@jsdocs-io/extractor/dist/get-package-overview.js

The API extractor for npm packages powering jsdocs.io

import { SyntaxKind } from "ts-morph";
export function getPackageOverview(indexFile) {
    return indexFile
        .getDescendantsOfKind(SyntaxKind.JSDocTag)
        .find((tag) => tag.getTagName() === "packageDocumentation")
        ?.getParentIfKind(SyntaxKind.JSDoc)
        ?.getText();
}