step 1: calling local:qwen3.6:35b-a3b
tool shell <- {"command":"npm run --silent test 2>&1","timeoutMs":60000}
tool shell ok: exit code: 1
stdout:

Cleaning test artifacts...
(node:81) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
PASS test/unit/formats/errors.test.js
  format.errors (integration)
    ✓ logger.log(level, error) (20 ms)
    ✓ logger.log(level, error) [custom error properties]
    ✓ logger.log(level, error, meta) (1 ms)
    ✓ logger.log(level, error, meta) [custom error properties]
    ✓ logger.log(level, msg, meta<error>) (9 ms)
    ✓ logger.log(level, msg, meta<error>) [custom error properties] (1 ms)
    ✓ logger.<level>(error)
    ✓ logger.<level>(error) [custom error properties] (1 ms)
    ✓ logger.<level>(error, meta)
    ✓ logger.<level>(error, meta) [custom error properties]
    ✓ logger.<level>(msg, meta<error>) (1 ms)
    ✓ logger.<level>(msg, meta<error>) [custom error properties]
    ✓ Promise.reject().catch(logger.<level>) (1 ms)
    ✓ Promise.reject().catch(logger.<level>) [custom error properties]

(node:80) [DEP0187] DeprecationWarning: Passing invalid argument types to fs.existsSync is deprecated
(Use `node --trace-deprecation ...` to show where the warning was created)
(node:79) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
PASS test/unit/winston/transports/console.test.js
  Console transport
    ✓ { stderrLevels: ['info', 'error'] } logs to them appropriately
    ✓ { consoleWarnLevels: ['warn', 'debug'] } logs to them appropriately
    ✓ { eol } adds a custom EOL delimiter
    with defaults
      ✓ logs all levels to stdout
      ✓ should set stderrLevels to [] by default
    throws an appropriate error when
      ✓ if stderrLevels is set, but not an Array { stderrLevels: 'Not an Array' } (1 ms)
      ✓ if stderrLevels contains non-string elements { stderrLevels: ['good', /^invalid$/, 'valid']

FAIL test/unit/winston/logger.test.js
  Logger Instance
    Configuration
      ✓ .configure() (28 ms)
      ✓ .configure({ transports })
      ✓ .configure({ transports, format }) (1 ms)
    Get Highest Log Level
      ✓ should return the highest log level
    Is Log Level Enabled
      ✓ should indicate "error" level is enabled if logger is constructed with that level
      ✓ should indicate "warn" level is enabled if logger is constructed with that level
      ✓ should indicate "info" level is enabled if logger is constructed with that level
      ✓ should indicate "http" level is enabled if logger is constructed with that level (1 ms)
      ✓ should indicate "verbose" level is enabled if logger is constructed with that level
      ✓ should indicate "debug" level is enabled if logger is constructed with that level
      ✓ should indicate "silly" level is enabled if logger is constructed with that level
      ✓ should only enable levels "info" and above by default
      ✓ should indicate "null" level is not enabled (1 ms)
      ✓ should indicate "undefined" level is not enabled
      ✓ should indicate all levels are disabled if configured with a level of null
    Transports
      add
        ✓ should throw error when adding an invalid transport
        ✓ should add the expected transport (2 ms)
        ✓ should allow adding multiple transports (42 ms)
      remove
        ✓ should do nothing if transport was not added (1 ms)
        ✓ should remove transport when matching one is found
        ✓ should remove specified logger even when duplicate exists
      clear
        ✓ should do nothing when no transports exist
        ✓ should remove all transports
      stream
        ✓ should return a log stream for all transports
    Log Levels
      ✓ report unknown levels
      ✓ .<level>() (3 ms)
      ✓ default levels (1 ms)
      ✓ custom levels
      ✓ sets transports levels (1 ms)
      Log Levels Enabled
        ✓ default levels (1 ms)
        ✕ default levels, transport override (11 ms)
        ✓ default levels, no transports
        ✓ custom levels (1 ms)
        ✓ custom levels, no transports
        ✕ custom levels, transport override
    Transport Events
      ✓ 'finish' event awaits transports to emit 'finish' (2 ms)
      ✓ error
      ✓ warn
    Formats
      ✓ rethrows errors from user-defined formats (1 ms)
    Profiling
      ✓ ending profiler with object argument should be included in output (100 ms)
      ✓ calling profile with a callback function should not make a difference (100 ms)
      ✓ should stop a timer when `done` is called on it (106 ms)
    Logging non-primitive data types
      .log
        ✓ .log(new Error()) uses Error instance as info (1 ms)
        ✓ .info('Hello') preserve meta without splat format
        ✓ .info('Hello %d') does not mutate unnecessarily with string interpolation tokens
        ✓ .info('Hello') and .info('Hello %d') preserve meta with splat format (2 ms)
      .info
        ✓ .info(undefined) creates info with { message: undefined }
        ✓ .info(null) creates info with { message: null }
        ✓ .info(new Error()) uses Error instance as info
        ✎ todo https://github.com/winstonjs/winston/issues/2103
    Metadata Precedence
      Should support child loggers & defaultMeta
        ✓ sets child meta for text messages correctly (1 ms)
        ✓ sets child meta for json messages correctly
        ✓ merges child and provided meta correctly
        ✓ provided meta take precedence over defaultMeta
        ✓ provided meta take precedence over child meta
        ✓ handles error stack traces in child loggers correctly (1 ms)
        ✓ preserves prototype of info object in child logger (1 ms)
        ✓ defaultMeta() autobinds correctly
    Backwards Compatability
      Winston V2 Log
        ✓ .log(level, message)
        ✓ .log(level, undefined) creates info with { message: undefined }
        ✓ .log(level, null) creates info with { message: null }
        ✓ .log(level, new Error()) uses Error instance as info
        ✓ .log(level, message, meta) (1 ms)
        ✓ .log(level, formatStr, ...splat)
        ✓ .log(level, formatStr, ...splat, meta) (1 ms)
        ✓ .log(level, new Error()) creates info with error cause

  ● Logger Instance › Log Levels › Log Levels Enabled › default levels, transport override

    [1m[31mUnknown assertation failure occured, assumed `2` to equal (===) `5` [90m/work/test/unit/winston/logger.test.js[0m
        [31m                                                 v
        [90m451.         assume(logger.getHighestLogLevel).is.a('function');
        [0m452.         assume(logger.getHighestLogLevel()).equals(5);
        [90m453. 
        [31m                                                 ^[0m

      450 |
      451 |         assume(logger.getHighestLogLevel).is.a('function');
    > 452 |         assume(logger.getHighestLogLevel()).equals(5);
          |                                             ^
      453 |
      454 |         assume(logger.isLevelEnabled).is.a('function');
      455 |

      at Assume.equal (node_modules/assume/index.js:673:32)
      at Object.equals (test/unit/winston/logger.test.js:452:45)
      [0m

  ● Logger Instance › Log Levels › Log Levels Enabled › custom levels, transport override

    [1m[31mUnknown assertation failure occured, assumed `0` to equal (===) `2` [90m/work/test/unit/winston/logger.test.js[0m
        [31m                                                 v
        [90m584.         assume(logger.getHighestLogLevel).is.a('function');
        [0m585.         assume(logger.getHighestLogLevel()).equals(2);
        [90m586. 
        [31m                                                 ^[0m

      583 |
      584 |         assume(logger.getHighestLogLevel).is.a('function');
    > 585 |         assume(logger.getHighestLogLevel()).equals(2);
          |                                             ^
      586 |
      587 |         assume(logger.isLevelEnabled).is.a('function');
      588 |

      at Assume.equal (node_modules/assume/index.js:673:32)
      at Object.equals (test/unit/winston/logger.test.js:585:45)
      [0m

