dynatrace-cordova-outsystems-plugin/node_modules/generate-function/index.js

This plugin gives you the ability to use the Dynatrace instrumentation in your hybrid application (Cordova, Ionic, ..). It uses the Mobile Agent, the JavaScript Agent and the Javascript Bridge. The Mobile Agent will give you all device specific values con

var util = require('util')
var isProperty = require('is-property')

var INDENT_START = /[\{\[]/
var INDENT_END = /[\}\]]/

// from https://mathiasbynens.be/notes/reserved-keywords
var RESERVED = [
  'do',
  'if',
  'in',
  'for',
  'let',
  'new',
  'try',
  'var',
  'case',
  'else',
  'enum',
  'eval',
  'null',
  'this',
  'true',
  'void',
  'with',
  'await',
  'break',
  'catch',
  'class',
  'const',
  'false',
  'super',
  'throw',
  'while',
  'yield',
  'delete',
  'export',
  'import',
  'public',
  'return',
  'static',
  'switch',
  'typeof',
  'default',
  'extends',
  'finally',
  'package',
  'private',
  'continue',
  'debugger',
  'function',
  'arguments',
  'interface',
  'protected',
  'implements',
  'instanceof',
  'NaN',
  'undefined'
]

var RESERVED_MAP = {}

for (var i = 0; i < RESERVED.length; i++) {
  RESERVED_MAP[RESERVED[i]] = true
}

var isVariable = function (name) {
  return isProperty(name) && !RESERVED_MAP.hasOwnProperty(name)
}

var formats = {
  s: function(s) {
    return '' + s
  },
  d: function(d) {
    return '' + Number(d)
  },
  o: function(o) {
    return JSON.stringify(o)
  }
}

var genfun = function() {
  var lines = []
  var indent = 0
  var vars = {}

  var push = function(str) {
    var spaces = ''
    while (spaces.length < indent*2) spaces += '  '
    lines.push(spaces+str)
  }

  var pushLine = function(line) {
    if (INDENT_END.test(line.trim()[0]) && INDENT_START.test(line[line.length-1])) {
      indent--
      push(line)
      indent++
      return
    }
    if (INDENT_START.test(line[line.length-1])) {
      push(line)
      indent++
      return
    }
    if (INDENT_END.test(line.trim()[0])) {
      indent--
      push(line)
      return
    }

    push(line)
  }

  var line = function(fmt) {
    if (!fmt) return line

    if (arguments.length === 1 && fmt.indexOf('\n') > -1) {
      var lines = fmt.trim().split('\n')
      for (var i = 0; i < lines.length; i++) {
        pushLine(lines[i].trim())
      }
    } else {
      pushLine(util.format.apply(util, arguments))
    }

    return line
  }

  line.scope = {}
  line.formats = formats

  line.sym = function(name) {
    if (!name || !isVariable(name)) name = 'tmp'
    if (!vars[name]) vars[name] = 0
    return name + (vars[name]++ || '')
  }

  line.property = function(obj, name) {
    if (arguments.length === 1) {
      name = obj
      obj = ''
    }

    name = name + ''

    if (isProperty(name)) return (obj ? obj + '.' + name : name)
    return obj ? obj + '[' + JSON.stringify(name) + ']' : JSON.stringify(name)
  }

  line.toString = function() {
    return lines.join('\n')
  }

  line.toFunction = function(scope) {
    if (!scope) scope = {}

    var src = 'return ('+line.toString()+')'

    Object.keys(line.scope).forEach(function (key) {
      if (!scope[key]) scope[key] = line.scope[key]
    })

    var keys = Object.keys(scope).map(function(key) {
      return key
    })

    var vals = keys.map(function(key) {
      return scope[key]
    })

    return Function.apply(null, keys.concat(src)).apply(null, vals)
  }

  if (arguments.length) line.apply(null, arguments)

  return line
}

genfun.formats = formats
module.exports = genfun