TypeScript-声明合并

interface TestInterface {
    name: string;
}

interface TestInterface {
    age: number;
}

class Person implements TestInterface {
    name: string;
    age: number;
}

let person = new Person();
person.name = "yangbuyiya";
person.age = 18;
console.log(person);

interface TestInterface {
    name: string;
}

interface TestInterface {
    name: number;
}

interface TestInterface {
    getValue(value: number): number;
}

interface TestInterface {
    getValue(value: string): number;
}

let obj: TestInterface = {
    getValue(value: any): number {
        if (typeof value === 'string') {
            return value.length;
        } else {
            return value.toFixed();
        }
    }
}
console.log(obj.getValue("abcdef"));
console.log(obj.getValue(3.14));

namespace Validation {
    export let name: string = 'yangbuyiya';
}
namespace Validation {
    export let age: number = 18;
}
console.log(Validation.name);
console.log(Validation.age);

namespace Validation {
    export let name: string = 'yangbuyiya';
    export let say = () => "abc";
}
namespace Validation {
    export let name: string = 'zs';
    export let say = () => "abc";
}

namespace Validation {
    let name: string = 'yangbuyiya';
}
namespace Validation {
    export let say = () => {
        console.log(`name = ${name}`);
    };
}
Validation.say();

class Person {
    say(): void {
        console.log('hello world');
    }
}

namespace Person {
    export const hi = (): void => {
        console.log('hi');
    }
}
console.dir(Person);

function getCounter() {
    getCounter.count++;
    console.log(getCounter.count);
}

namespace getCounter {
    export let count: number = 0;
}

getCounter();

enum Gender {
    Male,
    Female
}

namespace Gender {
    export const Yao: number = 666;
}
console.log(Gender);