PASS test/unit/winston/log-exception.test.js
  Logger, ExceptionHandler
    ✓ Custom exitOnError function does not exit (1004 ms)
    .exceptions.unhandle()
      ✓ does not log to any transports (48 ms)
      ✓ handlers immutable (6 ms)
    Exception Handler
      should save the error information to the specified file
        ✓ with the default winston logger (511 ms)
        with a Custom Logger instance
          ✓ when strings are thrown as errors (516 ms)
          ✓ with a custom winston.Logger instance (508 ms)

PASS test/unit/winston/transports/http.test.js
  Http({ host, port, path })
    nominal
      ✓ should send logs over HTTP (9 ms)
    batch mode: max message
      ✓ test max message reached (2 ms)
    batch mode: timeout
      ✓ test timeout reached (2007 ms)
    circular structure
      ✓ should be able to handle options with circular structure (3 ms)
      ✓ should be able to handle options with circular structure when passing maximumDepth (3 ms)

PASS test/unit/winston/logger-legacy.test.js
  Deprecated APIs
    Instantiation Options
      ✓ should throw when instantiating with deprecated option of { colors: true }
      ✓ should throw when instantiating with deprecated option of { emitErrs: true }
      ✓ should throw when instantiating with deprecated option of { formatters: [] }
      ✓ should throw when instantiating with deprecated option of { padLevels: true } (1 ms)
      ✓ should throw when instantiating with deprecated option of { rewriters: [] }
      ✓ should throw when instantiating with deprecated option of { stripColors: true }
    Instance methods
      ✓ should throw when invoking deprecated cli() instance method
    Transports
      Transport inheriting from winston@2
        ✓ .add() is successful but logs deprecation notice
        ✓ .add() multiple transports is successful but logs deprecation notice
        ✓ .remove() is successful (1 ms)
      Transport inheriting from winston@3 but conforming to winston@2 API
        ✓ .add() is successful but logs deprecation notice
        ✓ .add() multiple transports is successful but logs deprecation notice
        ✓ .remove() is successful

PASS test/unit/winston/create-logger.test.js
  Create Logger
    ✓ should build a logger with default values
    ✓ new Logger({ silent: true })
    ✓ new Logger({ parameters })
    ✓ new Logger({ levels }) defines custom methods
    ✓ new Logger({ levels }) custom methods are not bound to instance

PASS test/unit/winston/transports/error.test.js
  transports issue 1364
    only log once
      ✓ logger transport has single correct transport (1 ms)
      ✓ error didn't
    log twice
      ✓ logger transport has single correct transport (1 ms)
      ✓ error occurred
    log thrice
      ✓ logger transport has single correct transport
      ✓ error occurred
    log four times
      ✓ logger transport has single correct transport
      ✓ other error occurred

PASS test/unit/winston/winston.test.js
  Winston
    ✓ should expose transports (1 ms)
    ✓ should have the expected initial state (1 ms)
    exposed interface
      ✓ should expose a method of "log()"
      ✓ should expose a method of "query()"
      ✓ should expose a method of "stream()"
      ✓ should expose a method of "add()"
      ✓ should expose a method of "remove()"
      ✓ should expose a method of "clear()"
      ✓ should expose a method of "profile()"
      ✓ should expose a method of "startTimer()"
      ✓ should expose a method of "handleExceptions()"
      ✓ should expose a method of "unhandleExceptions()"
      ✓ should expose a method of "handleRejections()"
      ✓ should expose a method of "unhandleRejections()"
      ✓ should expose a method of "configure()"
      ✓ should expose a method of "child()"
      ✓ should expose a method of "createLogger()"
      ✓ should expose a property of "level"
      ✓ should expose a property of "exceptions"
      ✓ should expose a property of "rejections"
      ✓ should expose a property of "exitOnError"
      ✓ should expose a level method of "error()" (1 ms)
      ✓ should expose a level method of "warn()"
      ✓ should expose a level method of "info()"
      ✓ should expose a level method of "http()"
      ✓ should expose a level method of "verbose()"
      ✓ should expose a level method of "debug()"
      ✓ should expose a level method of "silly()"
      ✓ exposes the configuration
      ✓ exposes the version
    Deprecated Winston properties from < v3.x
      ✓ should throw when the deprecated function "addRewriter()" is invoked
      ✓ should throw when the deprecated function "addFilter()" is invoked
      ✓ should throw when the deprecated function "cli()" is invoked
      ✓ should throw when the deprecated function "clone()" is invoked
      ✓ should throw when the deprecated function "extend()" is invoked
      ✓ should throw when the deprecated property "emitErrs" is accessed
      ✓ should throw when the deprecated property "levelLength" is accessed
      ✓ should throw when the deprecated property "padLevels" is accessed
      ✓ should throw when the deprecated property "stripColors" is accessed (1 ms)

PASS test/unit/winston/container.test.js
  Container
    no transports
      ✓ .add(default-test) (1 ms)
      ✓ .get(default-test)
      ✓ .has(default-test)
      ✓ .has(not-has)
      ✓ .close(default-test)
      ✓ .close(non-existent)
      ✓ .close()
    explicit transports
      ✓ .get(some-logger)
      ✓ .get(some-other-logger)
    explicit non-array transport
      ✓ .get(some-logger) (1 ms)
      ✓ .get(some-other-logger)

PASS test/unit/winston/exception-stream.test.js
  ExceptionStream
    ✓ has expected methods (1 ms)
    ✓ throws without a transport
    _write method
      ✓ should write to the transport when the exception property is false (1 ms)
      ✓ should not write to transport when the exception property is a falsy value of: "false"
      ✓ should not write to transport when the exception property is a falsy value of: "null"
      ✓ should not write to transport when the exception property is a falsy value of: "undefined"
      ✓ should not write to transport when the exception property is a falsy value of: "0"
      ✓ should not write to transport when the exception property is a falsy value of: ""
      ✓ should not write to transport when the exception property is a falsy value of: "NaN"

PASS test/unit/winston/transports/file.test.js (6.207 s)
  File Transport
    Construction
      ✓ should throw an error if conflicting options are provided (80 ms)
      ✓ should throw an error if conflicting options are provided (2 ms)
      ✓ should throw an error if conflicting options are provided (1 ms)
    Filename Option
      ✓ should log to the file with the given filename (23 ms)
      ✓ should reuse an existing file that is under maxsize on open (5 ms)
    Backpressure
      ✓ should wait for drain and requeue logs when the stream buffer fills (4 ms)
    Rotation Format option
      ✓ should create multiple files correctly with rotation Function (24 ms)
    Archive option
      ✓ should archive log file when max size is exceeded (62 ms)
      ✓ should not archive log file when max size is exceeded (62 ms)
    Maxsize option
      ✓ should create a new file the configured max size is exceeded (43 ms)
      ✓ should not exceed max size for any file (46 ms)
    Maxfiles option
      ✓ should not exceed the max files (5004 ms)
      ✓ should delete the oldest file when maxfiles is met (4 ms)
    Tailable option
      ✓ should write to original file and older files will be in ascending order (24 ms)
      ✓ should write to the newest file and older files will be in descending order (22 ms)
    Lazy option
      ✓ should not create log file until needed when lazy is enabled (2 ms)
      ✓ should create log files on initializaiton when lazy is enabled (22 ms)
    Stream Option
      ✎ todo should display the deprecation notice
      ✎ todo should write to the stream when logged to with expected object
    Flushing on end (issue #1504)
      ✓ should flush all messages to file when logger.end() is called (4 ms)
      ✓ should flush all messages when transport finish event is used (3 ms)

