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in Technique[技术] by (31.9m points)

ts如何声明对内置对象的扩展方法

老项目迁移.有些库对Math进行了扩展,添加了add,sub等方法.
用的地方太多,ts-ignore不够用啊

进行了的尝试

  1. 添加types/index.d.ts,进行如下声明
export type MathExt = {
  add(number1: number, number2: number): number;
  // ...
};

export declare var Math: Math & MathExt;

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by (31.9m points)

找到文档已解决
根目录添加types/index.d.ts

declare global {
  interface Math {
    add(number1: number, number2: number): number;
    // ...
  }
}

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