Function initialize

static/editor.md/lib/mermaid/mermaid.js:8342–8347

()

  }

  function initialize() {
    var state = this.__brush || {selection: null};
    state.extent = number2(extent.apply(this, arguments));
    state.dim = dim;
    return state;
  }

  brush.extent = function(_) {
    return arguments.length ? (extent = typeof _ === "function" ? _ : Object(_constant_js__WEBPACK_IMPORTED_MODULE_5__["default"])(number2(_)), brush) : extent;