(node:80) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
PASS test/unit/winston/profiler.test.js
  Profiler
    ✓ new Profiler() (1 ms)
    ✓ .done({ info }) (201 ms)
    ✓ non logger object (1 ms)

PASS test/unit/winston/transports/stream.test.js
  Stream({ stream })
    ✓ should support objectMode streams (2 ms)
    ✓ should support UTF8 encoding streams (1 ms)
    ✓ should throw when not passed a stream

PASS test/unit/winston/transports/file-create-dir.test.js
  winston/transports/file/createLogDir
    ✓ should create directory if it does not exist (3 ms)
    ✓ should create directory if it does not exist when write to the stream (1 ms)

PASS test/integration/formats.test.js
  winston.format.colorize (Integration)
    ✓ non-TTY environment (48 ms)

PASS test/unit/winston/config/config.test.js
  winston.config
    ✓ should have expected methods (1 ms)

PASS test/unit/winston/rejection-handler.test.js
  UnhandledRejectionHandler
    basics
      ✓ has expected methods
      ✓ new RejectionHandler()
      ✓ new RejectionHandler(logger)
      ✓ .getProcessInfo()
      ✓ .getOsInfo()
      ✓ .getTrace(new Error) (4 ms)
      ✓ .getTrace() (1 ms)
      ✓ .getAllInfo(undefined)
    when error case is triggered
      ✓ .handle() (1 ms)

PASS test/integration/logger.test.js
  Logger class
    ✓ that Logger class is exported (1 ms)
    ✓ can be inherited

PASS test/unit/winston/exception-handler.test.js
  ExceptionHandler
    basics
      ✓ has expected methods
      ✓ new ExceptionHandler()
      ✓ new ExceptionHandler(logger) (1 ms)
      ✓ .getProcessInfo()
      ✓ .getOsInfo()
      ✓ .getTrace(new Error) (3 ms)
      ✓ .getTrace() (1 ms)
      ✓ .getAllInfo(undefined)
    when error case is triggered
      ✓ .handle() (1 ms)

PASS test/unit/winston/tail-file.test.js (5.06 s)
  tailFile
    ✓ is a function
    ✓ returns a stream that emits "line" for every line (4996 ms)

PASS test/unit/winston/transports/00-file-stress.test.js (40.523 s)
  File (stress)
    ✓ should handle a high volume of writes (10042 ms)
    ✓ should handle a high volume of large writes (10284 ms)
    ✓ should handle a high volume of large writes synchronous (10019 ms)
    ✓ should handle a high volume of writes with lazy option enabled (10117 ms)

A worker process has failed to exit gracefully and has been force exited. This is likely caused by tests leaking due to improper teardown. Try running with --detectOpenHandles to find leaks. Active timers can also cause this, ensure that .unref() was called on them.
Summary of all failing tests
FAIL test/unit/winston/logger.test.js
  ● Logger Instance › Log Levels › Log Levels Enabled › default levels, transport override

    [1m[31mUnknown assertation failure occured, assumed `2` to equal (===) `5` [90m/work/test/unit/winston/logger.test.js[0m
        [31m                                                 v
        [90m451.         assume(logger.getHighestLogLevel).is.a('function');
        [0m452.         assume(logger.getHighestLogLevel()).equals(5);
        [90m453. 
        [31m                                                 ^[0m

      450 |
      451 |         assume(logger.getHighestLogLevel).is.a('function');
    > 452 |         assume(logger.getHighestLogLevel()).equals(5);
          |                                             ^
      453 |
      454 |         assume(logger.isLevelEnabled).is.a('function');
      455 |

      at Assume.equal (node_modules/assume/index.js:673:32)
      at Object.equals (test/unit/winston/logger.test.js:452:45)
      [0m

  ● Logger Instance › Log Levels › Log Levels Enabled › custom levels, transport override

    [1m[31mUnknown assertation failure occured, assumed `0` to equal (===) `2` [90m/work/test/unit/winston/logger.test.js[0m
        [31m                                                 v
        [90m584.         assume(logger.getHighestLogLevel).is.a('function');
        [0m585.         assume(logger.getHighestLogLevel()).equals(2);
        [90m586. 
        [31m                                                 ^[0m

      583 |
      584 |         assume(logger.getHighestLogLevel).is.a('function');
    > 585 |         assume(logger.getHighestLogLevel()).equals(2);
          |                                             ^
      586 |
      587 |         assume(logger.isLevelEnabled).is.a('function');
      588 |

      at Assume.equal (node_modules/assume/index.js:673:32)
      at Object.equals (test/unit/winston/logger.test.js:585:45)
      [0m


Test Suites: 1 failed, 21 passed, 22 total
Tests:       2 failed, 3 todo, 235 passed, 240 total
Snapshots:   0 total
Time:        42.429 s
[evidence record sha256:aefc095d3de3a124c77e4cce4e39d5a4ed5b2f440d34c311098ee119d4e945d1 kind tool-call:shell]
tool list <- {"path":"."}
tool list ok: .babelrc
.editorconfig
.eslintrc
.git/
.gitattributes
.github/
.gitignore
.npmignore
.prettierrc
CHANGELOG.md
CODE_OF_CONDUCT.md
CONTRIBUTING.md
LICENSE
README.md
SECURITY.md
UPGRADE-3.0.md
docs/
eslint.config.cjs
examples/
index.d.ts
jest.config.js
lib/
node_modules/
package-lock.json
package.json
publishing.md
test/
tsconfig.json
[evidence record sha256:71eeabc63859b465ee69d667ae9a65ea52208ed2362885b78adc2e5dc50f15d1 kind tool-call:list]
step 2: calling local:qwen3.6:35b-a3b
tool read <- {"path":"test/unit/winston/logger.test.js","maxBytes":2000}
tool read ok: /*
 * logger.test.js: Tests for instances of the winston Logger
 *
 * (C) 2010 Charlie Robbins
 * MIT LICENSE
 *
 */

'use strict';

const assume = require('assume');
const path = require('path');
const { EOL } = require('os');
const isStream = require('is-stream');
const stdMocks = require('std-mocks');
const { MESSAGE, SPLAT } = require('triple-beam');
const winston = require('../../../lib/winston');
const TransportStream = require('winston-transport');
const format = require('../../../lib/winston').format;
const helpers = require('../../helpers');
const mockTransport = require('../../helpers/mocks/mock-transport');
const testLogFixturesPath = path.join(__dirname, '..', '..', 'fixtures', 'logs');

describe('Logger Instance', function () {
  describe('Configuration', function () {
    it('.configure()', function () {
      let logger = winston.createLogger({
        transports: [new winston.transports.Console()]
      });

      assume(logger.transports.length).equals(1);
      assume(logger.transports[0].name).equals('console');

      logger.configure();

      assume(logger.transports.length).equals(0);
    });

    it('.configure({ transports })', function () {
      let logger = winston.createLogger();

      assume(logger.transports.length).equals(0);

      logger.configure({
        transports: [new winston.transports.Console()]
      });

      assume(logger.transports.length).equals(1);
      assume(logger.transports[0].name).equals('console');
    });

    it('.configure({ transports, format })', function () {
      let logger = winston.createLogger(),
          format = logger.format;

      assume(logger.transports.length).equals(0);

      logger.configure({
        transports: [new winston.transports.Console()],
        format: winston.format.json()
      });

      assume(logger.transports.length).equals(1);
      assume(logger.transports[0].name).equals('console');
      assume(logger.format).not.equals(format);
    });
  });

