next-csrf/example/node_modules/styled-jsx/dist/stylesheet-registry.js

CSRF mitigation library for Next.js

"use strict";

exports.__esModule = true;
exports["default"] = void 0;

var _stringHash = _interopRequireDefault(require("string-hash"));

var _stylesheet = _interopRequireDefault(require("./lib/stylesheet"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var sanitize = function sanitize(rule) {
  return rule.replace(/\/style/gi, '\\/style');
};

var StyleSheetRegistry =
/*#__PURE__*/
function () {
  function StyleSheetRegistry(_temp) {
    var _ref = _temp === void 0 ? {} : _temp,
        _ref$styleSheet = _ref.styleSheet,
        styleSheet = _ref$styleSheet === void 0 ? null : _ref$styleSheet,
        _ref$optimizeForSpeed = _ref.optimizeForSpeed,
        optimizeForSpeed = _ref$optimizeForSpeed === void 0 ? false : _ref$optimizeForSpeed,
        _ref$isBrowser = _ref.isBrowser,
        isBrowser = _ref$isBrowser === void 0 ? typeof window !== 'undefined' : _ref$isBrowser;

    this._sheet = styleSheet || new _stylesheet["default"]({
      name: 'styled-jsx',
      optimizeForSpeed: optimizeForSpeed
    });

    this._sheet.inject();

    if (styleSheet && typeof optimizeForSpeed === 'boolean') {
      this._sheet.setOptimizeForSpeed(optimizeForSpeed);

      this._optimizeForSpeed = this._sheet.isOptimizeForSpeed();
    }

    this._isBrowser = isBrowser;
    this._fromServer = undefined;
    this._indices = {};
    this._instancesCounts = {};
    this.computeId = this.createComputeId();
    this.computeSelector = this.createComputeSelector();
  }

  var _proto = StyleSheetRegistry.prototype;

  _proto.add = function add(props) {
    var _this = this;

    if (undefined === this._optimizeForSpeed) {
      this._optimizeForSpeed = Array.isArray(props.children);

      this._sheet.setOptimizeForSpeed(this._optimizeForSpeed);

      this._optimizeForSpeed = this._sheet.isOptimizeForSpeed();
    }

    if (this._isBrowser && !this._fromServer) {
      this._fromServer = this.selectFromServer();
      this._instancesCounts = Object.keys(this._fromServer).reduce(function (acc, tagName) {
        acc[tagName] = 0;
        return acc;
      }, {});
    }

    var _this$getIdAndRules = this.getIdAndRules(props),
        styleId = _this$getIdAndRules.styleId,
        rules = _this$getIdAndRules.rules; // Deduping: just increase the instances count.


    if (styleId in this._instancesCounts) {
      this._instancesCounts[styleId] += 1;
      return;
    }

    var indices = rules.map(function (rule) {
      return _this._sheet.insertRule(rule);
    }) // Filter out invalid rules
    .filter(function (index) {
      return index !== -1;
    });
    this._indices[styleId] = indices;
    this._instancesCounts[styleId] = 1;
  };

  _proto.remove = function remove(props) {
    var _this2 = this;

    var _this$getIdAndRules2 = this.getIdAndRules(props),
        styleId = _this$getIdAndRules2.styleId;

    invariant(styleId in this._instancesCounts, "styleId: `" + styleId + "` not found");
    this._instancesCounts[styleId] -= 1;

    if (this._instancesCounts[styleId] < 1) {
      var tagFromServer = this._fromServer && this._fromServer[styleId];

      if (tagFromServer) {
        tagFromServer.parentNode.removeChild(tagFromServer);
        delete this._fromServer[styleId];
      } else {
        this._indices[styleId].forEach(function (index) {
          return _this2._sheet.deleteRule(index);
        });

        delete this._indices[styleId];
      }

      delete this._instancesCounts[styleId];
    }
  };

  _proto.update = function update(props, nextProps) {
    this.add(nextProps);
    this.remove(props);
  };

  _proto.flush = function flush() {
    this._sheet.flush();

    this._sheet.inject();

    this._fromServer = undefined;
    this._indices = {};
    this._instancesCounts = {};
    this.computeId = this.createComputeId();
    this.computeSelector = this.createComputeSelector();
  };

  _proto.cssRules = function cssRules() {
    var _this3 = this;

    var fromServer = this._fromServer ? Object.keys(this._fromServer).map(function (styleId) {
      return [styleId, _this3._fromServer[styleId]];
    }) : [];

    var cssRules = this._sheet.cssRules();

    return fromServer.concat(Object.keys(this._indices).map(function (styleId) {
      return [styleId, _this3._indices[styleId].map(function (index) {
        return cssRules[index].cssText;
      }).join(_this3._optimizeForSpeed ? '' : '\n')];
    }) // filter out empty rules
    .filter(function (rule) {
      return Boolean(rule[1]);
    }));
  }
  /**
   * createComputeId
   *
   * Creates a function to compute and memoize a jsx id from a basedId and optionally props.
   */
  ;

  _proto.createComputeId = function createComputeId() {
    var cache = {};
    return function (baseId, props) {
      if (!props) {
        return "jsx-" + baseId;
      }

      var propsToString = String(props);
      var key = baseId + propsToString; // return `jsx-${hashString(`${baseId}-${propsToString}`)}`

      if (!cache[key]) {
        cache[key] = "jsx-" + (0, _stringHash["default"])(baseId + "-" + propsToString);
      }

      return cache[key];
    };
  }
  /**
   * createComputeSelector
   *
   * Creates a function to compute and memoize dynamic selectors.
   */
  ;

  _proto.createComputeSelector = function createComputeSelector(selectoPlaceholderRegexp) {
    if (selectoPlaceholderRegexp === void 0) {
      selectoPlaceholderRegexp = /__jsx-style-dynamic-selector/g;
    }

    var cache = {};
    return function (id, css) {
      // Sanitize SSR-ed CSS.
      // Client side code doesn't need to be sanitized since we use
      // document.createTextNode (dev) and the CSSOM api sheet.insertRule (prod).
      if (!this._isBrowser) {
        css = sanitize(css);
      }

      var idcss = id + css;

      if (!cache[idcss]) {
        cache[idcss] = css.replace(selectoPlaceholderRegexp, id);
      }

      return cache[idcss];
    };
  };

  _proto.getIdAndRules = function getIdAndRules(props) {
    var _this4 = this;

    var css = props.children,
        dynamic = props.dynamic,
        id = props.id;

    if (dynamic) {
      var styleId = this.computeId(id, dynamic);
      return {
        styleId: styleId,
        rules: Array.isArray(css) ? css.map(function (rule) {
          return _this4.computeSelector(styleId, rule);
        }) : [this.computeSelector(styleId, css)]
      };
    }

    return {
      styleId: this.computeId(id),
      rules: Array.isArray(css) ? css : [css]
    };
  }
  /**
   * selectFromServer
   *
   * Collects style tags from the document with id __jsx-XXX
   */
  ;

  _proto.selectFromServer = function selectFromServer() {
    var elements = Array.prototype.slice.call(document.querySelectorAll('[id^="__jsx-"]'));
    return elements.reduce(function (acc, element) {
      var id = element.id.slice(2);
      acc[id] = element;
      return acc;
    }, {});
  };

  return StyleSheetRegistry;
}();

exports["default"] = StyleSheetRegistry;

function invariant(condition, message) {
  if (!condition) {
    throw new Error("StyleSheetRegistry: " + message + ".");
  }
}