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- "use strict";
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- exports.default = inspect;
- var _nodejsCustomInspectSymbol = _interopRequireDefault(require("./nodejsCustomInspectSymbol"));
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
- 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); }
- var MAX_ARRAY_LENGTH = 10;
- var MAX_RECURSIVE_DEPTH = 2;
- function inspect(value) {
- return formatValue(value, []);
- }
- function formatValue(value, seenValues) {
- switch (_typeof(value)) {
- case 'string':
- return JSON.stringify(value);
- case 'function':
- return value.name ? "[function ".concat(value.name, "]") : '[function]';
- case 'object':
- if (value === null) {
- return 'null';
- }
- return formatObjectValue(value, seenValues);
- default:
- return String(value);
- }
- }
- function formatObjectValue(value, previouslySeenValues) {
- if (previouslySeenValues.indexOf(value) !== -1) {
- return '[Circular]';
- }
- var seenValues = [].concat(previouslySeenValues, [value]);
- var customInspectFn = getCustomFn(value);
- if (customInspectFn !== undefined) {
-
- var customValue = customInspectFn.call(value);
- if (customValue !== value) {
- return typeof customValue === 'string' ? customValue : formatValue(customValue, seenValues);
- }
- } else if (Array.isArray(value)) {
- return formatArray(value, seenValues);
- }
- return formatObject(value, seenValues);
- }
- function formatObject(object, seenValues) {
- var keys = Object.keys(object);
- if (keys.length === 0) {
- return '{}';
- }
- if (seenValues.length > MAX_RECURSIVE_DEPTH) {
- return '[' + getObjectTag(object) + ']';
- }
- var properties = keys.map(function (key) {
- var value = formatValue(object[key], seenValues);
- return key + ': ' + value;
- });
- return '{ ' + properties.join(', ') + ' }';
- }
- function formatArray(array, seenValues) {
- if (array.length === 0) {
- return '[]';
- }
- if (seenValues.length > MAX_RECURSIVE_DEPTH) {
- return '[Array]';
- }
- var len = Math.min(MAX_ARRAY_LENGTH, array.length);
- var remaining = array.length - len;
- var items = [];
- for (var i = 0; i < len; ++i) {
- items.push(formatValue(array[i], seenValues));
- }
- if (remaining === 1) {
- items.push('... 1 more item');
- } else if (remaining > 1) {
- items.push("... ".concat(remaining, " more items"));
- }
- return '[' + items.join(', ') + ']';
- }
- function getCustomFn(object) {
- var customInspectFn = object[String(_nodejsCustomInspectSymbol.default)];
- if (typeof customInspectFn === 'function') {
- return customInspectFn;
- }
- if (typeof object.inspect === 'function') {
- return object.inspect;
- }
- }
- function getObjectTag(object) {
- var tag = Object.prototype.toString.call(object).replace(/^\[object /, '').replace(/]$/, '');
- if (tag === 'Object' && typeof object.constructor === 'function') {
- var name = object.constructor.name;
- if (typeof name === 'string' && name !== '') {
- return name;
- }
- }
- return tag;
- }
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