webln.ts

interface WebLNProvider {
  getInfo;
  sendPayment;
  makeInvoice;
  signMessage;
  verifyMessage;
}

type WebLNMethod = { [k in keyof WebLNProvider]: k };

type MethodHandler<Field extends keyof Methods, Methods extends any> = (data: {
  method: Field;
  args: Parameters<Methods[Field]>;
}) => ReturnType<Methods[Field]>;

export type FallbackMethodHandler2 = {
  [K in keyof WebLNMethod]: MethodHandler<K, WebLNProvider>
}[keyof WebLNMethod];

export type FallbackMethodHandler3 = {
  [K in keyof WebLNProvider]: (data: {
    method: K;
    args: Parameters<WebLNProvider[K]>;
  }) => ReturnType<WebLNProvider[K]>
}[keyof WebLNProvider];

export type FallbackMethodHandler = {
  (data: {
    method: WebLNMethod["getInfo"];
    args: Parameters<WebLNProvider["getInfo"]>;
  }): ReturnType<WebLNProvider["getInfo"]>;

  (data: {
    method: WebLNMethod["sendPayment"];
    args: Parameters<WebLNProvider["sendPayment"]>;
  }): ReturnType<WebLNProvider["sendPayment"]>;

  (data: {
    method: WebLNMethod["makeInvoice"];
    args: Parameters<WebLNProvider["makeInvoice"]>;
  }): ReturnType<WebLNProvider["makeInvoice"]>;

  (data: {
    method: WebLNMethod["signMessage"];
    args: Parameters<WebLNProvider["signMessage"]>;
  }): ReturnType<WebLNProvider["signMessage"]>;

  (data: {
    method: WebLNMethod["verifyMessage"];
    args: Parameters<WebLNProvider["verifyMessage"]>;
  }): ReturnType<WebLNProvider["verifyMessage"]>;
};