Unable to use with Typescript without @json-schema-tools/meta-schema also being installed

[gpoole]

Describe the bug
Typescript users get type errors trying to use traverse due to JSONSchema not being available, since @json-schema-tools/meta-schema is only a devDependency of this package and the JSONSchema type doesn't seem to get bundled.

To Reproduce
Steps to reproduce the behavior:

1. Install @json-schema-tools/traverse
2. Attempt to write some trivial typescript transformer code such as:

   traverse(schema, (schemaOrSubschema) => {
      return schemaOrSubschema;
   });

3. A type error is shown against the return type

Installing @json-schema-tools/meta-schema fixes the issue as the JSONSchema type is provided by it.

Expected behavior
I think this package should declare @json-schema-tools/meta-schema as either a peer dependency or regular dependency.