fix: remove unknown from walkTokens return types

src/Instance.ts

@@ -14,6 +14,7 @@ import type { MarkedExtension, MarkedOptions } from './MarkedOptions.ts';
 import type { Token, Tokens, TokensList } from './Tokens.ts';
 
 export type ResultCallback = (error: Error | null, parseResult?: string) => undefined | void;
+export type MaybePromise = void | Promise<void>;
 
 type UnknownFunction = (...args: unknown[]) => unknown;
 type GenericRendererFunction = (...args: unknown[]) => string | false;
@@ -42,8 +43,8 @@ export class Marked {
  /**
  * Run callback for every token
  */
- walkTokens <T = void>(tokens: Token[] | TokensList, callback: (token: Token) => T | T[]) {
- let values: T[] = [];
+ walkTokens(tokens: Token[] | TokensList, callback: (token: Token) => MaybePromise | MaybePromise[]) {
+ let values: MaybePromise[] = [];
  for (const token of tokens) {
  values = values.concat(callback.call(this, token));
  switch (token.type) {
@@ -215,7 +216,7 @@ export class Marked {
  const walkTokens = this.defaults.walkTokens;
  const packWalktokens = pack.walkTokens;
  opts.walkTokens = function(token) {
- let values: Array<Promise<void> | void | unknown> = [];
+ let values: MaybePromise[] = [];
  values.push(packWalktokens.call(this, token));
  if (walkTokens) {
  values = values.concat(walkTokens.call(this, token));

src/MarkedOptions.ts

@@ -173,7 +173,7 @@ export interface MarkedExtension {
  * Each token is passed by reference so updates are persisted when passed to the parser.
  * The return value of the function is ignored.
  */
- walkTokens?: ((token: Token) => void | unknown | Promise<void>) | undefined | null;
+ walkTokens?: ((token: Token) => void | Promise<void>) | undefined | null;
  /**
  * Generate closing slash for self-closing tags (<br/> instead of <br>)
  * @deprecated Deprecated in v5.0.0 use marked-xhtml to emit self-closing HTML tags for void elements (<br/>, <img/>, etc.) with a "/" as required by XHTML.
@@ -213,5 +213,5 @@ export interface MarkedOptions extends Omit<MarkedExtension, 'renderer' | 'token
  /**
  * walkTokens function returns array of values for Promise.all
  */
- walkTokens?: null | ((token: Token) => void | (unknown | Promise<void>)[]);
+ walkTokens?: null | ((token: Token) => void | Promise<void> | (void | Promise<void>)[]);
 }

src/marked.ts

@@ -13,7 +13,7 @@ import {
 } from './defaults.ts';
 import type { MarkedExtension, MarkedOptions } from './MarkedOptions.ts';
 import type { Token, TokensList } from './Tokens.ts';
-import type { ResultCallback } from './Instance.ts';
+import type { ResultCallback, MaybePromise } from './Instance.ts';
 
 const markedInstance = new Marked();
 
@@ -94,7 +94,7 @@ marked.use = function(...args: MarkedExtension[]) {
  * Run callback for every token
  */
 
-marked.walkTokens = function <T = void>(tokens: Token[] | TokensList, callback: (token: Token) => T | T[]) {
+marked.walkTokens = function(tokens: Token[] | TokensList, callback: (token: Token) => MaybePromise | MaybePromise[]) {
  return markedInstance.walkTokens(tokens, callback);
 };