AUR0174

Error Message

AUR0174: Expression error: arrow function with default parameters is not supported: "{{expression}}"

Description

Aurelia binding expressions do not support arrow functions with default parameter values.

Example Trigger

<!-- ❌ Default parameter -->
<div textcontent.bind="(a = 1) => a + 1"></div>

Solution

• Remove default parameters and implement defaults in view-model code.