Errors are sometimes thrown with "warn" option

[](https://oss.issuehunt.io/r/gajus/flow-runtime/issues/113)

This is a:

- [x] Bug Report

Which concerns:

- [x] flow-runtime

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### What is the current behaviour?

With the `warn: true` option, some invariants may still throw errors, for example this one: https://github.com/codemix/flow-runtime/blob/13e72fcc064bb6060c9ba49c58be3efe2f20ff40/packages/flow-runtime/src/flowTypes/%24ShapeType.js#L64

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### What is the expected behaviour?

Runtime should log a warning.

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### Which package versions are you using?

flow-runtime: 0.12

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`warn` function (https://github.com/codemix/flow-runtime/blob/8bfdd7461f34d74bcb60247bf9b4b5644ab9e3b0/packages/flow-runtime/src/TypeContext.js#L1004) runs validation, but doesn't protect it from thrown errors

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IssueHunt Summary

### Backers (Total: $20.00)

- [ issuehunt](https://oss.issuehunt.io/u/issuehunt) ($20.00)

### Submitted pull Requests
- [#299 fix: avoid throwing in warn mode when validation internals fail](https://oss.issuehunt.io/r/gajus/flow-runtime/pull/299)
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