Source

File: wp-includes/class.wp-scripts.php

public function print_inline_script( $handle, $position = 'after', $echo = true ) {
		$output = $this->get_data( $handle, $position );

		if ( empty( $output ) ) {
			return false;
		}

		$output = trim( implode( "\n", $output ), "\n" );

		if ( $echo ) {
			printf( "<script%s id='%s-js-%s'>\n%s\n</script>\n", $this->type_attr, esc_attr( $handle ), esc_attr( $position ), $output );
		}

		return $output;
	}