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function _typeof(obj) { "@babel/helpers - typeof"; 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); }
/* eslint-disable flowtype/no-weak-types */
import nodejsCustomInspectSymbol from "./nodejsCustomInspectSymbol.mjs";
var MAX_ARRAY_LENGTH = 10;
var MAX_RECURSIVE_DEPTH = 2;
/**
* Used to print values in error messages.
*/
export default 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); // check for infinite recursion
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)];
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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