  describe('Get Highe
[truncated at 2000 of 36790 bytes]
[evidence record sha256:feb755520d4fec309f1e37775d2b3d764cc0e0eba8a91e4b3b1ea2e60dda91a9 kind tool-call:read]
step 3: calling local:qwen3.6:35b-a3b
tool search <- {"pattern":"default levels, transport override","path":"test/unit/winston/logger.test.js"}
tool search failed: failed: ENOTDIR: not a directory, scandir '/work/test/unit/winston/logger.test.js', caused by ENOTDIR
[evidence record sha256:8ee6accd32ebd85171e8de35e61b9701efa656b4d0a1d721710e020653f24aa7 kind tool-call:search]
tool search <- {"pattern":"custom levels, transport override","path":"test/unit/winston/logger.test.js"}
tool search failed: failed: ENOTDIR: not a directory, scandir '/work/test/unit/winston/logger.test.js', caused by ENOTDIR
[evidence record sha256:704fb7134c6928761113a12b23e5a302feaac9dd7d6bd5352b33e78551ee4695 kind tool-call:search]
step 4: calling local:qwen3.6:35b-a3b
tool read <- {"path":"test/unit/winston/logger.test.js","maxBytes":5000}
tool read ok: /*
 * logger.test.js: Tests for instances of the winston Logger
 *
 * (C) 2010 Charlie Robbins
 * MIT LICENSE
 *
 */

'use strict';

const assume = require('assume');
const path = require('path');
const { EOL } = require('os');
const isStream = require('is-stream');
const stdMocks = require('std-mocks');
const { MESSAGE, SPLAT } = require('triple-beam');
const winston = require('../../../lib/winston');
const TransportStream = require('winston-transport');
const format = require('../../../lib/winston').format;
const helpers = require('../../helpers');
const mockTransport = require('../../helpers/mocks/mock-transport');
const testLogFixturesPath = path.join(__dirname, '..', '..', 'fixtures', 'logs');

describe('Logger Instance', function () {
  describe('Configuration', function () {
    it('.configure()', function () {
      let logger = winston.createLogger({
        transports: [new winston.transports.Console()]
      });

      assume(logger.transports.length).equals(1);
      assume(logger.transports[0].name).equals('console');

      logger.configure();

      assume(logger.transports.length).equals(0);
    });

    it('.configure({ transports })', function () {
      let logger = winston.createLogger();

      assume(logger.transports.length).equals(0);

      logger.configure({
        transports: [new winston.transports.Console()]
      });

      assume(logger.transports.length).equals(1);
      assume(logger.transports[0].name).equals('console');
    });

    it('.configure({ transports, format })', function () {
      let logger = winston.createLogger(),
          format = logger.format;

      assume(logger.transports.length).equals(0);

      logger.configure({
        transports: [new winston.transports.Console()],
        format: winston.format.json()
      });

      assume(logger.transports.length).equals(1);
      assume(logger.transports[0].name).equals('console');
      assume(logger.format).not.equals(format);
    });
  });

  describe('Get Highest Log Level', function () {
    it('should return the highest log level', function () {
      let logger = winston.createLogger();

      const highestLogLevel = logger.getHighestLogLevel();

      assume(highestLogLevel).equals(2);
    });
  });

  describe('Is Log Level Enabled', function () {
    const defaultLevelTestCases = [
      'error',
      'warn',
      'info',
      'http',
      'verbose',
      'debug',
      'silly'
    ];

    it.each(defaultLevelTestCases)('should indicate "%s" level is enabled if logger is constructed with that level', function (level) {
      let logger = winston.createLogger({level});

      const isLevelEnabled = logger.isLevelEnabled(level);

      assume(isLevelEnabled).to.be.true();
    });

    it('should only enable levels "info" and above by default', function () {
      let logger = winston.createLogger();

      const isHttpEnabled = logger.isLevelEnabled('http');
      const isInfoEnabled = logger.isLevelEnabled('info');
      const isWarnEnabled = logger.isLevelEnabled('warn');
      const isErrorEnabled = logger.isLevelEnabled('error');

      assume(isHttpEnabled).to.be.false();
      assume(isInfoEnabled).to.be.true();
      assume(isWarnEnabled).to.be.true();
      assume(isErrorEnabled).to.be.true();
    });

    const invalidLevelTestCases = [
      null,
      undefined
    ];
    it.each(invalidLevelTestCases)('should indicate "%s" level is not enabled', function (level) {
      let logger = winston.createLogger();

      const isLevelEnabled = logger.isLevelEnabled(level);

      assume(isLevelEnabled).to.be.false();
    });

    it('should indicate all levels are disabled if configured with a level of null', function () {
      const logger = winston.createLogger({ level: null });

      const levelEnabledResults = [];
      levelEnabledResults.push(logger.isLevelEnabled('silly'));
      levelEnabledResults.push(logger.isLevelEnabled('debug'));
      levelEnabledResults.push(logger.isLevelEnabled('verbose'));
      levelEnabledResults.push(logger.isLevelEnabled('http'));
      levelEnabledResults.push(logger.isLevelEnabled('info'));
      levelEnabledResults.push(logger.isLevelEnabled('warn'));
      levelEnabledResults.push(logger.isLevelEnabled('error'));

      const isEveryLevelDisabled = levelEnabledResults.every(result => result === false);
      assume(isEveryLevelDisabled).to.be.true();
    });
  });

  describe('Transports', function() {
    describe('add', function () {
      it('should throw error when adding an invalid transport', function () {
        let logger = winston.createLogger();
        assume(function () {
          logger.add(5);
        }).throws(/invalid transport/i);
      });

      it('should add the expected transport', function (done) {
        let logger = winston.createLogger();
        let expected = {message: 'foo', level: 'info'};
        let transport = new TransportStream({
          log: function (info) {
            assume(info.message).equals('foo
[truncated at 5000 of 36790 bytes]
[evidence record sha256:2629b8b3688cf45532078b0ba28933347762db68a1ca6db76a636ff89ceceb5d kind tool-call:read]
step 5: calling local:qwen3.6:35b-a3b
tool read <- {"path":"test/unit/winston/logger.test.js","maxBytes":3000}
tool read ok: /*
 * logger.test.js: Tests for instances of the winston Logger
 *
 * (C) 2010 Charlie Robbins
 * MIT LICENSE
 *
 */

'use strict';

const assume = require('assume');
const path = require('path');
const { EOL } = require('os');
const isStream = require('is-stream');
const stdMocks = require('std-mocks');
const { MESSAGE, SPLAT } = require('triple-beam');
const winston = require('../../../lib/winston');
const TransportStream = require('winston-transport');
const format = require('../../../lib/winston').format;
const helpers = require('../../helpers');
const mockTransport = require('../../helpers/mocks/mock-transport');
const testLogFixturesPath = path.join(__dirname, '..', '..', 'fixtures', 'logs');

describe('Logger Instance', function () {
  describe('Configuration', function () {
    it('.configure()', function () {
      let logger = winston.createLogger({
        transports: [new winston.transports.Console()]
      });

      assume(logger.transports.length).equals(1);
      assume(logger.transports[0].name).equals('console');

      logger.configure();

      assume(logger.transports.length).equals(0);
    });

    it('.configure({ transports })', function () {
      let logger = winston.createLogger();

      assume(logger.transports.length).equals(0);

      logger.configure({
        transports: [new winston.transports.Console()]
      });

      assume(logger.transports.length).equals(1);
      assume(logger.transports[0].name).equals('console');
    });

    it('.configure({ transports, format })', function () {
      let logger = winston.createLogger(),
          format = logger.format;

      assume(logger.transports.length).equals(0);

