ferngully-aurelia-tools/dist/es2017/resources/valueConverters/null-if-empty.js

Ferngully Tools for Aurelia

export class NullIfEmptyValueConverter {
    fromView(value, trimString = true) {
        if (value instanceof String) {
            if (trimString) {
                value = value.trim();
            }
            return value === "" ? null : value;
        }
        else {
            return value.length === 0 ? null : value;
        }
    }
}
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