80 lines
1.4 KiB
JavaScript
80 lines
1.4 KiB
JavaScript
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/*!
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* depd
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* Copyright(c) 2014-2015 Douglas Christopher Wilson
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* MIT Licensed
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*/
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'use strict'
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/**
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* Module dependencies.
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* @private
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*/
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var EventEmitter = require('events').EventEmitter
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/**
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* Module exports.
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* @public
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*/
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lazyProperty(module.exports, 'callSiteToString', function callSiteToString () {
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var limit = Error.stackTraceLimit
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var obj = {}
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var prep = Error.prepareStackTrace
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function prepareObjectStackTrace (obj, stack) {
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return stack
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}
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Error.prepareStackTrace = prepareObjectStackTrace
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Error.stackTraceLimit = 2
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// capture the stack
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Error.captureStackTrace(obj)
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// slice the stack
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var stack = obj.stack.slice()
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Error.prepareStackTrace = prep
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Error.stackTraceLimit = limit
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return stack[0].toString ? toString : require('./callsite-tostring')
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})
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lazyProperty(module.exports, 'eventListenerCount', function eventListenerCount () {
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return EventEmitter.listenerCount || require('./event-listener-count')
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})
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/**
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* Define a lazy property.
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*/
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function lazyProperty (obj, prop, getter) {
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function get () {
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var val = getter()
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Object.defineProperty(obj, prop, {
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configurable: true,
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enumerable: true,
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value: val
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})
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return val
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}
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Object.defineProperty(obj, prop, {
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configurable: true,
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enumerable: true,
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get: get
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})
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}
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/**
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* Call toString() on the obj
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*/
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function toString (obj) {
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return obj.toString()
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}
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