postsvg: TS match and walk lack return-type annotation

[Ayc0]

When running the type check on my codebase, I have those 2 errors in postsvg:

node_modules/postsvg/postsvg.d.ts:74:5 - error TS7010: 'match', which lacks return-type annotation, implicitly has an 'any' return type.

74     match(expression: posthtml.Matcher, callback: (node: Node) => Node);
       ~~~~~

node_modules/postsvg/postsvg.d.ts:75:5 - error TS7010: 'walk', which lacks return-type annotation, implicitly has an 'any' return type.

75     walk(callback: (node: Node) => Node);
       ~~~~

This is because in postsvg.d.ts, there is no return type for both match and walk:

  class Tree extends Array {
    static createFromArray(array: Array): Tree;
    get root(): Node;
    toString(): string;
    clone(): Tree;
    match(expression: posthtml.Matcher, callback: (node: Node) => Node);
    walk(callback: (node: Node) => Node);
    select(selector: string): Node[];
    each(selector: string | TreeEachCallback, callack?: TreeEachCallback): Node[];
  }

An easy fix could be to do the following:

  class Tree extends Array {
    static createFromArray(array: Array): Tree;
    get root(): Node;
    toString(): string;
    clone(): Tree;
    match(expression: posthtml.Matcher, callback: (node: Node) => Node): void;
    walk(callback: (node: Node) => Node): void;
    select(selector: string): Node[];
    each(selector: string | TreeEachCallback, callack?: TreeEachCallback): Node[];
  }

But those 2 seems to be returning something (but I'm not sure what are the proper type)

Another easy fix could be:

  class Tree extends Array {
    static createFromArray(array: Array): Tree;
    get root(): Node;
    toString(): string;
    clone(): Tree;
    match(expression: posthtml.Matcher, callback: (node: Node) => Node): unknown;
    walk(callback: (node: Node) => Node): unknown;
    select(selector: string): Node[];
    each(selector: string | TreeEachCallback, callack?: TreeEachCallback): Node[];
  }

But this isn't ideal either.

I can do a PR if you want, but I don't know which type to choose 😕