@afuadajo/csv-validator/build/index.js

A CSV validator library for Node.js

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
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      desc = { enumerable: true, get: function() { return m[k]; } };
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    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
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var __exportStar = (this && this.__exportStar) || function(m, exports) {
    for (var p in m) if (p !== "default" && !Object.prototype.hasOwnProperty.call(exports, p)) __createBinding(exports, m, p);
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var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const papaparse_1 = __importDefault(require("papaparse"));
class CSVValidator {
    constructor(validations = {}) {
        this.validations = validations;
    }
    parse(csvData, options = {}) {
        var _a;
        const results = papaparse_1.default.parse(csvData, Object.assign({ header: true, skipEmptyLines: true }, options));
        if ((_a = results === null || results === void 0 ? void 0 : results.errors) === null || _a === void 0 ? void 0 : _a.length) {
            throw new Error(`Parsing errors: ${JSON.stringify(results.errors)}`);
        }
        const { data } = results;
        const validationResults = this.validateRows(data);
        return {
            data: validationResults.data,
            errors: validationResults.errors,
        };
    }
    getHeaders() {
        return Object.keys(this.validations);
    }
    validateRows(rows) {
        const data = [];
        const errors = [];
        rows.forEach((row, rowIndex) => {
            const rowErrors = this.validateRow(row);
            if (rowErrors.length) {
                row.errors = rowErrors;
                errors.push({
                    row: rowIndex + 1,
                    errors: rowErrors,
                });
            }
            row.idx = rowIndex + 1;
            data.push(row);
        });
        return { data, errors };
    }
    validateRow(row) {
        const rowErrors = [];
        Object.entries(this.validations).forEach(([column, rules]) => {
            const value = row[column];
            if (rules.required && !value) {
                rowErrors.push(`${column} is required`);
            }
            if (rules.email && value && !/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(value)) {
                rowErrors.push(`${column} must be a valid email`);
            }
            if (rules.custom && value && typeof rules.custom === 'function') {
                const customError = rules.custom(value);
                if (customError) {
                    rowErrors.push(customError);
                }
            }
        });
        return rowErrors;
    }
}
__exportStar(require("./validators"), exports);
exports.default = CSVValidator;