增加yeild和json-scheme

package.json

@@ -16,6 +16,7 @@
     "@metalsmith/layouts": "^2.7.0",
     "@metalsmith/markdown": "^1.10.0",
     "@metalsmith/permalinks": "^3.0.1",
+    "ajv": "^8.16.0",
     "chalk": "^5.3.0",
     "commander": "^12.1.0",
     "gogocode": "^1.0.55",

src/frontend/javascript/js/generator.js

@@ -0,0 +1,15 @@
+function getValue() {
+  let values = []
+  let value1 = fetch('http://baidu.com').then(res => {
+    values.push(res)
+    yield res;
+  })
+    .then(res => {
+      console.log('res', res);
+    })
+    .catch(err2 => {
+      console.log('err2', err2)
+    })
+}
+
+getValue()

src/frontend/javascript/js/yeild.js

@@ -0,0 +1,21 @@
+let outValue = 0, outStep = 0;
+function* counter(value) {
+  let step;
+
+  while (true) {
+    outStep = step = yield value++;
+    outValue = value
+    if (step) {
+      value += step;
+    }
+  }
+}
+
+const generatorFunc = counter(0);
+console.log(generatorFunc.next().value); // 0
+console.log(generatorFunc.next().value); // 1
+console.log(generatorFunc.next().value); // 2
+console.log(generatorFunc.next().value); // 3
+console.log(generatorFunc.next(10).value); // 14
+console.log(generatorFunc.next().value); // 15
+console.log(generatorFunc.next(10).value); // 26

src/frontend/javascript/yeild.md

@@ -0,0 +1,27 @@
+# yeild
+
+就是程序执行到yeild的时候，会执行yeild后面跟着的表达式，然后立即返回值{value: 表达式值, done: true | false}。   
+等到下次再调用next(param)时，param将会作为`yeild 表达式`的返回值，可以通过`variable = yeild 表达式`获取param值，然后继续往下执行；
+直接调用next(), `yeild 表达式`的返回值为undefined；
+
+``` javascript
+function* counter(value) {
+  let step;
+
+  while (true) {
+    step = yield value++;    // 每次都执行yeild后面的value++之后停止，下次调用next(param)的时候通过step获取param值。然后往下执行，碰到yeild又会暂停，没碰到yeild则done为true
+    if (step) {
+      value += step;
+    }
+  }
+}
+
+const generatorFunc = counter(0);                       // 这里并没有调用函数
+console.log(generatorFunc.next().value); // 0           // 这里调用next之后才开始调用函数
+console.log(generatorFunc.next().value); // 1
+console.log(generatorFunc.next().value); // 2
+console.log(generatorFunc.next().value); // 3
+console.log(generatorFunc.next(10).value); // 14
+console.log(generatorFunc.next().value); // 15
+console.log(generatorFunc.next(10).value); // 26
+```

src/frontend/json-scheme/index.js

@@ -0,0 +1,26 @@
+// Node.js require:
+const Ajv = require("ajv")
+
+const ajv = new Ajv() // options can be passed, e.g. {allErrors: true}
+
+const schema = {
+  // $schema: "https://json-schema.org/draft/2020-12/schema",
+  type: "object",
+  properties: {
+    foo: {type: "integer", "$comment": "Created by John Doe"},
+    bar: {type: "string"},
+    date1: {type: "string", pattern: "\\d*-\\d*-\\d*"}
+  },
+  required: ["foo"],
+  additionalProperties: false,
+}
+
+const data = {
+  foo: 1,
+  bar: "abc",
+  date1: "2019-12-12"
+}
+
+const validate = ajv.compile(schema)
+const valid = validate(data)
+if (!valid) console.log(validate.errors)

src/frontend/json-scheme/index.md

@@ -0,0 +1,24 @@
+# json-scheme json语义化语法
+[官方介绍文档链接](https://json-schema.org/learn/getting-started-step-by-step)
+
+[实现库](https://json-schema.org/implementations#validators-javascript)有很多，比如ajv
+
+## 总结
+1. 必须在type定义类型，以下为所有可用类型   
+string
+number
+integer
+object
+array
+boolean
+null
+
+2. 对于每一类型，都有对应的扩展属性。   
+比如{type: "string"},可以加上pattern或者format或者minLength来额外定义string。   
+{type: "number"},可以加Multiples来定义基础倍数      
+{type: "object"},可以加properties定义属性，以及additionalProperties表示是否可冗余属性
+
+3. 通用属性   
+注释 $comment      
+枚举 "enum": ["red", "amber", "green"]    
+常量 "const": "United States of America"

src/frontend/library/typescript/decorator.ts

@@ -0,0 +1,25 @@
+function first(a, b, c) {
+  console.log("first(): factory evaluated", a, b, c);
+  return function (target: any, propertyKey: string, descriptor: PropertyDescriptor) {
+    console.log("first(): called");
+  };
+}
+
+function second() {
+  console.log("second(): factory evaluated");
+  return function (target: any, propertyKey: string, descriptor: PropertyDescriptor) {
+    console.log("second(): called");
+  };
+}
+
+function sealed(constructor: Function) {
+  Object.seal(constructor);
+  Object.seal(constructor.prototype);
+}
+
+@sealed
+class ExampleClass {
+  @first(1, 2,3)
+  @second()
+  methodFn1() {}
+}

src/frontend/vscode/debug/tsconfig.json → src/frontend/library/typescript/tsconfig.json

@@ -3,6 +3,7 @@
     "target": "ES5",
     "module": "CommonJS",
     "outDir": "out",
-    "sourceMap": true
+    "sourceMap": true,
+    "experimentalDecorators": true
   }
 }

tsconfig.json

@@ -3,6 +3,7 @@
     "target": "ES5",
     "module": "CommonJS",
     "outDir": "out",
-    "sourceMap": true
+    "sourceMap": true,
+    "experimentalDecorators": true
   }
 }