remove support for winston2 and methods supported by winston2 (#221)

.travis.yml

@@ -6,7 +6,6 @@ node_js:
   - "10"
 
 env:
-  - WINSTON_VER=winston@2
   - WINSTON_VER=winston@3
 
 before_install:

daily-rotate-file.js

@@ -4,14 +4,11 @@ var fs = require('fs');
 var os = require('os');
 var path = require('path');
 var util = require('util');
-var semver = require('semver');
 var zlib = require('zlib');
 var hash = require('object-hash');
-var winston = require('winston');
-var compat = require('winston-compat');
 var MESSAGE = require('triple-beam').MESSAGE;
 var PassThrough = require('stream').PassThrough;
-var Transport = semver.major(winston.version) === 2 ? compat.Transport : require('winston-transport');
+var Transport = require('winston-transport');
 
 var loggerDefaults = {
     json: false,
@@ -127,29 +124,13 @@ util.inherits(DailyRotateFile, Transport);
 DailyRotateFile.prototype.name = 'dailyRotateFile';
 
 var noop = function () {};
-if (semver.major(winston.version) === 2) {
-    DailyRotateFile.prototype.log = function (level, msg, meta, callback) {
-        callback = callback || noop;
-        var options = Object.assign({}, this.options, {
-            level: level,
-            message: msg,
-            meta: meta
-        });
-
-        var output = compat.log(options) + options.eol;
-        this.logStream.write(output);
-        callback(null, true);
-    };
-} else {
-    DailyRotateFile.prototype.normalizeQuery = compat.Transport.prototype.normalizeQuery;
-    DailyRotateFile.prototype.log = function (info, callback) {
-        callback = callback || noop;
+DailyRotateFile.prototype.log = function (info, callback) {
+    callback = callback || noop;
 
-        this.logStream.write(info[MESSAGE] + this.options.eol);
-        this.emit('logged', info);
-        callback(null, true);
-    };
-}
+    this.logStream.write(info[MESSAGE] + this.options.eol);
+    this.emit('logged', info);
+    callback(null, true);
+};
 
 DailyRotateFile.prototype.close = function () {
     var self = this;
@@ -159,134 +140,3 @@ DailyRotateFile.prototype.close = function () {
         });
     }
 };
-
-DailyRotateFile.prototype.query = function (options, callback) {
-    if (typeof options === 'function') {
-        callback = options;
-        options = {};
-    }
-
-    if (!this.options.json) {
-        throw new Error('query() may not be used without the json option being set to true');
-    }
-
-    if (!this.filename) {
-        throw new Error('query() may not be used when initializing with a stream');
-    }
-
-    var self = this;
-    var results = [];
-    options = self.normalizeQuery(options);
-
-    var logFiles = (function () {
-        var fileRegex = new RegExp(self.filename.replace('%DATE%', '.*'), 'i');
-        return fs.readdirSync(self.dirname).filter(function (file) {
-            return path.basename(file).match(fileRegex);
-        });
-    })();
-
-    if (logFiles.length === 0 && callback) {
-        callback(null, results);
-    }
-
-    (function processLogFile(file) {
-        if (!file) {
-            return;
-        }
-
-        var logFile = path.join(self.dirname, file);
-        var buff = '';
-
-        var stream;
-
-        if (file.endsWith('.gz')) {
-            stream = new PassThrough();
-            fs.createReadStream(logFile).pipe(zlib.createGunzip()).pipe(stream);
-        } else {
-            stream = fs.createReadStream(logFile, {
-                encoding: 'utf8'
-            });
-        }
-
-        stream.on('error', function (err) {
-            if (stream.readable) {
-                stream.destroy();
-            }
-
-            if (!callback) {
-                return;
-            }
-
-            return err.code === 'ENOENT' ? callback(null, results) : callback(err);
-        });
-
-        stream.on('data', function (data) {
-            data = (buff + data).split(/\n+/);
-            var l = data.length - 1;
-
-            for (var i = 0; i < l; i++) {
-                add(data[i]);
-            }
-
-            buff = data[l];
-        });
-
-        stream.on('end', function () {
-            if (buff) {
-                add(buff, true);
-            }
-
-            if (logFiles.length) {
-                processLogFile(logFiles.shift());
-            } else if (callback) {
-                results.sort(function (a, b) {
-                    var d1 = new Date(a.timestamp).getTime();
-                    var d2 = new Date(b.timestamp).getTime();
-
-                    return d1 > d2 ? 1 : d1 < d2 ? -1 : 0;
-                });
-
-                if (options.order === 'desc') {
-                    results = results.reverse();
-                }
-
-                var start = options.start || 0;
-                var limit = options.limit || results.length;
-
-                results = results.slice(start, start + limit);
-
-                if (options.fields) {
-                    results = results.map(function (log) {
-                        var obj = {};
-                        options.fields.forEach(function (key) {
-                            obj[key] = log[key];
-                        });
-                        return obj;
-                    });
-                }
-
-                callback(null, results);
-            }
-        });
-
-        function add(buff, attempt) {
-            try {
-                var log = JSON.parse(buff);
-                if (!log || typeof log !== 'object') {
-                    return;
-                }
-
-                var time = new Date(log.timestamp);
-                if ((options.from && time < options.from) || (options.until && time > options.until)) {
-                    return;
-                }
-
-                results.push(log);
-            } catch (e) {
-                if (!attempt) {
-                    stream.emit('error', e);
-                }
-            }
-        }
-    })(logFiles.shift());
-};

package.json

@@ -29,7 +29,7 @@
   },
   "homepage": "https://github.com/winstonjs/winston-daily-rotate-file#readme",
   "peerDependencies": {
-    "winston": "^2 || ^3"
+    "winston": "^3"
   },
   "devDependencies": {
     "chai": "4.2.0",
@@ -42,9 +42,7 @@
   "dependencies": {
     "file-stream-rotator": "^0.4.1",
     "object-hash": "^1.3.0",
-    "semver": "^6.2.0",
     "triple-beam": "^1.3.0",
-    "winston-compat": "^0.1.4",
     "winston-transport": "^4.2.0"
   }
 }