text: import { vnode } from './vnode';
  import * as is from './is';
  function addNS(data, children, sel) {
      data.ns = 'http://www.w3.org/2000/svg';
      if (sel !== 'foreignObject' && children !== undefined) {
          for (let i = 0; i < children.length; ++i) {
              let childData = children[i].data;
              if (childData !== undefined) {
                  addNS(childData, children[i].children, children[i].sel);
              }
          }
      }
  }
  export function h(sel, b, c) {
      var data = {}, children, text, i;
      if (c !== undefined) {
          data = b;
          if (is.array(c)) {
              children = c;
          }
          else if (is.primitive(c)) {
              text = c;
          }
          else if (c && c.sel) {
              children = [c];
          }
      }
      else if (b !== undefined) {
          if (is.array(b)) {
              children = b;
          }
          else if (is.primitive(b)) {
              text = b;
          }
          else if (b && b.sel) {
              children = [b];
          }
          else {
              data = b;
          }
      }
      if (children !== undefined) {
          for (i = 0; i < children.length; ++i) {
              if (is.primitive(children[i]))
                  children[i] = vnode(undefined, undefined, undefined, children[i], undefined);
          }
      }
      if (sel[0] === 's' && sel[1] === 'v' && sel[2] === 'g' &&
          (sel.length === 3 || sel[3] === '.' || sel[3] === '#')) {
          addNS(data, children, sel);
      }
      return vnode(sel, data, children, text, undefined);
  }
  ;
  export default h;
  