@jsonlines/core/parse.js

parse and stringify jsonlines files through streams

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

require('core-js/modules/es.array.iterator');
require('core-js/modules/es.promise');
require('./_chunks/line-sep-69d200dd.js');
require('stream');
var duplexBase = require('./_chunks/duplex-base-8f9de019.js');
var readlineStream = require('./readline-stream.js');
require('core-js/modules/es.symbol.description');
var nullValue = require('./null-value.js');

function _interopNamespace(e) {
    if (e && e.__esModule) { return e; } else {
        var n = Object.create(null);
        if (e) {
            Object.keys(e).forEach(function (k) {
                if (k !== 'default') {
                    var d = Object.getOwnPropertyDescriptor(e, k);
                    Object.defineProperty(n, k, d.get ? d : {
                        enumerable: true,
                        get: function () {
                            return e[k];
                        }
                    });
                }
            });
        }
        n['default'] = e;
        return Object.freeze(n);
    }
}

function wrapParseFunc(parse) {
  return line => Promise.resolve(parse(line)).then(s => {
    if (s === null) return nullValue.nullValue;else return s;
  });
}

class JsonLinesParseStream extends duplexBase.AsyncDuplexBase {
  constructor(options) {
    var _options$lineSep, _options$parse;

    const gzip = options === null || options === void 0 ? void 0 : options.gzip;
    const readline = new readlineStream.ReadLineStream({
      encoding: options === null || options === void 0 ? void 0 : options.encoding,
      lineSep: (_options$lineSep = options === null || options === void 0 ? void 0 : options.lineSep) !== null && _options$lineSep !== void 0 ? _options$lineSep : "lf",
      parse: wrapParseFunc((_options$parse = options === null || options === void 0 ? void 0 : options.parse) !== null && _options$parse !== void 0 ? _options$parse : JSON.parse)
    });
    super({
      writable: gzip ? () => Promise.resolve().then(function () { return /*#__PURE__*/_interopNamespace(require('zlib')); }).then(zlib => {
        const gunzip = zlib.createGunzip(gzip === true ? undefined : gzip);
        gunzip.pipe(readline);
        return gunzip;
      }) : readline,
      readable: readline
    }, {
      readableObjectMode: true,
      writableObjectMode: false
    });
  }

}
function parse(...args) {
  return new JsonLinesParseStream(...args);
}

exports.JsonLinesParseStream = JsonLinesParseStream;
exports.parse = parse;
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