### experimental_async_required
```
Cannot use `%name%(...)` unless the `experimental.async` compiler option is `true`
```
### invalid_default_snippet
```
Cannot use `{@render children(...)}` if the parent component uses `let:` directives. Consider using a named snippet instead
```
This error would be thrown in a setup like this:
```svelte
{entry}
```
```svelte
{#each items as item}
{@render children(item)}
{/each}
```
Here, `List.svelte` is using `{@render children(item)` which means it expects `Parent.svelte` to use snippets. Instead, `Parent.svelte` uses the deprecated `let:` directive. This combination of APIs is incompatible, hence the error.
### invalid_snippet_arguments
```
A snippet function was passed invalid arguments. Snippets should only be instantiated via `{@render ...}`
```
### invariant_violation
```
An invariant violation occurred, meaning Svelte's internal assumptions were flawed. This is a bug in Svelte, not your app — please open an issue at https://github.com/sveltejs/svelte, citing the following message: "%message%"
```
### lifecycle_outside_component
```
`%name%(...)` can only be used during component initialisation
```
Certain lifecycle methods can only be used during component initialisation. To fix this, make sure you're invoking the method inside the _top level of the instance script_ of your component.
```svelte
```
### missing_context
```
Context was not set in a parent component
```
The [`createContext()`](svelte#createContext) utility returns a `[get, set]` pair of functions. `get` will throw an error if `set` was not used to set the context in a parent component.
### snippet_without_render_tag
```
Attempted to render a snippet without a `{@render}` block. This would cause the snippet code to be stringified instead of its content being rendered to the DOM. To fix this, change `{snippet}` to `{@render snippet()}`.
```
A component throwing this error will look something like this (`children` is not being rendered):
```svelte
{children}
```
...or like this (a parent component is passing a snippet where a non-snippet value is expected):
```svelte
{#snippet label()}
Hi!
{/snippet}
```
```svelte
{label}
```
### store_invalid_shape
```
`%name%` is not a store with a `subscribe` method
```
### svelte_element_invalid_this_value
```
The `this` prop on `` must be a string, if defined
```