It is expected have the error in the described scenario. When you sing filter expressions there are two thing that you must validate before applying it to the DataSource:
- the operator is valid, i.e has meaning for the target type. It doesn't make sense of using `contains
` for `numeric
- the value of the expressions is converted to the target type, i.e `searchText
` must be number / parseInt(searchText, 10)
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