@eddaic/nestjs-decorators/int/transformer/int.transformer.js

Additional decorators intended for use with NestJS framework.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.transformInt = transformInt;
exports.transformIntArray = transformIntArray;
exports.TransformInt = TransformInt;
const class_transformer_1 = require("class-transformer");
const class_validator_1 = require("class-validator");
const util_1 = require("../util");
function transformInt(value, options) {
    if (!(0, class_validator_1.isEmpty)(value)) {
        const numberValue = Number(value);
        if ((0, class_validator_1.isInt)(numberValue)) {
            return numberValue;
        }
        else if (options?.rounding !== undefined) {
            return (0, util_1.round)(numberValue, options.rounding);
        }
    }
    return null;
}
function transformIntArray(values, options) {
    return values.map((value) => transformInt(value, options));
}
/**
 * Transform value into integer using specified options. If the value
 * is null, empty or undefined, it will return null.
 *
 * Otherwise an integer value will be returned rounded as necessary
 * using the specified rounding policy.
 * @param options {@link TransformIntOptions}
 * @returns
 */
function TransformInt(options = {}) {
    const { each = false, ...rest } = options;
    return (0, class_transformer_1.Transform)(({ value }) => each && (0, class_validator_1.isArray)(value)
        ? transformIntArray(value, rest)
        : transformInt(value, rest), rest);
}