ERROR TypeError: web3_1.default is not a constructor

[agrofcsik]

On:
this.web3 = new Web3(window.web3.currentProvider);
in web3.service.ts

I'm getting the following:
ERROR TypeError: web3_1.default is not a constructor

[agrofcsik]

This seemed to solve my issue for now:
web3/web3.js#1155

[Ritin]

@agrofcsik the solution at https://github.com/ethereum/web3.js/issues/1155
did not work for me
import Web3 from 'web3';
gives the above mentioned (TypeError: web3_1.default is not a constructor)
import * as Web3 from 'web3';
webpack compile Fails

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[agrofcsik]

I ended up giving up and going with: angular4-truffle-starter-dapp which seems to work better.

[kmturley]

when changing from:
import Web3 from 'web3';

to:
import * as Web3 from 'web3';

I get a different error afterwards:

truffle_contract_1.default is not a function

Which seems to be fixed by changing the line:
import {default as contract} from 'truffle-contract';

to:
const contract = require('truffle-contract');

[sergeym610]

ERROR TypeError: web3_1.default is not a constructor
This problem was made me crazy a few days.
I used "npm install web3 --save" command and import Web3 from 'web3';
So, the error occurred!
In my experience, I removed "import Web3 from 'web3';" and added new lines like
"declare let Web3: any;
declare let web3;"

It works correctly for me.
I hope that this is correct resolve.
Thanks