error TS2305: Module ''bn.js'' has no exported member 'BigNumber'

[leoplct]

I am following this tutorial: https://0xproject.com/wiki#Create,-Validate,-Fill-Order

When I run

yarn run order_actions

I get this error

yarn run v1.6.0
$ run-s build tutorial:order_actions
$ tsc
node_modules/web3/types.d.ts(1,10): error TS2305: Module ''bn.js'' has no exported member 'BigNumber'.
node_modules/web3/types.d.ts(1,27): error TS2497: Module ''bn.js'' resolves to a non-module entity and cannot be imported using this construct.
error Command failed with exit code 2.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
ERROR: "build" exited with 1.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

package.json

{
    "name": "0xStarterProject",
    "version": "0.1.0",
    "description": "",
    "scripts": {
        "order_actions": "run-s build tutorial:order_actions"
....

"dependencies": {
        "0x.js": "0.36.3",
        "@0xproject/connect": "^0.6.10",
        "@0xproject/tslint-config": "^0.4.16",
        "@0xproject/utils": "^0.5.2",
        "@types/underscore": "^1.8.8",
        "body-parser": "^1.18.2",
        "express": "^4.16.2",
        "web3": "^1.0.0-beta.34",
        "websocket": "^1.0.25"
    }

[freeatnet]

Looks like this was solved here: https://github.com/0xProject/0x-starter-project/issues/11#issuecomment-386889563

[emkman]

@freeatnet It isn't clear to me what the resolution is besides trying to change web3 version or delete some relative folder. Can you elaborate? I am using "web3": "^1.0.0-beta.34" and "@types/web3": "^1.0.0"

[emkman]

Following up, it looks like the suggestion is to delete the type definitions from node_modules/web3. This solves the error but is just a workaround and not a solution correct? Is the ultimate goal to update the type definitions in the web3 package?

[freeatnet]

@emkman There are now proper type definitions available through DefinitelyTyped (DefinitelyTyped/DefinitelyTyped#26031), along with an guide to using them here: #1658 (comment). There's also a request to remove type definitions from web3.js itself: #1658.

[nivida]

Version 0.20.x got his last maintenance release with v0.20.7. Please update your code to the latest 1.0 version of Web3.js. Further details about the current project state are explained in the release announcement of version 1.0.0-beta.38.