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'use strict';

/* global toDebugString: true */

function serializeObject(obj) {

var seen = [];

return JSON.stringify(obj, function(key, val) {

val = toJsonReplacer(key, val);

if (isObject(val)) {

if (seen.indexOf(val) >= 0) return '...';

seen.push(val);

}

return val;

});

}

function toDebugString(obj) {

if (typeof obj === 'function') {

return obj.toString().replace(/ \{[\s\S]*$/, '');

} else if (isUndefined(obj)) {

return 'undefined';

} else if (typeof obj !== 'string') {

return serializeObject(obj);

}

return obj;

}