ffc-pay-etl-framework/dist/esm/transformers/fakerTransformer.js

A framework for creating ETL pipelines in node

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const { Transform } = require("node:stream");
/**
 *
 * @param {Object} options
 * @param {Array} options.columns {
 *           columns: [
 *               {
 *                   name: "column-name",
 *                   faker: "company.name"
 *               }
 *           ]
 *       }
 * @param {String} options.locale
 * @returns StreamReader
 */
function FakerTransformer(options) {
    let self = this;
    self.columns = options.columns;
    let faker;
    if (options.locale) {
        faker = require(`@faker-js/faker/locale/${options.locale}`).faker;
    }
    else {
        faker = require('@faker-js/faker').faker;
    }
    function getFaker(fakerType) {
        return fakerType.split('.').reduce((a, b) => {
            return Object.keys(a).length === 0 ? faker[b] : a[b];
        }, {});
    }
    return new Transform({
        readableObjectMode: true,
        writableObjectMode: true,
        transform(chunk, _, callback) {
            const { _columns } = chunk;
            self.columns.forEach(column => {
                const colIndex = _columns.indexOf(column.name);
                chunk[colIndex] = getFaker(column.faker)();
            });
            callback(null, chunk);
        }
    });
}
module.exports = {
    FakerTransformer
};