TS Default Value Fix

TODO: collapasable, copyable, download, etc

In my React component in TypeSCript, how can I provide a deafult value?


44             <DAISignInButton session={session} />```In my React component in TypeSCript, how can I provide a deafult value?

My code ```
export default function DAISignInButton({
  session,
  logoutButton = false,
}: {
  session: Session | null | undefined;
  logoutButton: boolean;
}): React.ReactElement {

The TS error:


44             <DAISignInButton session={session} />```The error `TS2741` indicates that the `logoutButton` property is required but is missing in the props provided to the `DAISignInButton` component. To fix this, you can provide a default value for the `logoutButton` property using default props in your React component.

Here’s how you can do it:

1. **UsingThe issue arises because TypeScript expects the `logoutButton` property to be provided when using the `DAISignInButton` component, even though you've given it a default value in the destructuring assignment. However, TypeScript does not infer the default values when checking for missing properties.

To resolve this, you can make the `logoutButton` property optional in the component's prop types. Here's how you can do it:

```typescript
type DAISignInButtonProps = {
  session: Session | null | undefined;
  logoutButton?: boolean;
};

export default function DAISignInButton({
  session,
  logoutButton = false,
}: DAISignInButtonProps): React.ReactElement {
  // component implementation
}

This way, logoutButton is optional, and if it's not provided, it will default to false.

Your component usage will not throw an error anymore:

<DAISignInButton session={session} />

The complete component code with the fix:

type DAISignInButtonProps = {
  session: Session | null | undefined;
  logoutButton?: boolean;
};

export default function DAISignInButton({
  session,
  logoutButton = false,
}: DAISignInButtonProps): React.ReactElement {
  // component implementation
}

Now, TypeScript recognizes that logoutButton is optional and will use the default value if it is not provided.

TS Default Value Fix created at Tue Jan 20 1970 20:35:08 GMT+0000 (Coordinated Universal Time)

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