Source

File: wp-includes/script-loader.php

function wp_default_packages_inline_scripts( $scripts ) {
	global $wp_locale;

	if ( isset( $scripts->registered['wp-api-fetch'] ) ) {
		$scripts->registered['wp-api-fetch']->deps[] = 'wp-hooks';
	}
	$scripts->add_inline_script(
		'wp-api-fetch',
		sprintf(
			'wp.apiFetch.use( wp.apiFetch.createRootURLMiddleware( "%s" ) );',
			esc_url_raw( get_rest_url() )
		),
		'after'
	);
	$scripts->add_inline_script(
		'wp-api-fetch',
		implode(
			"\n",
			array(
				sprintf(
					'wp.apiFetch.nonceMiddleware = wp.apiFetch.createNonceMiddleware( "%s" );',
					( wp_installing() && ! is_multisite() ) ? '' : wp_create_nonce( 'wp_rest' )
				),
				'wp.apiFetch.use( wp.apiFetch.nonceMiddleware );',
				'wp.apiFetch.use( wp.apiFetch.mediaUploadMiddleware );',
				sprintf(
					'wp.apiFetch.nonceEndpoint = "%s";',
					admin_url( 'admin-ajax.php?action=rest-nonce' )
				),
			)
		),
		'after'
	);
	$scripts->add_inline_script(
		'wp-data',
		implode(
			"\n",
			array(
				'( function() {',
				'	var userId = ' . get_current_user_ID() . ';',
				'	var storageKey = "WP_DATA_USER_" + userId;',
				'	wp.data',
				'		.use( wp.data.plugins.persistence, { storageKey: storageKey } );',
				'	wp.data.plugins.persistence.__unstableMigrate( { storageKey: storageKey } );',
				'} )();',
			)
		)
	);

	$scripts->add_inline_script(
		'wp-date',
		sprintf(
			'wp.date.setSettings( %s );',
			wp_json_encode(
				array(
					'l10n'     => array(
						'locale'        => get_user_locale(),
						'months'        => array_values( $wp_locale->month ),
						'monthsShort'   => array_values( $wp_locale->month_abbrev ),
						'weekdays'      => array_values( $wp_locale->weekday ),
						'weekdaysShort' => array_values( $wp_locale->weekday_abbrev ),
						'meridiem'      => (object) $wp_locale->meridiem,
						'relative'      => array(
							/* translators: %s: Duration. */
							'future' => __( '%s from now' ),
							/* translators: %s: Duration. */
							'past'   => __( '%s ago' ),
						),
					),
					'formats'  => array(
						/* translators: Time format, see https://www.php.net/date */
						'time'                => get_option( 'time_format', __( 'g:i a' ) ),
						/* translators: Date format, see https://www.php.net/date */
						'date'                => get_option( 'date_format', __( 'F j, Y' ) ),
						/* translators: Date/Time format, see https://www.php.net/date */
						'datetime'            => __( 'F j, Y g:i a' ),
						/* translators: Abbreviated date/time format, see https://www.php.net/date */
						'datetimeAbbreviated' => __( 'M j, Y g:i a' ),
					),
					'timezone' => array(
						'offset' => get_option( 'gmt_offset', 0 ),
						'string' => get_option( 'timezone_string', 'UTC' ),
					),
				)
			)
		),
		'after'
	);

	// Loading the old editor and its config to ensure the classic block works as expected.
	$scripts->add_inline_script(
		'editor',
		'window.wp.oldEditor = window.wp.editor;',
		'after'
	);
}