__name(getScrollbarWidth, "getScrollbarWidth");
function getExistingBodyPadding() {
  const padding = Number(
    getComputedStyle(document.body).paddingRight.replace(/px/, "")
  );
  if (isNaN(padding) || !padding) {
    return 0;
  }
  return padding;
}
__name(getExistingBodyPadding, "getExistingBodyPadding");
function lockBodyScrolling(lockingEl) {
  locks.add(lockingEl);
  if (!document.documentElement.classList.contains("scroll-lock")) {
    const scrollbarWidth = getScrollbarWidth() + getExistingBodyPadding();
    let scrollbarGutterProperty = getComputedStyle(document.documentElement).scrollbarGutter;
    if (!scrollbarGutterProperty || scrollbarGutterProperty === "auto") {
      scrollbarGutterProperty = "stable";
    }
    if (scrollbarWidth < 2) {
      scrollbarGutterProperty = "";
    }
    document.documentElement.style.setProperty(
      "--scroll-lock-gutter",
      scrollbarGutterProperty
    );
    document.documentElement.classList.add("scroll-lock");
    document.documentElement.style.setProperty(
      "--scroll-lock-size",
      `${scrollbarWidth}px`
    );
  }
}
__name(lockBodyScrolling, "lockBodyScrolling");
function unlockBodyScrolling(lockingEl) {
  locks.delete(lockingEl);
  if (locks.size === 0) {
    document.documentElement.classList.remove("scroll-lock");
    document.documentElement.style.removeProperty("--scroll-lock-size");
  }
}
__name(unlockBodyScrolling, "unlockBodyScrolling");
export {
  lockBodyScrolling,
  unlockBodyScrolling
};
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