deno

642118fd - fix(core) Include causes when converting anyhow errors to JS exceptions (#16397)

fix(core) Include causes when converting anyhow errors to JS exceptions (#16397) When an op returns an `anyhow` error with a cause (usually added using the `.context()` method), the `Error` thrown into JavaScript contains only the message of the outernmost error in the chain. This PR simply changes the formatting of `anyhow::Error` from `"{}"` to `"{:#}"`: This significantly improves errors for code that embeds Deno and defines custom ops. For example, in [chiselstrike/chiselstrike](https://github.com/chiselstrike/chiselstrike), this PR improves an error message like ``` Error: could not plan migration ``` to ``` Error: could not plan migration: could not migrate table for entity "E": could not add column for field "title": the field does not have a default value ```