The valid-v-model throws an 'v-model' directives cannot update the iteration variable 'x' itself error, even if the iteration variable is not modified (3.14.0).

For example, the following case works perfectly:

v-for="i in 4" v-model="numbers[i]"

However, if we introduce a BinaryExpression, the error above will be produced:

v-for="i in 4" v-model="numbers[i - 1]"

I might be wrong, but I believe this construction should be allowed, as

• it works
• the error message does not fit the scenario (iteration variable is not modified)