1 | "use strict";
|
2 |
|
3 | Object.defineProperty(exports, "__esModule", {
|
4 | value: true
|
5 | });
|
6 | exports.default = inspect;
|
7 |
|
8 | var _nodejsCustomInspectSymbol = _interopRequireDefault(require("./nodejsCustomInspectSymbol"));
|
9 |
|
10 | function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
|
11 |
|
12 | function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
|
13 |
|
14 | var MAX_ARRAY_LENGTH = 10;
|
15 | var MAX_RECURSIVE_DEPTH = 2;
|
16 |
|
17 |
|
18 |
|
19 |
|
20 | function inspect(value) {
|
21 | return formatValue(value, []);
|
22 | }
|
23 |
|
24 | function formatValue(value, seenValues) {
|
25 | switch (_typeof(value)) {
|
26 | case 'string':
|
27 | return JSON.stringify(value);
|
28 |
|
29 | case 'function':
|
30 | return value.name ? "[function ".concat(value.name, "]") : '[function]';
|
31 |
|
32 | case 'object':
|
33 | if (value === null) {
|
34 | return 'null';
|
35 | }
|
36 |
|
37 | return formatObjectValue(value, seenValues);
|
38 |
|
39 | default:
|
40 | return String(value);
|
41 | }
|
42 | }
|
43 |
|
44 | function formatObjectValue(value, previouslySeenValues) {
|
45 | if (previouslySeenValues.indexOf(value) !== -1) {
|
46 | return '[Circular]';
|
47 | }
|
48 |
|
49 | var seenValues = [].concat(previouslySeenValues, [value]);
|
50 | var customInspectFn = getCustomFn(value);
|
51 |
|
52 | if (customInspectFn !== undefined) {
|
53 |
|
54 | var customValue = customInspectFn.call(value);
|
55 |
|
56 | if (customValue !== value) {
|
57 | return typeof customValue === 'string' ? customValue : formatValue(customValue, seenValues);
|
58 | }
|
59 | } else if (Array.isArray(value)) {
|
60 | return formatArray(value, seenValues);
|
61 | }
|
62 |
|
63 | return formatObject(value, seenValues);
|
64 | }
|
65 |
|
66 | function formatObject(object, seenValues) {
|
67 | var keys = Object.keys(object);
|
68 |
|
69 | if (keys.length === 0) {
|
70 | return '{}';
|
71 | }
|
72 |
|
73 | if (seenValues.length > MAX_RECURSIVE_DEPTH) {
|
74 | return '[' + getObjectTag(object) + ']';
|
75 | }
|
76 |
|
77 | var properties = keys.map(function (key) {
|
78 | var value = formatValue(object[key], seenValues);
|
79 | return key + ': ' + value;
|
80 | });
|
81 | return '{ ' + properties.join(', ') + ' }';
|
82 | }
|
83 |
|
84 | function formatArray(array, seenValues) {
|
85 | if (array.length === 0) {
|
86 | return '[]';
|
87 | }
|
88 |
|
89 | if (seenValues.length > MAX_RECURSIVE_DEPTH) {
|
90 | return '[Array]';
|
91 | }
|
92 |
|
93 | var len = Math.min(MAX_ARRAY_LENGTH, array.length);
|
94 | var remaining = array.length - len;
|
95 | var items = [];
|
96 |
|
97 | for (var i = 0; i < len; ++i) {
|
98 | items.push(formatValue(array[i], seenValues));
|
99 | }
|
100 |
|
101 | if (remaining === 1) {
|
102 | items.push('... 1 more item');
|
103 | } else if (remaining > 1) {
|
104 | items.push("... ".concat(remaining, " more items"));
|
105 | }
|
106 |
|
107 | return '[' + items.join(', ') + ']';
|
108 | }
|
109 |
|
110 | function getCustomFn(object) {
|
111 | var customInspectFn = object[String(_nodejsCustomInspectSymbol.default)];
|
112 |
|
113 | if (typeof customInspectFn === 'function') {
|
114 | return customInspectFn;
|
115 | }
|
116 |
|
117 | if (typeof object.inspect === 'function') {
|
118 | return object.inspect;
|
119 | }
|
120 | }
|
121 |
|
122 | function getObjectTag(object) {
|
123 | var tag = Object.prototype.toString.call(object).replace(/^\[object /, '').replace(/]$/, '');
|
124 |
|
125 | if (tag === 'Object' && typeof object.constructor === 'function') {
|
126 | var name = object.constructor.name;
|
127 |
|
128 | if (typeof name === 'string' && name !== '') {
|
129 | return name;
|
130 | }
|
131 | }
|
132 |
|
133 | return tag;
|
134 | }
|