      logger.configure({
        transports: [new winston.transports.Console()],
        format: winston.format.json()
      });

      assume(logger.transports.length).equals(1);
      assume(logger.transports[0].name).equals('console');
      assume(logger.format).not.equals(format);
    });
  });

  describe('Get Highest Log Level', function () {
    it('should return the highest log level', function () {
      let logger = winston.createLogger();

      const highestLogLevel = logger.getHighestLogLevel();

      assume(highestLogLevel).equals(2);
    });
  });

  describe('Is Log Level Enabled', function () {
    const defaultLevelTestCases = [
      'error',
      'warn',
      'info',
      'http',
      'verbose',
      'debug',
      'silly'
    ];

    it.each(defaultLevelTestCases)('should indicate "%s" level is enabled if logger is constructed with that level', function (level) {
      let logger = winston.createLogger({level});

      const isLevelEnabled = logger.isLevelEnabled(level);

      assume(isLevelEnabled).to.be.true();
    });

    it('should only enable levels "info" and above by default', function () {
      let logger = winston.createLogger();

      const isHttpEnabled = logger.isLevelEnabled('http');
      const isInfoEnabled = logger.isLevelEnabled('info');
      const isWa
[truncated at 3000 of 36790 bytes]
[evidence record sha256:83b6d3f281e447ca343b86b4db89d2670404674e63650c95ed33d02de115769c kind tool-call:read]
step 6: calling local:qwen3.6:35b-a3b
tool shell <- {"command":"sed -n '420,500p' test/unit/winston/logger.test.js"}
tool shell ok: exit code: 0
stdout:
        assume(logger.isWarnEnabled).is.a('function');
        assume(logger.isInfoEnabled).is.a('function');
        assume(logger.isVerboseEnabled).is.a('function');
        assume(logger.isDebugEnabled).is.a('function');
        assume(logger.isSillyEnabled).is.a('function');

        assume(logger.isLevelEnabled('error')).true();
        assume(logger.isLevelEnabled('warn')).true();
        assume(logger.isLevelEnabled('info')).true();
        assume(logger.isLevelEnabled('verbose')).true();
        assume(logger.isLevelEnabled('debug')).false();
        assume(logger.isLevelEnabled('silly')).false();

        assume(logger.isErrorEnabled()).true();
        assume(logger.isWarnEnabled()).true();
        assume(logger.isInfoEnabled()).true();
        assume(logger.isVerboseEnabled()).true();
        assume(logger.isDebugEnabled()).false();
        assume(logger.isSillyEnabled()).false();
      });

      it('default levels, transport override', function () {
        let transport = new winston.transports.Console();
        transport.level = 'debug';

        let logger = winston.createLogger({
          level: 'info',
          levels: winston.config.npm.levels,
          transports: [transport]
        });

        assume(logger.getHighestLogLevel).is.a('function');
        assume(logger.getHighestLogLevel()).equals(5);

        assume(logger.isLevelEnabled).is.a('function');

        assume(logger.isErrorEnabled).is.a('function');
        assume(logger.isWarnEnabled).is.a('function');
        assume(logger.isInfoEnabled).is.a('function');
        assume(logger.isVerboseEnabled).is.a('function');
        assume(logger.isDebugEnabled).is.a('function');
        assume(logger.isSillyEnabled).is.a('function');

        assume(logger.isLevelEnabled('error')).true();
        assume(logger.isLevelEnabled('warn')).true();
        assume(logger.isLevelEnabled('info')).true();
        assume(logger.isLevelEnabled('verbose')).true();
        assume(logger.isLevelEnabled('debug')).true();
        assume(logger.isLevelEnabled('silly')).false();

        assume(logger.isErrorEnabled()).true();
        assume(logger.isWarnEnabled()).true();
        assume(logger.isInfoEnabled()).true();
        assume(logger.isVerboseEnabled()).true();
        assume(logger.isDebugEnabled()).true();
        assume(logger.isSillyEnabled()).false();
      });

      it('default levels, no transports', function () {
        let logger = winston.createLogger({
          level: 'verbose',
          levels: winston.config.npm.levels,
          transports: []
        });

        assume(logger.getHighestLogLevel).is.a('function');
        assume(logger.getHighestLogLevel()).equals(4);

        assume(logger.isLevelEnabled).is.a('function');

        assume(logger.isErrorEnabled).is.a('function');
        assume(logger.isWarnEnabled).is.a('function');
        assume(logger.isInfoEnabled).is.a('function');
        assume(logger.isVerboseEnabled).is.a('function');
        assume(logger.isDebugEnabled).is.a('function');
        assume(logger.isSillyEnabled).is.a('function');

        assume(logger.isLevelEnabled('error')).true();
        assume(logger.isLevelEnabled('warn')).true();
        assume(logger.isLevelEnabled('info')).true();
        assume(logger.isLevelEnabled('verbose')).true();
[evidence record sha256:59b0f733ce124e37113a3965b22c9814c8cbd64bcff111502e20ad75e62a08f7 kind tool-call:shell]
step 7: calling local:qwen3.6:35b-a3b
tool shell <- {"command":"sed -n '550,610p' test/unit/winston/logger.test.js"}
tool shell ok: exit code: 0
stdout:
        });

        assume(logger.getHighestLogLevel).is.a('function');
        assume(logger.getHighestLogLevel()).equals(1);

        assume(logger.isLevelEnabled).is.a('function');

        assume(logger.isBadEnabled).is.a('function');
        assume(logger.isTestEnabled).is.a('function');
        assume(logger.isOkEnabled).is.a('function');

        assume(logger.isLevelEnabled('bad')).true();
        assume(logger.isLevelEnabled('test')).true();
        assume(logger.isLevelEnabled('ok')).false();

        assume(logger.isBadEnabled()).true();
        assume(logger.isTestEnabled()).true();
        assume(logger.isOkEnabled()).false();
      });

      it('custom levels, transport override', function () {
        let transport = new winston.transports.Console();
        transport.level = 'ok';

        let logger = winston.createLogger({
          level: 'bad',
          levels: {
            bad: 0,
            test: 1,
            ok: 2
          },
          transports: [transport]
        });

        assume(logger.getHighestLogLevel).is.a('function');
        assume(logger.getHighestLogLevel()).equals(2);

        assume(logger.isLevelEnabled).is.a('function');

        assume(logger.isBadEnabled).is.a('function');
        assume(logger.isTestEnabled).is.a('function');
        assume(logger.isOkEnabled).is.a('function');

        assume(logger.isLevelEnabled('bad')).true();
        assume(logger.isLevelEnabled('test')).true();
        assume(logger.isLevelEnabled('ok')).true();

        assume(logger.isBadEnabled()).true();
        assume(logger.isTestEnabled()).true();
        assume(logger.isOkEnabled()).true();
      });
    })
  });

  describe('Transport Events', function () {
    it(`'finish' event awaits transports to emit 'finish'`, function (done) {
      const transports = [
        new TransportStream({
          log: function () {
          }
        }),
[evidence record sha256:bd8d257a476eb3f402c25f099430346d61ced6a11c764578a059e645d638f46b kind tool-call:shell]
step 8: calling local:qwen3.6:35b-a3b
tool search <- {"pattern":"getHighestLogLevel","path":"lib"}
tool search ok: lib/winston/logger.js:160: getHighestLogLevel() {
[evidence record sha256:da1c30ad1a5b9173fdab67a6c012251465e85a3d3009bd8ef6dc2c11cb7a05a6 kind tool-call:search]
step 9: calling local:qwen3.6:35b-a3b
tool read <- {"path":"lib/winston/logger.js","maxBytes":100}
tool read ok: /**
 * logger.js: TODO: add file header description.
 *
 * (C) 2010 Charlie Robbins
 * MIT LICENCE
 
