stromjs/dist/functions/split.js

Dependency-free streams utils for Node.js

"use strict";
exports.__esModule = true;
exports.split = void 0;
var stream_1 = require("stream");
var string_decoder_1 = require("string_decoder");
function split(separator, options) {
    if (separator === void 0) { separator = "\n"; }
    if (options === void 0) { options = {
        encoding: "utf8",
        objectMode: true
    }; }
    var buffered = "";
    var decoder = new string_decoder_1.StringDecoder(options.encoding);
    return new stream_1.Transform({
        readableObjectMode: true,
        transform: function (chunk, encoding, callback) {
            var _this = this;
            var asString = decoder.write(chunk);
            var splitData = asString.split(separator);
            if (splitData.length > 1) {
                splitData[0] = buffered.concat(splitData[0]);
                buffered = "";
            }
            buffered += splitData[splitData.length - 1];
            splitData.slice(0, -1).forEach(function (part) { return _this.push(part); });
            callback();
        },
        flush: function (callback) {
            callback(undefined, buffered + decoder.end());
        }
    });
}
exports.split = split;