Remove src/lib/tln.ts file

src/lib/tln.ts

@@ -1,99 +0,0 @@
-type EventEntry = { evt: string; hdlr: EventListenerOrEventListenerObject };
-
-const eventMap = new WeakMap<HTMLTextAreaElement, EventEntry[]>();
-
-const updateLineNumbers = (ta: HTMLTextAreaElement, wrapper: HTMLElement) => {
-  const lineCount = ta.value.split("\n").length;
-  const childCount = wrapper.children.length;
-  let difference = lineCount - childCount;
-
-  if (difference > 0) {
-    const fragment = document.createDocumentFragment();
-    while (difference > 0) {
-      const line = document.createElement("span");
-      line.className = "tln-line";
-      fragment.appendChild(line);
-      difference -= 1;
-    }
-    wrapper.appendChild(fragment);
-  }
-
-  while (difference < 0) {
-    if (!wrapper.lastChild) break;
-    wrapper.removeChild(wrapper.lastChild);
-    difference += 1;
-  }
-};
-
-export const appendLineNumbers = (ta: HTMLTextAreaElement) => {
-  if (!ta || ta.classList.contains("tln-active")) return;
-  const parent = ta.parentNode;
-  if (!parent) return;
-
-  ta.classList.add("tln-active");
-
-  const wrapper = document.createElement("div");
-  wrapper.className = "tln-wrapper";
-  parent.insertBefore(wrapper, ta);
-  updateLineNumbers(ta, wrapper);
-
-  const listeners: EventEntry[] = [];
-  eventMap.set(ta, listeners);
-
-  const changeEvents = ["propertychange", "input", "keydown", "keyup"];
-  const changeHandler = (event: Event) => {
-    const keyEvent = event as KeyboardEvent;
-    if (
-      (+ta.scrollLeft === 10 &&
-        (keyEvent.key === "ArrowLeft" || keyEvent.code === "ArrowLeft")) ||
-      keyEvent.key === "Home" ||
-      keyEvent.code === "Home" ||
-      keyEvent.key === "Enter" ||
-      keyEvent.code === "Enter" ||
-      keyEvent.code === "NumpadEnter"
-    ) {
-      ta.scrollLeft = 0;
-    }
-    updateLineNumbers(ta, wrapper);
-  };
-
-  for (const evt of changeEvents) {
-    ta.addEventListener(evt, changeHandler);
-    listeners.push({ evt, hdlr: changeHandler });
-  }
-
-  const scrollEvents = ["change", "mousewheel", "scroll"];
-  const scrollHandler = () => {
-    wrapper.scrollTop = ta.scrollTop;
-  };
-
-  for (const evt of scrollEvents) {
-    ta.addEventListener(evt, scrollHandler);
-    listeners.push({ evt, hdlr: scrollHandler });
-  }
-};
-
-export const refreshLineNumbers = (ta: HTMLTextAreaElement) => {
-  if (!ta || !ta.classList.contains("tln-active")) return;
-  const wrapper = ta.previousSibling;
-  if (!wrapper || !(wrapper as HTMLElement).classList?.contains("tln-wrapper")) return;
-  updateLineNumbers(ta, wrapper as HTMLElement);
-};
-
-export const removeLineNumbers = (ta: HTMLTextAreaElement) => {
-  if (!ta || !ta.classList.contains("tln-active")) return;
-  ta.classList.remove("tln-active");
-
-  const wrapper = ta.previousSibling;
-  if (wrapper && (wrapper as HTMLElement).classList?.contains("tln-wrapper")) {
-    (wrapper as HTMLElement).remove();
-  }
-
-  const listeners = eventMap.get(ta);
-  if (listeners) {
-    for (const { evt, hdlr } of listeners) {
-      ta.removeEventListener(evt, hdlr);
-    }
-    eventMap.delete(ta);
-  }
-};