接口声明

Question

Type Definitions file for d3-scale模块中有以下代码。

export interface ScaleLinear<Range, Output> {
    (value: number | { valueOf(): number }): Output;
    /**
    * Important: While value should come out of range R, this is method is only applicable to
    * values that can be coerced to numeric. Otherwise, returns NaN
    */
    invert(value: number | { valueOf(): number }): number;
    domain(): Array<number>;
    domain(domain: Array<number | { valueOf(): number }>): this;
    range(): Array<Range>;
    range(range: Array<Range>): this;
    /**
    * Important: While value should come out of range R, this is method is only applicable to
    * values that can be coerced to numeric.
    */
    rangeRound(range: Array<number | { valueOf(): number }>): this;
    clamp(): boolean;
    clamp(clamp: boolean): ScaleLinear<Range, Output>;
    interpolate(): InterpolatorFactory<any, any>;
    interpolate(interpolate: InterpolatorFactory<Range, Output>): this;
    interpolate<NewOutput>(interpolate: InterpolatorFactory<Range, NewOutput>): ScaleLinear<Range, NewOutput>;
    ticks(count?: number): Array<number>;
    tickFormat(count?: number, specifier?: string): ((d: number | { valueOf(): number }) => string);
    nice(count?: number): this;
    copy(): ScaleLinear<Range, Output>;
}

我对界面名称后的尖括号<Range, Output>感到困惑！我在TypeScript上观看了PluralSight课程，并没有提到这种语法。

更重要的是，当我尝试在我自己的代码中使用它时，VS Code告诉我：

我知道我的/// ref<>和import陈述的方式是正确的，因为它不会抱怨其他内容（例如d3Scale.ScalePoint<string>）

我做错了什么？任何澄清将不胜感激。