Javascript 将对象解析为 TS 类

我用lib https://www.npmjs.com/package/class-transformer解决了我的问题 代码如下:

enum TreeTypes {
    PINE = "pine",
    APPLETREE = "appleTree",
}

abstract class Tree {
    @Expose() public height: number;
    @Expose() public type: string;
}

class Pine extends Tree {
    @Expose() public height: number;
    @Expose() public needles: number;
}

class AppleTree extends Tree {
    @Expose() public height: number;
    @Expose() public apples: number;
    
    public getApples() {
        console.log(this.apples);
    }
}

class Forest {
    @Expose() square: number;
    
    @Type(() => Tree, {
        keepDiscriminatorProperty: true,
        discriminator: {
            property: 'type',
                subTypes: [
                { value: AppleTree, name: TreeTypes.APPLETREE },
                { value: Pine, name: TreeTypes.PINE },
            ],
        },
    })
    @Expose()
    trees: (Pine | AppleTree)[];

    @Expose() 
    getSquare() {
        console.log(this.square);
    }
}



export function initMyClass() {
    const forest: Forest = plainToClass(Forest, myObj, { excludeExtraneousValues: true, enableCircularCheck: true, exposeDefaultValues: true });
    console.log(forest);
    
}