@katze/ngx-input-default-value/fesm2015/katze-ngx-input-default-value.js

A decorator that set default values to your component inputs and properties

import { isNil, isObject, isArray, defaultsDeep } from 'lodash-es';

/**
 * Sets a given default value to the decorated property when his value is "null" or "undefined".
 * In case the type of the decorated property is "Array" or "Object" it will do assignment recursively for all properties or cells.
 *
 * @param {T} defaultValue - A default value to use for the decorated property.
 * @return {PropertyDecorator}
 */
function InputDefaultValue(defaultValue) {
    return (target, propertyKey, descriptor = {
        configurable: true,
        enumerable: true
    }) => {
        const privatePropertyKey = `_${propertyKey}`;
        const originalSetter = descriptor.set || (val => (target[privatePropertyKey] = val));
        descriptor.get = descriptor.get || (() => target[privatePropertyKey]);
        descriptor.set = (value) => {
            if (isNil(value)) {
                originalSetter.call(target, defaultValue);
            }
            else if (isObject(defaultValue) || isArray(defaultValue)) {
                originalSetter.call(target, defaultsDeep(value, defaultValue));
            }
            else {
                originalSetter.call(target, value);
            }
        };
        originalSetter.call(target, defaultValue);
        return descriptor;
    };
}

/**
 * Generated bundle index. Do not edit.
 */

export { InputDefaultValue };
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