67f5dfbe50
主要功能: - 修改RequirementModal支持12个订单班选择 - 添加OrderClassIconMap图标映射组件 - Store中添加selectedOrderClass状态管理 - WorkflowPage支持传递orderClass参数 - web_result添加URL参数切换功能 - 创建order-class-handler.js动态处理页面主题 技术改进: - 创建软链接关联订单班数据目录 - 生成wenlu.json和food.json数据结构 - 删除重复的web_result目录 - 添加测试页面test-order-class.html 影响范围: - 展会策划系统现支持12个订单班 - 结果展示页面自动适配不同订单班主题 - 用户可选择不同行业生成对应方案 🤖 Generated with Claude Code Co-Authored-By: Claude <noreply@anthropic.com>
dlv(obj, keypath) 
Safely get a dot-notated path within a nested object, with ability to return a default if the full key path does not exist or the value is undefined
Why?
Smallest possible implementation: only 130 bytes.
You could write this yourself, but then you'd have to write tests.
Supports ES Modules, CommonJS and globals.
Installation
npm install --save dlv
Usage
delve(object, keypath, [default])
import delve from 'dlv';
let obj = {
a: {
b: {
c: 1,
d: undefined,
e: null
}
}
};
//use string dot notation for keys
delve(obj, 'a.b.c') === 1;
//or use an array key
delve(obj, ['a', 'b', 'c']) === 1;
delve(obj, 'a.b') === obj.a.b;
//returns undefined if the full key path does not exist and no default is specified
delve(obj, 'a.b.f') === undefined;
//optional third parameter for default if the full key in path is missing
delve(obj, 'a.b.f', 'foo') === 'foo';
//or if the key exists but the value is undefined
delve(obj, 'a.b.d', 'foo') === 'foo';
//Non-truthy defined values are still returned if they exist at the full keypath
delve(obj, 'a.b.e', 'foo') === null;
//undefined obj or key returns undefined, unless a default is supplied
delve(undefined, 'a.b.c') === undefined;
delve(undefined, 'a.b.c', 'foo') === 'foo';
delve(obj, undefined, 'foo') === 'foo';
Setter Counterparts
- dset by @lukeed is the spiritual "set" counterpart of
dlvand very fast. - bury by @kalmbach does the opposite of
dlvand is implemented in a very similar manner.