https://www.libriincantina.it/wp-includes/js/api-request.js?ver=7.1.2

1/**
2 * Thin jQuery.ajax wrapper for WP REST API requests.
3 *
4 * Currently only applies to requests that do not use the `wp-api.js` Backbone
5 * client library, though this may change.  Serves several purposes:
6 *
7 * - Allows overriding these requests as needed by customized WP installations.
8 * - Sends the REST API nonce as a request header.
9 * - Allows specifying only an endpoint namespace/path instead of a full URL.
10 *
11 * @since 4.9.0
12 * @since 5.6.0 Added overriding of the "PUT" and "DELETE" methods with "POST".
13 *              Added an "application/json" Accept header to all requests.
14 * @output wp-includes/js/api-request.js
15 */
16
17( function( $ ) {
18	var wpApiSettings = window.wpApiSettings;
19
20	function apiRequest( options ) {
21		options = apiRequest.buildAjaxOptions( options );
22		return apiRequest.transport( options );
23	}
24
25	apiRequest.buildAjaxOptions = function( options ) {
26		var url = options.url;
27		var path = options.path;
28		var method = options.method;
29		var namespaceTrimmed, endpointTrimmed, apiRoot;
30		var headers, addNonceHeader, addAcceptHeader, headerName;
31
32		if (
33			typeof options.namespace === 'string' &&
34			typeof options.endpoint === 'string'
35		) {
36			namespaceTrimmed = options.namespace.replace( /^\/|\/$/g, '' );
37			endpointTrimmed = options.endpoint.replace( /^\//, '' );
38			if ( endpointTrimmed ) {
39				path = namespaceTrimmed + '/' + endpointTrimmed;
40			} else {
41				path = namespaceTrimmed;
42			}
43		}
44		if ( typeof path === 'string' ) {
45			apiRoot = wpApiSettings.root;
46			path = path.replace( /^\//, '' );
47
48			// API root may already include query parameter prefix
49			// if site is configured to use plain permalinks.
50			if ( 'string' === typeof apiRoot && -1 !== apiRoot.indexOf( '?' ) ) {
51				path = path.replace( '?', '&' );
52			}
53
54			url = apiRoot + path;
55		}
56
57		// If ?_wpnonce=... is present, no need to add a nonce header.
58		addNonceHeader = ! ( options.data && options.data._wpnonce );
59		addAcceptHeader = true;
60
61		headers = options.headers || {};
62
63		for ( headerName in headers ) {
64			if ( ! headers.hasOwnProperty( headerName ) ) {
65				continue;
66			}
67
68			// If an 'X-WP-Nonce' or 'Accept' header (or any case-insensitive variation
69			// thereof) was specified, no need to add the header again.
70			switch ( headerName.toLowerCase() ) {
71				case 'x-wp-nonce':
72					addNonceHeader = false;

73					break;
74				case 'accept':
75					addAcceptHeader = false;
76					break;
77			}
78		}
79
80		if ( addNonceHeader ) {
81			// Do not mutate the original headers object, if any.
82			headers = $.extend( {
83				'X-WP-Nonce': wpApiSettings.nonce
84			}, headers );
85		}
86
87		if ( addAcceptHeader ) {
88			headers = $.extend( {
89				'Accept': 'application/json, */*;q=0.1'
90			}, headers );
91		}
92
93		if ( typeof method === 'string' ) {
94			method = method.toUpperCase();
95
96			if ( 'PUT' === method || 'DELETE' === method ) {
97				headers = $.extend( {
98					'X-HTTP-Method-Override': method
99				}, headers );
100
101				method = 'POST';
102			}
103		}
104
105		// Do not mutate the original options object.
106		options = $.extend( {}, options, {
107			headers: headers,
108			url: url,
109			method: method
110		} );
111
112		delete options.path;
113		delete options.namespace;
114		delete options.endpoint;
115
116		return options;
117	};
118
119	apiRequest.transport = $.ajax;
120
121	/** @namespace wp */
122	window.wp = window.wp || {};
123	window.wp.apiRequest = apiRequest;
124} )( jQuery );