WP_Dependencies::query( string $handle, string $status = ‘registered’ ): bool|_WP_Dependency

Source

public function query( $handle, $status = 'registered' ) {
	switch ( $status ) {
		case 'registered':
		case 'scripts': // Back compat.
			if ( isset( $this->registered[ $handle ] ) ) {
				return $this->registered[ $handle ];
			}
			return false;

		case 'enqueued':
		case 'queue': // Back compat.
			if ( in_array( $handle, $this->queue, true ) ) {
				return true;
			}
			return $this->recurse_deps( $this->queue, $handle );

		case 'to_do':
		case 'to_print': // Back compat.
			return in_array( $handle, $this->to_do, true );

		case 'done':
		case 'printed': // Back compat.
			return in_array( $handle, $this->done, true );
	}

	return false;
}

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