open-index/open-npm huggingface dataset:
npm package: @poppanator/assert-error
Description: Assert or type assert that error is an Error
Author: Pontus Östlund
Latest version: 1.0.2

# assert-error

When using strict errors in TS the type of the error in the `catch` clause
is `unknown`. This is a good thing since it forces you to properly handle the
error.

This package provides two functions to make this error handling easier.

## Install

The usual `npm install @poppanator/assert-error`,
`yarn add @poppanator/assert-error`, etc...

## Example

Ponder the following

```ts
try {
  // Do some funky salsa
} catch (err: unknown) {
  console.error('Error message:', err.message)
  // .................................^^^^^^^
  // It's a nono
}
```

Since TS doesn't know wether `err` is an error object or not you can't index
on it.

But using `assertError()` you can:

```ts
import { assertError } from '@poppanator/assert-error'

try {
  // Do some funky chimichurri
} catch (err: unknown) {
  assertError(err)
  console.error('Error message:', err.message)
  // It's a Yay-Yay
}
```

Now TS known ist's an Error object and indexing on it is fine.
If `err` is not an instance of (at least) `Error`, `assertError()` will throw.

To assert `err` is some other error than `Error`, you can provide the class
constructor as second argument to `assertError()`:

```ts
class MyError extends Error {
  public code = 12
}

try {
  // Do some funky pesto
} catch (err: unknown) {
  assertError(err, MyError)
  console.error('Error:', err.code)
}
```

Now, you may not always want something to throw in you `catch` clause. If
that's the case you can use `assumeError()`, which is just a typeguard working
in the same way as `assertError()`.

`assertError()` is to prefer over `assumeError()`, but there might be situations
where you just want to type-guard and not risking ending up with something
throwing an error.

**NOTE!** `assumeError()` has no runtime-effect. It does nothing.

```ts
import { assumeError } from '@poppanator/assert-error'

try {
  // Do some funky gaspacho
} catch (err: unknown) {
  assumeError(err)
  console.error('Error:', err.message)

  // These two are the same thing
  assumeError<MyError>(err)
  assumeError(err, MyError)

  if (err.code) {
    console.error('Error code:', err.code)
  }
}
```
npm package: @popperjs/scripts
Description: This package is a list of scripts used by Popper.js and Tooltip.js to compile their sources and publish them on npm, NuGet and so on.
Author: Federico Zivolo
Latest version: 1.0.10

# Popper.js scripts

This package is a list of scripts used by Popper.js and Tooltip.js to compile
their sources and publish them on npm, NuGet and so on.

It's not intended to be used outside of Popper.js repository.