Webpack: [karma]: TypeError: Cannot read property 'unmask' of undefined

Created on 26 May 2017 · 9Comments · Source: vuejs-templates/webpack

Hello! I just started new project with vue-webpack template and get this error when start Karma.

My configuration is
OS: linux
nodejs 7.10.0

Thanks!

[email protected] test:watch /home/alexey2baranov/htdocs/terminal-client
cross-env BABEL_ENV=test karma start test/unit/karma.conf.js

26 05 2017 11:20:27.635:WARN [karma]: No captured browser, open http://localhost:9876/
26 05 2017 11:20:27.813:INFO [karma]: Karma v1.7.0 server started at http://0.0.0.0:9876/
26 05 2017 11:20:27.816:INFO [launcher]: Launching browser Chrome with unlimited concurrency
26 05 2017 11:20:31.222:INFO [launcher]: Starting browser Chrome
26 05 2017 11:20:36.924:INFO [Chrome 57.0.2987 (Linux 0.0.0)]: Connected on socket CPDfri4jMAa3b6CEAAAA with id 12770951
26 05 2017 11:20:36.933:ERROR [karma]: TypeError: Cannot read property 'unmask' of undefined
at Receiver.unmask (/home/alexey2baranov/htdocs/terminal-client/node_modules/engine.io/node_modules/ws/lib/Receiver.js:306:46)
at Receiver.finish (/home/alexey2baranov/htdocs/terminal-client/node_modules/engine.io/node_modules/ws/lib/Receiver.js:505:25)
at Receiver.expectHandler (/home/alexey2baranov/htdocs/terminal-client/node_modules/engine.io/node_modules/ws/lib/Receiver.js:493:33)
at Receiver.add (/home/alexey2baranov/htdocs/terminal-client/node_modules/engine.io/node_modules/ws/lib/Receiver.js:103:24)
at Socket.realHandler (/home/alexey2baranov/htdocs/terminal-client/node_modules/engine.io/node_modules/ws/lib/WebSocket.js:825:20)
at emitOne (events.js:96:13)
at Socket.emit (events.js:191:7)
at readableAddChunk (_stream_readable.js:178:18)
at Socket.Readable.push (_stream_readable.js:136:10)
at TCP.onread (net.js:561:20)

package.json

{
  "name": "terminal-client",
  "version": "1.0.0",
  "description": "terminal clietn",
  "author": "[email protected]",
  "private": true,
  "scripts": {
    "crossbar": "crossbar start",
    "dev": "node build/dev-server.js",
    "build": "node build/build.js",
    "unit": "cross-env BABEL_ENV=test karma start test/unit/karma.conf.js --single-run",
    "test": "npm run unit",
    "test:watch": "cross-env BABEL_ENV=test karma start test/unit/karma.conf.js"
  },
  "dependencies": {
    "autobahn": "^17.5.2",
    "bootstrap": "^3.3.7",
    "event-emitter": "^0.3.5",
    "jquery": "^3.2.1",
    "loglevel": "^1.4.1",
    "tether": "^1.4.0",
    "vue": "^2.2.2"
  },
  "devDependencies": {
    "autoprefixer": "^6.7.2",
    "babel-core": "^6.22.1",
    "babel-loader": "^6.2.10",
    "babel-plugin-istanbul": "^3.1.2",
    "babel-plugin-transform-runtime": "^6.22.0",
    "babel-preset-env": "^1.2.1",
    "babel-preset-stage-2": "^6.22.0",
    "babel-register": "^6.22.0",
    "chai": "^3.5.0",
    "chalk": "^1.1.3",
    "connect-history-api-fallback": "^1.3.0",
    "copy-webpack-plugin": "^4.0.1",
    "cross-env": "^3.2.4",
    "css-loader": "^0.26.1",
    "eventsource-polyfill": "^0.9.6",
    "express": "^4.14.1",
    "extract-text-webpack-plugin": "^2.0.0",
    "file-loader": "^0.10.0",
    "friendly-errors-webpack-plugin": "^1.1.3",
    "function-bind": "^1.1.0",
    "html-webpack-plugin": "^2.28.0",
    "http-proxy-middleware": "^0.17.3",
    "inject-loader": "^2.0.1",
    "karma": "^1.4.1",
    "karma-chrome-launcher": "^2.0.0",
    "karma-coverage": "^1.1.1",
    "karma-mocha": "^1.3.0",
    "karma-phantomjs-launcher": "^1.0.2",
    "karma-sinon-chai": "^1.2.4",
    "karma-sourcemap-loader": "^0.3.7",
    "karma-spec-reporter": "0.0.26",
    "karma-webpack": "^2.0.2",
    "lolex": "^1.5.2",
    "mocha": "^3.2.0",
    "opn": "^4.0.2",
    "optimize-css-assets-webpack-plugin": "^1.3.0",
    "ora": "^1.1.0",
    "phantomjs-prebuilt": "^2.1.14",
    "rimraf": "^2.6.0",
    "semver": "^5.3.0",
    "sinon": "^1.17.7",
    "sinon-chai": "^2.8.0",
    "url-loader": "^0.5.7",
    "vue-loader": "^11.1.4",
    "vue-style-loader": "^2.0.0",
    "vue-template-compiler": "^2.2.4",
    "webpack": "^2.2.1",
    "webpack-bundle-analyzer": "^2.2.1",
    "webpack-dev-middleware": "^1.10.0",
    "webpack-hot-middleware": "^2.16.1",
    "webpack-merge": "^2.6.1"
  },
  "engines": {
    "node": ">= 4.0.0",
    "npm": ">= 3.0.0"
  },
  "browserslist": [
    "> 1%",
    "last 2 versions",
    "not ie <= 8"
  ]
}

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