[truncated at 100 of 20480 bytes]
[evidence record sha256:284719f6a8d1d0ed3adf444fddfa7c902fddc7f1d74f9ced8fb0ba1c3d325c3f kind tool-call:read]
step 10: calling local:qwen3.6:35b-a3b
tool read <- {"path":"lib/winston/logger.js","maxBytes":4000}
tool read ok: /**
 * logger.js: TODO: add file header description.
 *
 * (C) 2010 Charlie Robbins
 * MIT LICENCE
 */

'use strict';

const { Stream, Transform } = require('readable-stream');
const asyncForEach = require('async/forEach');
const { LEVEL, SPLAT } = require('triple-beam');
const isStream = require('is-stream');
const ExceptionHandler = require('./exception-handler');
const RejectionHandler = require('./rejection-handler');
const LegacyTransportStream = require('winston-transport/legacy');
const Profiler = require('./profiler');
const { warn } = require('./common');
const config = require('./config');

/**
 * Captures the number of format (i.e. %s strings) in a given string.
 * Based on `util.format`, see Node.js source:
 * https://github.com/nodejs/node/blob/b1c8f15c5f169e021f7c46eb7b219de95fe97603/lib/util.js#L201-L230
 * @type {RegExp}
 */
const formatRegExp = /%[scdjifoO%]/g;

/**
 * TODO: add class description.
 * @type {Logger}
 * @extends {Transform}
 */
class Logger extends Transform {
  /**
   * Constructor function for the Logger object responsible for persisting log
   * messages and metadata to one or more transports.
   * @param {!Object} options - foo
   */
  constructor(options) {
    super({ objectMode: true });
    this.configure(options);
  }

  child(defaultRequestMetadata) {
    const logger = this;
    return Object.create(logger, {
      write: {
        value: function (info) {
          const infoClone = Object.assign(
            Object.create(Object.getPrototypeOf(info)),
            defaultRequestMetadata,
            info
          );

          // Object.create preserves the prototype chain but
          // Object.assign doesn't copy inherited Error
          // properties so we have to do that explicitly
          //
          // Remark (indexzero): we should remove this
          // since the errors format will handle this case.
          //
          if (info instanceof Error) {
            infoClone.stack = info.stack;
            infoClone.message = info.message;
            infoClone.cause = info.cause;
          }

          logger.write(infoClone);
        }
      }
    });
  }

  /**
   * This will wholesale reconfigure this instance by:
   * 1. Resetting all transports. Older transports will be removed implicitly.
   * 2. Set all other options including levels, colors, rewriters, filters,
   *    exceptionHandlers, etc.
   * @param {!Object} options - TODO: add param description.
   * @returns {undefined}
   */
  configure({
    silent,
    format,
    defaultMeta,
    levels,
    level = 'info',
    exitOnError = true,
    transports,
    colors,
    emitErrs,
    formatters,
    padLevels,
    rewriters,
    stripColors,
    exceptionHandlers,
    rejectionHandlers
  } = {}) {
    // Reset transports if we already have them
    if (this.transports.length) {
      this.clear();
    }

    this.silent = silent;
    this.format = format || this.format || require('logform/json')();

    this.defaultMeta = defaultMeta || null;
    // Hoist other options onto this instance.
    this.levels = levels || this.levels || config.npm.levels;
    this.level = level;
    if (this.exceptions) {
      this.exceptions.unhandle();
    }
    if (this.rejections) {
      this.rejections.unhandle();
    }
    this.exceptions = new ExceptionHandler(this);
    this.rejections = new RejectionHandler(this);
    this.profilers = {};
    this.exitOnError = exitOnError;

    // Add all transports we have been provided.
    if (transports) {
      transports = Array.isArray(transports) ? transports : [transports];
      transports.forEach(transport => this.add(transport));
    }

    if (
      colors ||
      emitErrs ||
      formatters ||
      padLevels ||
      rewriters ||
      stripColors
    ) {
      throw new Error(
        [
          '{ colors, emitErrs, formatters, padLevels, rewriters, stripColors } were removed in winston@3.0.0.',
          'Use a custom winston.format(function) instead.',
          'S
[truncated at 4000 of 20480 bytes]
[evidence record sha256:413208e7d647122b8c303cb8ca9512387fdeadb7b747ec7eb26965787e70d3e5 kind tool-call:read]
step 11: calling local:qwen3.6:35b-a3b
tool read <- {"path":"lib/winston/logger.js","maxBytes":150}
tool read ok: /**
 * logger.js: TODO: add file header description.
 *
 * (C) 2010 Charlie Robbins
 * MIT LICENCE
 */

'use strict';

const { Stream, Transform } = r
[truncated at 150 of 20480 bytes]
[evidence record sha256:657fd713d477fc873d06457132c3b74bfb35955c17e81bc280a599373abdc74c kind tool-call:read]
step 12: calling local:qwen3.6:35b-a3b
tool shell <- {"command":"sed -n '155,180p' lib/winston/logger.js"}
tool shell ok: exit code: 0
stdout:
   * Helper method to get the highest logging level associated with a logger
   *
   * @returns { number | null } - The highest configured logging level, null
   * for invalid configuration
   */
  getHighestLogLevel() {
    // This can be null, if this.level has an invalid value
    const configuredLevelValue = getLevelValue(this.levels, this.level);

    // If there are no transports, return the level configured at the logger level
    if (!this.transports || this.transports.length !== 0) {
      return configuredLevelValue;
    }

    return this.transports.reduce((max, transport) => {
      const levelValue = getLevelValue(this.levels, transport.level);
      return levelValue !== null && levelValue > max ? levelValue : max;
    }, configuredLevelValue);
  }

  isLevelEnabled(level) {
    const givenLevelValue = getLevelValue(this.levels, level);
    if (givenLevelValue === null) {
      return false;
    }
[evidence record sha256:2a0886931ed539882e60cf6d5697b978ef1a8ccd4db38f50c2f236889be2fd0e kind tool-call:shell]
step 13: calling local:qwen3.6:35b-a3b
tool read <- {"path":"lib/winston/logger.js","maxBytes":512}
tool read ok: /**
 * logger.js: TODO: add file header description.
 *
 * (C) 2010 Charlie Robbins
 * MIT LICENCE
 */

'use strict';

const { Stream, Transform } = require('readable-stream');
const asyncForEach = require('async/forEach');
const { LEVEL, SPLAT } = require('triple-beam');
const isStream = require('is-stream');
const ExceptionHandler = require('./exception-handler');
const RejectionHandler = require('./rejection-handler');
const LegacyTransportStream = require('winston-transport/legacy');
const Profiler = re
[truncated at 512 of 20480 bytes]
[evidence record sha256:fe858b3ae0c64d54efc34da256d1d31028e80f87b902a5e26240643e63b93c92 kind tool-call:read]
step 14: calling local:qwen3.6:35b-a3b
tool declare_file_set <- {"files":["lib/winston/logger.js"]}
tool declare_file_set ok: declared 1 file(s): lib/winston/logger.js
[evidence record sha256:079cd1e5f7964791c19e54c4bf46fd5f388a8a68d648c00654f889e6a0ca3b41 kind tool-call:declare_file_set]
step 15: calling local:qwen3.6:35b-a3b
tool edit <- {"path":"lib/winston/logger.js","find":"if (!this.transports || this.transports.length !== 0) {","replace":"if (!this.transports || this.transports.length === 0) {"}
tool edit ok: replaced 1 occurrence(s) in lib/winston/logger.js
[evidence record sha256:a5598f592aae38cbab40a8b77f55bba900a5aae0c836945aa1eed8f16a67dd9b kind tool-call:edit]
step 16: calling local:qwen3.6:35b-a3b
tool shell <- {"command":"npm run --silent test 2>&1","timeoutMs":120000}
tool shell ok: exit code: 0
stdout:

