@antv/f-engine/lib/createContext.js

FEngine 是 AntV F 系列可视化引擎的底层渲染引擎，为移动端提供了一套完整的渲染、事件、动画能力，能方便的构建可视化 UI

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = createContext;
var _tslib = require("tslib");
function createContext(defaultValue) {
  // 创建 Context 对象
  var context = {
    _currentValue: defaultValue
  };
  // 定义 Provider 组件
  var Provider = function Provider(_a) {
    var value = _a.value,
      children = _a.children;
    context._currentValue = value;
    return children;
  };
  // Injecter 可以往全局的 context 注入内容
  var Injecter = function Injecter(_a, context) {
    var children = _a.children,
      props = (0, _tslib.__rest)(_a, ["children"]);
    Object.assign(context, props);
    return children;
  };
  Injecter.contextInjecter = context;
  // 定义 Consumer 组件
  var Consumer = function Consumer(_a) {
    var children = _a.children;
    return children(context._currentValue);
  };
  context.Provider = Provider;
  context.Injecter = Injecter;
  context.Consumer = Consumer;
  return context;
}