function* fibonacciSquence() {
  let x = 0,
    y = 1;
  for (;;) {
    yield y;
    [x, y] = [y, x + y];
  }
}

const fibonacci = (n: number) => {
  const arr = new Uint8Array(n + 1);
  let x = 0;
  for (const i of fibonacciSquence()) {
    arr[x++] = i;
    if (n-- <= 0) return arr;
  }
};

console.log(fibonacci(10));

git config --global user.name "DefectingCat"
git config --global user.email i@defect.ink
git config --global user.signingkey 408045F001DF0A9DDFE528C5E011C31AC42BEB98
git config --global commit.gpgsign true
git config --global tag.forcesignannotated true

// "typescript": "~4.1.5"
type Debounce = {
  <T extends unknown[]>(fn: (...arg: T) => void | unknown, ms: number): (
    this: unknown,
    ...arg: T
  ) => void | unknown;
};

/**
 * debounce function wrapper
 *
 * @param {function} fn debounced function
 * @param {number} ms delay millisecond
 * @return {function} wrapper
 *
 */
export const debounce: Debounce = (fn, ms) => {
  let timer: number | null = null;
  // 需要为this注解类型
  return function (...args) {

type Debounce = {
  <T extends unknown[], R>(fn: (...arg: T) => R, ms: number): (
    this: unknown,
    ...arg: T
  ) => void;
};

/**
 * debounce function wrapper
 */
export const debounce: Debounce = (fn, ms) => {
  let timer: NodeJS.Timer;
  return function (...args) {
    clearTimeout(timer);
    timer = setTimeout(() => {
      fn.apply(this, args);
    }, ms);
  };
};

404: Not Found

let obj = {
    a: "xfy",
    b: {
        c: "test",
    },
    d: 123,
    e: [1, 2, 3, 4, 5],
    f: {
        g: 'array',
        h: [1, 2, 3, 4, 5, 6, {
            i: '嘤嘤嘤'
        }]
    }
};
let test = {};

function deepCopy(origin, target) {
    target = target || {};

    let sw = {

function fibonacci(num) {
    let count = 0;
    let result = [1, 1];
    if (num <= 1) {
        return result;
    }
    let n = num - 2;
    for (let i = 0; i < n; i++) {
        result.push(result[count] + result[count + 1]);
        count++;
    }
    return result;
    // let rs = result.reduce((a, b) => a + b);
    // return rs;
}

let xfy = (() => {
    let name = 'xfy';
    let age = 18;
    let obj = {};
    Object.defineProperty(obj, 'test', {
        get: function () {
            return name + ' : ' + age;
        },
        set: function (value) {
            name = value;
            age++;
        }
    })
    return obj;
})();

Array.prototype.unique = function () {
    let x,
        y;
    let uni = {};
    for (x of this) {
        uni[x] = 'xfy';
    }
    let arr = Object.keys(uni);
    return arr;
}

Array.prototype.unique = function () {
    let temp = {},
        arr = [];
    let len = this.length;
    for (let i = 0; i < len; i++) {
        if(!temp[this[i]]) {
            temp[this[i]] = 'xfy';
            arr.push(this[i]);
        }

// 不完善
Array.prototype.unique = function () {
    let arr = [],
        x,
        y;
    for (x of this) {
        if (y === x) continue;
        arr.push(x);
        y = x;
    }
    return arr;
}
let arr = [1, 2, 2, 2, 3, 3, 4, 5, 6, 6, 7, 8, 9, 9, 'a', 'a', 'a', 'b', 'b', 'b', 'c'];
arr.unique();

// new
function type(target) {
    let temp = {
        "[object String]": 'ObjectString',
        "[object Number]": 'ObejctNumber',
        "[object Array]": 'Array',
        "[object RegExp]": 'RegExp',
        "[object Date]": 'Date'
    }
    if (target === null) {
        return 'null';
    }
    if (typeof(target) == 'object') {
        let str = Object.prototype.toString.call(target);
        return temp[str];
    } else {
        return typeof(target);
    }
}

// 字符串 数字(new Number()) boolean 对象 数组 函数  null undefined RegExp Date
function type(target) {
    let tos = Object.prototype.toString.call(target);
    switch (tos) {
        case "[object String]":
            return 'String';
        case "[object Number]":
            if (typeof(target) === "number") {
                return 'Number';
            } else {
                return 'Object Number';
            }
        case "[object Boolean]":
            return 'Boolean';
        case "[object Object]":
            return 'Object';
        case "[object Array]":
            return 'Array';
        case "[object Function]":
            return 'Function';

let arr = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'];
function shuffle(arr) {
    let cac;
    let len = arr.length - 1;
    let ran;
    for (let i = 0; i < len; i++) {
        // 保存当前位
        cac = arr[i];
        // 剩下位的随机抽取
        ran = Math.floor(Math.random() * (len - i + 1) + i);
        // 将随机抽取的位与当前位替换
        arr[i] = arr[ran];
        arr[ran] = cac;
    }
}
shuffle(arr);
console.log(arr.length);

// arr.sort();