wp-includes/author-template.php:312Displays the number of posts by the author of the current post.
function the_author_posts() { echo get_the_author_posts();}Introduced in 0.71. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/author-template.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.