wp-includes/rest-api.php:1776Stabilizes a value following JSON Schema semantics.
$valuemixedmixedfunction rest_stabilize_value( $value ) { if ( is_scalar( $value ) || is_null( $value ) ) { return $value; } if ( is_object( $value ) ) { _doing_it_wrong( __FUNCTION__, __( 'Cannot stabilize objects. Convert the object to an array first.' ), '5.5.0' ); return $value; } ksort( $value ); foreach ( $value as $k => $v ) { $value[ $k ] = rest_stabilize_value( $v ); } return $value;}Introduced in 5.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/rest-api.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.