@russ-b/nestjs-common-tools/dist/class-transformer/to-optional-number.decorator.js

NestJS utility tools

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseOptionalNumberTransformer = void 0;
exports.ToOptionalNumber = ToOptionalNumber;
const class_transformer_1 = require("class-transformer");
function ToOptionalNumber() {
    return (0, class_transformer_1.Transform)(exports.parseOptionalNumberTransformer);
}
const parseOptionalNumberTransformer = ({ value, }) => normalizeOptionalNumber(value);
exports.parseOptionalNumberTransformer = parseOptionalNumberTransformer;
function normalizeOptionalNumber(value) {
    if (value === null) {
        return null;
    }
    if (value === undefined) {
        return undefined;
    }
    if (typeof value === 'string') {
        const trimmedValue = value.trim();
        return trimmedValue === '' ? undefined : Number(trimmedValue);
    }
    if (typeof value === 'number') {
        return value;
    }
    return Number.NaN;
}
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