Cleaning test artifacts...
(node:197) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
(node:196) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
(node:198) [DEP0187] DeprecationWarning: Passing invalid argument types to fs.existsSync is deprecated
(Use `node --trace-deprecation ...` to show where the warning was created)
PASS test/unit/winston/logger.test.js
  Logger Instance
    Configuration
      ✓ .configure() (5 ms)
      ✓ .configure({ transports })
      ✓ .configure({ transports, format })
    Get Highest Log Level
      ✓ should return the highest log level
    Is Log Level Enabled
      ✓ should indicate "error" level is enabled if logger is constructed with that level
      ✓ should indicate "warn" level is enabled if logger is constructed with that level (1 ms)
      ✓ should indicate "info" level is enabled if logger is constructed with that level
      ✓ should indicate "http" level is enabled if logger is constructed with that level
      ✓ should indicate "verbose" level is enabled if logger is constructed with that level
      ✓ should indicate "debug" level is enabled if logger is constructed with that level
      ✓ should indicate "silly" level is enabled if logger is constructed with that level
      ✓ should only enable levels "info" and above by default
      ✓ should indicate "null" level is not enabled
      ✓ should indicate "undefined" level is not enabled
      ✓ should indicate all levels are disabled if configured with a level of null
    Transports
      add
        ✓ should throw error when adding an invalid transport
        ✓ should add the expected transport (1 ms)
        ✓ should allow adding multiple transports (6 ms)
      remove
        ✓ should do nothing if transport was not added
        ✓ should remove transport when matching one is found
        ✓ should remove specified logger even when duplicate exists
      clear
        ✓ should do nothing when no transports exist (1 ms)
        ✓ should remove all transports
      stream
        ✓ should return a log stream for all transports
    Log Levels
      ✓ report unknown levels
      ✓ .<level>() (3 ms)
      ✓ default levels
      ✓ custom levels
      ✓ sets transports levels (1 ms)
      Log Levels Enabled
        ✓ default levels
        ✓ default levels, transport override (1 ms)
        ✓ default levels, no transports
        ✓ custom levels
        ✓ custom levels, no transports
        ✓ custom levels, transport override
    Transport Events
      ✓ 'finish' event awaits transports to emit 'finish'
      ✓ error
      ✓ warn (1 ms)
    Formats
      ✓ rethrows errors from user-defined formats
    Profiling
      ✓ ending profiler with object argument should be included in output (101 ms)
      ✓ calling profile with a callback function should not make a difference (101 ms)
      ✓ should stop a timer when `done` is called on it (102 ms)
    Logging non-primitive data types
      .log
        ✓ .log(new Error()) uses Error instance as info
        ✓ .info('Hello') preserve meta without splat format
        ✓ .info('Hello %d') does not mutate unnecessarily with string interpolation tokens
        ✓ .info('Hello') and .info('Hello %d') preserve meta with splat format (1 ms)
      .info
        ✓ .info(undefined) creates info with { message: undefined }
        ✓ .info(null) creates info with { message: null }
        ✓ .info(new Error()) uses Error instance as info (1 ms)
        ✎ todo https://github.com/winstonjs/winston/issues/2103
    Metadata Precedence
      Should support child loggers & defaultMeta
        ✓ sets child meta for text messages correctly
        ✓ sets child meta for json messages correctly (1 ms)
        ✓ merges child and provided meta correctly
        ✓ provided meta take precedence over defaultMeta (1 ms)
        ✓ provided meta take precedence over child meta (1 ms)
        ✓ handles error stack traces in child loggers correctly (17 ms)
        ✓ preserves prototype of info object in child logger (1 ms)
        ✓ defaultMeta() autobinds correctly
    Backwards Compatability
      Winston V2 Log
        ✓ .log(level, message) (1 ms)
        ✓ .log(level, undefined) creates info with { message: undefined }
        ✓ .log(level, null) creates info with { message: null }
        ✓ .log(level, new Error()) uses Error instance as info
        ✓ .log(level, message, meta)
        ✓ .log(level, formatStr, ...splat) (1 ms)
        ✓ .log(level, formatStr, ...splat, meta)
        ✓ .log(level, new Error()) creates info with error cause

PASS test/unit/winston/transports/file.test.js (6.065 s)
  File Transport
    Construction
      ✓ should throw an error if conflicting options are provided (10 ms)
      ✓ should throw an error if conflicting options are provided (2 ms)
      ✓ should throw an error if conflicting options are provided (1 ms)
    Filename Option
      ✓ should log to the file with the given filename (22 ms)
      ✓ should reuse an existing file that is under maxsize on open (1 ms)
    Backpressure
      ✓ should wait for drain and requeue logs when the stream buffer fills (2 ms)
    Rotation Format option
      ✓ should create multiple files correctly with rotation Function (23 ms)
    Archive option
      ✓ should archive log file when max size is exceeded (64 ms)
      ✓ should not archive log file when max size is exceeded (66 ms)
    Maxsize option
      ✓ should create a new file the configured max size is exceeded (45 ms)
      ✓ should not exceed max size for any file (45 ms)
    Maxfiles option
      ✓ should not exceed the max files (5016 ms)
      ✓ should delete the oldest file when maxfiles is met (10 ms)
    Tailable option
      ✓ should write to original file and older files will be in ascending order (36 ms)
      ✓ should write to the newest file and older files will be in descending order (28 ms)
    Lazy option
      ✓ should not create log file until needed when lazy is enabled (4 ms)
      ✓ should create log files on initializaiton when lazy is enabled (24 ms)
    Stream Option
      ✎ todo should display the deprecation notice
      ✎ todo should write to the stream when logged to with expected object
    Flushing on end (issue #1504)
      ✓ should flush all messages to file when logger.end() is called (11 ms)
      ✓ should flush all messages when transport finish event is used (7 ms)

(node:198) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
PASS test/unit/winston/tail-file.test.js (5.166 s)
  tailFile
    ✓ is a function (1 ms)
    ✓ returns a stream that emits "line" for every line (5105 ms)

PASS test/unit/winston/transports/http.test.js
  Http({ host, port, path })
    nominal
      ✓ should send logs over HTTP (6 ms)
    batch mode: max message
      ✓ test max message reached (2 ms)
    batch mode: timeout
      ✓ test timeout reached (2004 ms)
    circular structure
      ✓ should be able to handle options with circular structure (4 ms)
      ✓ should be able to handle options with circular structure when passing maximumDepth (3 ms)

PASS test/unit/formats/errors.test.js
  format.errors (integration)
    ✓ logger.log(level, error) (1 ms)
    ✓ logger.log(level, error) [custom error properties]
    ✓ logger.log(level, error, meta) (1 ms)
    ✓ logger.log(level, error, meta) [custom error properties]
    ✓ logger.log(level, msg, meta<error>) (5 ms)
    ✓ logger.log(level, msg, meta<error>) [custom error properties]
    ✓ logger.<level>(error) (1 ms)
    ✓ logger.<level>(error) [custom error properties]
    ✓ logger.<level>(error, meta)
    ✓ logger.<level>(error, meta) [custom error properties]
    ✓ logger.<level>(msg, meta<error>)
    ✓ logger.<level>(msg, meta<error>) [custom error properties] (1 ms)
    ✓ Promise.reject().catch(logger.<level>)
    ✓ Promise.reject().catch(logger.<level>) [custom error properties]

