I need to include the 'express' module in my app.
According to Mozilla's documentation, we should use the following code:
import { Application }, * as Express from 'express'
However, when using it in TypeScript and VSCode, I encounter errors and end up using this code instead:
import * as Express from 'express'
import { Application } from 'express'
How can I resolve this issue?
Your current code snippet:
import { Application }, * as Express from 'express'
is incorrect. Luckily, you are working with TypeScript which helps prevent bugs. The correct way to import is:
import * as Express from 'express'
import { Application } from 'express'
You have already realized this error. Remember that you cannot mix member imports and wildcard (*) imports in the same line. This information is also documented on MDN: https://developer.mozilla.org/en/docs/web/javascript/reference/statements/import
From my understanding of TypeScript, when you import modules using:
import * as Express from 'express'
A Namespace is created where all the methods/components can be referenced with syntax like:
Express.Application
On the other hand, if you use
import { Application } from 'express'
This will only import the Application member from Express and it will be referenced as its own class.
If you do not need everything from Express, the first import can be skipped and dependencies can be chained like so:
import { Application, 'Member1', 'Member2' } from 'express'
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