Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | 1x 1x 1x 1x 1x 20x 20x 1x 19x 19x 19x 19x 19x 19x 18x 18x 17x 18x 1x 1x 1x | /**
* stream.js: Transport for outputting to any arbitrary stream.
*
* (C) 2010 Charlie Robbins
* MIT LICENCE
*/
'use strict';
const isStream = require('is-stream');
const { MESSAGE } = require('triple-beam');
const os = require('os');
const TransportStream = require('winston-transport');
/**
* Transport for outputting to any arbitrary stream.
* @type {Stream}
* @extends {TransportStream}
*/
module.exports = class Stream extends TransportStream {
/**
* Constructor function for the Console transport object responsible for
* persisting log messages and metadata to a terminal or TTY.
* @param {!Object} [options={}] - Options for this instance.
*/
constructor(options = {}) {
super(options);
if (!options.stream || !isStream(options.stream)) {
throw new Error('options.stream is required.');
}
// We need to listen for drain events when write() returns false. This can
// make node mad at times.
this._stream = options.stream;
this._stream.setMaxListeners(Infinity);
this.isObjectMode = options.stream._writableState.objectMode;
this.eol = options.eol || os.EOL;
}
/**
* Core logging method exposed to Winston.
* @param {Object} info - TODO: add param description.
* @param {Function} callback - TODO: add param description.
* @returns {undefined}
*/
log(info, callback) {
setImmediate(() => this.emit('logged', info));
if (this.isObjectMode) {
this._stream.write(info);
if (callback) {
callback(); // eslint-disable-line callback-return
}
return;
}
this._stream.write(`${info[MESSAGE]}${this.eol}`);
Iif (callback) {
callback(); // eslint-disable-line callback-return
}
return;
}
};
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