@ngdoc error
@name linky:notstring
@fullName Not a string
@description

This error occurs when {@link ngSanitize.linky linky} is used with a non-empty, non-string value:
```html
<div ng-bind-html="42 | linky"></div>
```

`linky` is supposed to be used with string values only, and therefore assumes that several methods
(such as `.match()`) are available on the passed in value.
The value can be initialized asynchronously and therefore null or undefined won't throw this error.

If you want to pass non-string values to `linky` (e.g. Objects whose `.toString()` should be
utilized), you need to manually convert them to strings.