stream-chat-react-native-core/lib/module/theme/topologicalResolution.js

The official React Native and Expo components for Stream Chat, a service for building chat applications

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.resolveTokensTopologically = void 0;
var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));
var isPlainObject = value => {
  return typeof value === 'object' && value !== null && value.constructor === Object;
};
var resolveTokensTopologically = dictionary => {
  var resolvedMemo = new Map();
  var visiting = new Set();
  var resolveValueDeep = value => {
    if (typeof value === 'string' && value.startsWith('$')) {
      return dfs(value.slice(1), value);
    }
    if (Array.isArray(value)) return value.map(resolveValueDeep);
    if (isPlainObject(value)) {
      var out = {};
      for (var _ref of Object.entries(value)) {
        var _ref2 = (0, _slicedToArray2.default)(_ref, 2);
        var k = _ref2[0];
        var v = _ref2[1];
        out[k] = resolveValueDeep(v);
      }
      return out;
    }
    return value;
  };
  var dfs = (tokenKeyOrPath, originalRef) => {
    var cacheKey = tokenKeyOrPath;
    if (resolvedMemo.has(cacheKey)) return resolvedMemo.get(cacheKey);
    if (visiting.has(cacheKey)) {
      throw new Error(`Cycle detected while topo-evaluating "${originalRef}" (at "${cacheKey}")`);
    }
    visiting.add(cacheKey);
    var raw = dictionary[tokenKeyOrPath];
    if (raw === undefined) {
      throw new Error(`Unresolved reference: "${originalRef}" (missing "${tokenKeyOrPath}")`);
    }
    var fullyResolved = resolveValueDeep(raw);
    resolvedMemo.set(cacheKey, fullyResolved);
    visiting.delete(cacheKey);
    return fullyResolved;
  };
  return resolveValueDeep(dictionary);
};
exports.resolveTokensTopologically = resolveTokensTopologically;
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