While I updated to "zone.js": "^0.8.4". issue looks resolved.

See #5432 for why frequency is critical (it breaks unit tests).

Hi.
What is the syntax for updating zone.js ?
i tried npm install tsd but didnt worked

@angular/core@4.0.1 requires a peer of zone.js@^0.8.4 but none was installed.

@shijilesh Try this: npm install zone.js@^0.8.4

i tried npm install zone.js@^0.8.4 and also .5 but am getting error as invalid

On my end, it was already installed but it didn't want to update since my company is blocking the git protocol/port, so I had to change the repository type and URL to https:

node_modules/zone.js/package.json

"repository": {
    "type": "https",
    "url": "https://github.com/angular/zone.js.git"
  },

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