Working on API surface.

packages/js/core/dist/document.js

@@ -1,14 +1,42 @@
-import { parseLine as a, LineData as o } from "./parser.js";
-function f(u, i = " ") {
-  let e = null, n = o(), t = !1;
-  async function r() {
-    return e = await u(), e === null ? t = !0 : a(e, n, i), { line: e, lineData: n, ended: t, next: r, current: l };
-  }
-  function l() {
-    return { line: e, lineData: n, ended: t, next: r, current: l };
-  }
-  return { next: r, current: l };
+import { parseLine as f, createLineData as s } from "./parser.js";
+function d(t, l = " ") {
+  let n = s(null, l);
+  const i = {
+    ended: !1,
+    clone() {
+      return d(t.clone(), l);
+    },
+    async next() {
+      if (n.line = await t.next(), n.line === null)
+        return !0;
+      f(n);
+    },
+    current() {
+      return i;
+    },
+    line() {
+      var e;
+      return (e = n.line) == null ? void 0 : e.slice(n.offsetHead);
+    },
+    head() {
+      var e;
+      return (e = n.line) == null ? void 0 : e.slice(n.offsetHead, n.offsetTail);
+    },
+    tail() {
+      var e;
+      return (e = n.line) == null ? void 0 : e.slice(n.offsetTail);
+    },
+    async content(e = -1, r = []) {
+      var u;
+      return e === -1 && (e = n.level + 1), await i.next() || n.level < e ? r.join(`
+`) : (r.push(((u = n.line) == null ? void 0 : u.slice(e)) || ""), i.content(e, r));
+    },
+    async seek(e, r = -1) {
+      return r === -1 && (r = n.level), await i.next() ? !1 : i.head() === e ? i : n.level < r ? !1 : i.seek(e, r);
+    }
+  };
+  return i;
 }
 export {
-  f as document
+  d as useDocument
 };