1 | var tape = require('tape')
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2 | , EE = require('events').EventEmitter
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3 | , util = require('util')
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4 |
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5 |
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6 | , isStream = require('./')
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7 | , isReadable = require('./').isReadable
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8 | , isWritable = require('./').isWritable
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9 | , isDuplex = require('./').isDuplex
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10 |
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11 | , CoreStreams = require('stream')
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12 | , ReadableStream10 = require('./readable-stream-1.0/')
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13 | , ReadableStream11 = require('./readable-stream-1.1/')
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14 |
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15 |
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16 | function test (pass, type, stream) {
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17 | tape('isStream(' + type + ')', function (t) {
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18 | t.plan(1)
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19 | t.ok(pass === isStream(stream), type)
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20 | })
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21 | }
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22 |
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23 |
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24 | function testReadable (pass, type, stream) {
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25 | tape('isReadable(' + type + ')', function (t) {
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26 | t.plan(1)
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27 | t.ok(pass === isReadable(stream), type)
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28 | })
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29 | }
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30 |
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31 |
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32 | function testWritable (pass, type, stream) {
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33 | tape('isWritable(' + type + ')', function (t) {
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34 | t.plan(1)
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35 | t.ok(pass === isWritable(stream), type)
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36 | })
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37 | }
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38 |
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39 |
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40 | function testDuplex (pass, type, stream) {
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41 | tape('isDuplex(' + type + ')', function (t) {
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42 | t.plan(1)
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43 | t.ok(pass === isDuplex(stream), type)
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44 | })
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45 | }
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46 |
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47 |
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48 | [ undefined, null, '', true, false, 0, 1, 1.0, 'string', {}, function foo () {} ].forEach(function (o) {
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49 | test(false, 'non-stream / primitive: ' + (JSON.stringify(o) || (o && o.toString()) || o), o)
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50 | })
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51 |
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52 |
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53 | test(false, 'fake stream obj', { pipe: function () {} })
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54 |
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55 |
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56 | ;(function () {
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57 |
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58 |
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59 |
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60 | function Stream () {
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61 | EE.call(this)
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62 | }
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63 | util.inherits(Stream, EE)
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64 | Stream.prototype.pipe = function () {}
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65 | Stream.Stream = Stream
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66 |
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67 | test(false, 'fake stream "new Stream()"', new Stream())
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68 |
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69 | }())
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70 |
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71 |
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72 | test(true, 'CoreStreams.Stream', new (CoreStreams.Stream)())
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73 | test(true, 'CoreStreams.Readable', new (CoreStreams.Readable)())
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74 | test(true, 'CoreStreams.Writable', new (CoreStreams.Writable)())
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75 | test(true, 'CoreStreams.Duplex', new (CoreStreams.Duplex)())
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76 | test(true, 'CoreStreams.Transform', new (CoreStreams.Transform)())
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77 | test(true, 'CoreStreams.PassThrough', new (CoreStreams.PassThrough)())
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78 |
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79 | test(true, 'ReadableStream10.Readable', new (ReadableStream10.Readable)())
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80 | test(true, 'ReadableStream10.Writable', new (ReadableStream10.Writable)())
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81 | test(true, 'ReadableStream10.Duplex', new (ReadableStream10.Duplex)())
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82 | test(true, 'ReadableStream10.Transform', new (ReadableStream10.Transform)())
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83 | test(true, 'ReadableStream10.PassThrough', new (ReadableStream10.PassThrough)())
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84 |
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85 | test(true, 'ReadableStream11.Readable', new (ReadableStream11.Readable)())
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86 | test(true, 'ReadableStream11.Writable', new (ReadableStream11.Writable)())
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87 | test(true, 'ReadableStream11.Duplex', new (ReadableStream11.Duplex)())
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88 | test(true, 'ReadableStream11.Transform', new (ReadableStream11.Transform)())
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89 | test(true, 'ReadableStream11.PassThrough', new (ReadableStream11.PassThrough)())
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90 |
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91 |
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92 | testReadable(false, 'CoreStreams.Stream', new (CoreStreams.Stream)())
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93 | testReadable(true, 'CoreStreams.Readable', new (CoreStreams.Readable)())
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94 | testReadable(false, 'CoreStreams.Writable', new (CoreStreams.Writable)())
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95 | testReadable(true, 'CoreStreams.Duplex', new (CoreStreams.Duplex)())
