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# `Referencing 'constructor' Field in Expression`
error in component `$parse`

    Referencing "constructor" field in Angular expressions is disallowed! Expression: {0}

## Description

Occurs when an expression attempts to access an objects constructor field.

AngularJS bans constructor access from within expressions since constructor access is a known way to execute arbitrary Javascript code.

To resolve this error, avoid constructor access. As a last resort, alias the constructor and access it through the alias instead.

Example expression that would result in this error:

    <div>{{user.constructor.name}}</div>