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96 | testReadable(true, 'CoreStreams.Transform', new (CoreStreams.Transform)())
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97 | testReadable(true, 'CoreStreams.PassThrough', new (CoreStreams.PassThrough)())
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98 |
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99 | testReadable(true, 'ReadableStream10.Readable', new (ReadableStream10.Readable)())
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100 | testReadable(false, 'ReadableStream10.Writable', new (ReadableStream10.Writable)())
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101 | testReadable(true, 'ReadableStream10.Duplex', new (ReadableStream10.Duplex)())
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102 | testReadable(true, 'ReadableStream10.Transform', new (ReadableStream10.Transform)())
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103 | testReadable(true, 'ReadableStream10.PassThrough', new (ReadableStream10.PassThrough)())
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104 |
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105 | testReadable(true, 'ReadableStream11.Readable', new (ReadableStream11.Readable)())
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106 | testReadable(false, 'ReadableStream11.Writable', new (ReadableStream11.Writable)())
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107 | testReadable(true, 'ReadableStream11.Duplex', new (ReadableStream11.Duplex)())
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108 | testReadable(true, 'ReadableStream11.Transform', new (ReadableStream11.Transform)())
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109 | testReadable(true, 'ReadableStream11.PassThrough', new (ReadableStream11.PassThrough)())
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110 |
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111 |
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112 | testWritable(false, 'CoreStreams.Stream', new (CoreStreams.Stream)())
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113 | testWritable(false, 'CoreStreams.Readable', new (CoreStreams.Readable)())
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114 | testWritable(true, 'CoreStreams.Writable', new (CoreStreams.Writable)())
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115 | testWritable(true, 'CoreStreams.Duplex', new (CoreStreams.Duplex)())
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116 | testWritable(true, 'CoreStreams.Transform', new (CoreStreams.Transform)())
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117 | testWritable(true, 'CoreStreams.PassThrough', new (CoreStreams.PassThrough)())
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118 |
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119 | testWritable(false, 'ReadableStream10.Readable', new (ReadableStream10.Readable)())
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120 | testWritable(true, 'ReadableStream10.Writable', new (ReadableStream10.Writable)())
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121 | testWritable(true, 'ReadableStream10.Duplex', new (ReadableStream10.Duplex)())
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122 | testWritable(true, 'ReadableStream10.Transform', new (ReadableStream10.Transform)())
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123 | testWritable(true, 'ReadableStream10.PassThrough', new (ReadableStream10.PassThrough)())
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124 |
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125 | testWritable(false, 'ReadableStream11.Readable', new (ReadableStream11.Readable)())
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126 | testWritable(true, 'ReadableStream11.Writable', new (ReadableStream11.Writable)())
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127 | testWritable(true, 'ReadableStream11.Duplex', new (ReadableStream11.Duplex)())
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128 | testWritable(true, 'ReadableStream11.Transform', new (ReadableStream11.Transform)())
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129 | testWritable(true, 'ReadableStream11.PassThrough', new (ReadableStream11.PassThrough)())
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130 |
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131 |
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132 | testDuplex(false, 'CoreStreams.Stream', new (CoreStreams.Stream)())
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133 | testDuplex(false, 'CoreStreams.Readable', new (CoreStreams.Readable)())
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134 | testDuplex(false, 'CoreStreams.Writable', new (CoreStreams.Writable)())
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135 | testDuplex(true, 'CoreStreams.Duplex', new (CoreStreams.Duplex)())
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136 | testDuplex(true, 'CoreStreams.Transform', new (CoreStreams.Transform)())
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137 | testDuplex(true, 'CoreStreams.PassThrough', new (CoreStreams.PassThrough)())
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138 |
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139 | testDuplex(false, 'ReadableStream10.Readable', new (ReadableStream10.Readable)())
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140 | testDuplex(false, 'ReadableStream10.Writable', new (ReadableStream10.Writable)())
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141 | testDuplex(true, 'ReadableStream10.Duplex', new (ReadableStream10.Duplex)())
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142 | testDuplex(true, 'ReadableStream10.Transform', new (ReadableStream10.Transform)())
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143 | testDuplex(true, 'ReadableStream10.PassThrough', new (ReadableStream10.PassThrough)())
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144 |
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145 | testDuplex(false, 'ReadableStream11.Readable', new (ReadableStream11.Readable)())
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146 | testDuplex(false, 'ReadableStream11.Writable', new (ReadableStream11.Writable)())
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147 | testDuplex(true, 'ReadableStream11.Duplex', new (ReadableStream11.Duplex)())
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148 | testDuplex(true, 'ReadableStream11.Transform', new (ReadableStream11.Transform)())
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149 | testDuplex(true, 'ReadableStream11.PassThrough', new (ReadableStream11.PassThrough)())
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150 |
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151 |
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152 | ;[ CoreStreams, ReadableStream10, ReadableStream11 ].forEach(function (p) {
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153 | [ 'Stream', 'Readable', 'Writable', 'Duplex', 'Transform', 'PassThrough' ].forEach(function (k) {
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154 | if (!p[k])
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155 | return
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156 |
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157 | function SubStream () {
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158 | p[k].call(this)
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159 | }
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160 | util.inherits(SubStream, p[k])
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161 |
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162 | test(true, 'Stream subclass: ' + p.name + '.' + k, new SubStream())
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163 |
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164 | })
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165 | })
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166 |
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167 |
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168 |
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