PASS test/unit/winston/profiler.test.js
  Profiler
    ✓ new Profiler()
    ✓ .done({ info }) (202 ms)
    ✓ non logger object (1 ms)

PASS test/unit/winston/logger-legacy.test.js
  Deprecated APIs
    Instantiation Options
      ✓ should throw when instantiating with deprecated option of { colors: true }
      ✓ should throw when instantiating with deprecated option of { emitErrs: true }
      ✓ should throw when instantiating with deprecated option of { formatters: [] }
      ✓ should throw when instantiating with deprecated option of { padLevels: true }
      ✓ should throw when instantiating with deprecated option of { rewriters: [] }
      ✓ should throw when instantiating with deprecated option of { stripColors: true }
    Instance methods
      ✓ should throw when invoking deprecated cli() instance method (1 ms)
    Transports
      Transport inheriting from winston@2
        ✓ .add() is successful but logs deprecation notice
        ✓ .add() multiple transports is successful but logs deprecation notice
        ✓ .remove() is successful (1 ms)
      Transport inheriting from winston@3 but conforming to winston@2 API
        ✓ .add() is successful but logs deprecation notice
        ✓ .add() multiple transports is successful but logs deprecation notice
        ✓ .remove() is successful

PASS test/unit/winston/log-exception.test.js
  Logger, ExceptionHandler
    ✓ Custom exitOnError function does not exit (1003 ms)
    .exceptions.unhandle()
      ✓ does not log to any transports (54 ms)
      ✓ handlers immutable (4 ms)
    Exception Handler
      should save the error information to the specified file
        ✓ with the default winston logger (503 ms)
        with a Custom Logger instance
          ✓ when strings are thrown as errors (518 ms)
          ✓ with a custom winston.Logger instance (507 ms)

PASS test/integration/formats.test.js
  winston.format.colorize (Integration)
    ✓ non-TTY environment (50 ms)

PASS test/unit/winston/transports/console.test.js
  Console transport
    ✓ { stderrLevels: ['info', 'error'] } logs to them appropriately
    ✓ { consoleWarnLevels: ['warn', 'debug'] } logs to them appropriately
    ✓ { eol } adds a custom EOL delimiter
    with defaults
      ✓ logs all levels to stdout
      ✓ should set stderrLevels to [] by default
    throws an appropriate error when
      ✓ if stderrLevels is set, but not an Array { stderrLevels: 'Not an Array' }
      ✓ if stderrLevels contains non-string elements { stderrLevels: ['good', /^invalid$/, 'valid'] (1 ms)

PASS test/unit/winston/transports/stream.test.js
  Stream({ stream })
    ✓ should support objectMode streams
    ✓ should support UTF8 encoding streams
    ✓ should throw when not passed a stream (1 ms)

PASS test/unit/winston/rejection-handler.test.js
  UnhandledRejectionHandler
    basics
      ✓ has expected methods
      ✓ new RejectionHandler()
      ✓ new RejectionHandler(logger)
      ✓ .getProcessInfo() (1 ms)
      ✓ .getOsInfo()
      ✓ .getTrace(new Error) (4 ms)
      ✓ .getTrace() (1 ms)
      ✓ .getAllInfo(undefined)
    when error case is triggered
      ✓ .handle() (3 ms)

PASS test/unit/winston/transports/file-create-dir.test.js
  winston/transports/file/createLogDir
    ✓ should create directory if it does not exist (3 ms)
    ✓ should create directory if it does not exist when write to the stream (2 ms)

PASS test/unit/winston/exception-stream.test.js
  ExceptionStream
    ✓ has expected methods (1 ms)
    ✓ throws without a transport (1 ms)
    _write method
      ✓ should write to the transport when the exception property is false
      ✓ should not write to transport when the exception property is a falsy value of: "false"
      ✓ should not write to transport when the exception property is a falsy value of: "null"
      ✓ should not write to transport when the exception property is a falsy value of: "undefined"
      ✓ should not write to transport when the exception property is a falsy value of: "0"
      ✓ should not write to transport when the exception property is a falsy value of: ""
      ✓ should not write to transport when the exception property is a falsy value of: "NaN"

PASS test/unit/winston/container.test.js
  Container
    no transports
      ✓ .add(default-test) (1 ms)
      ✓ .get(default-test)
      ✓ .has(default-test)
      ✓ .has(not-has)
      ✓ .close(default-test)
      ✓ .close(non-existent)
      ✓ .close()
    explicit transports
      ✓ .get(some-logger)
      ✓ .get(some-other-logger)
    explicit non-array transport
      ✓ .get(some-logger)
      ✓ .get(some-other-logger)

PASS test/integration/logger.test.js
  Logger class
    ✓ that Logger class is exported
    ✓ can be inherited

PASS test/unit/winston/exception-handler.test.js
  ExceptionHandler
    basics
      ✓ has expected methods (1 ms)
      ✓ new ExceptionHandler()
      ✓ new ExceptionHandler(logger)
      ✓ .getProcessInfo()
      ✓ .getOsInfo() (1 ms)
      ✓ .getTrace(new Error) (3 ms)
      ✓ .getTrace() (1 ms)
      ✓ .getAllInfo(undefined)
    when error case is triggered
      ✓ .handle() (1 ms)

PASS test/unit/winston/transports/error.test.js
  transports issue 1364
    only log once
      ✓ logger transport has single correct transport (1 ms)
      ✓ error didn't
    log twice
      ✓ logger transport has single correct transport
      ✓ error occurred (1 ms)
    log thrice
      ✓ logger transport has single correct transport
      ✓ error occurred
    log four times
      ✓ logger transport has single correct transport
      ✓ other error occurred (1 ms)

PASS test/unit/winston/winston.test.js
  Winston
    ✓ should expose transports (2 ms)
    ✓ should have the expected initial state
    exposed interface
      ✓ should expose a method of "log()"
      ✓ should expose a method of "query()"
      ✓ should expose a method of "stream()"
      ✓ should expose a method of "add()"
      ✓ should expose a method of "remove()"
      ✓ should expose a method of "clear()"
      ✓ should expose a method of "profile()"
      ✓ should expose a method of "startTimer()"
      ✓ should expose a method of "handleExceptions()"
      ✓ should expose a method of "unhandleExceptions()"
      ✓ should expose a method of "handleRejections()"
      ✓ should expose a method of "unhandleRejections()"
      ✓ should expose a method of "configure()"
      ✓ should expose a method of "child()"
      ✓ should expose a method of "createLogger()"
      ✓ should expose a property of "level"
      ✓ should expose a property of "exceptions"
      ✓ should expose a property of "rejections"
      ✓ should expose a property of "exitOnError"
      ✓ should expose a level method of "error()"
      ✓ should expose a level method of "warn()"
      ✓ should expose a level method of "info()"
      ✓ should expose a level method of "http()"
      ✓ should expose a level method of "verbose()"
      ✓ should expose a level method of "debug()"
      ✓ should expose a level method of "silly()"
      ✓ exposes the configuration
      ✓ exposes the version
    Deprecated Winston properties from < v3.x
      ✓ should throw when the deprecated function "addRewriter()" is invoked
      ✓ should throw when the deprecated function "addFilter()" is invoked (1 ms)
      ✓ should throw when the deprecated function "cli()" is invoked
      ✓ should throw when the deprecated function "clone()" is invoked
      ✓ should throw when the deprecated function "extend()" is invoked
      ✓ should throw when the deprecated property "emitErrs" is accessed
      ✓ should throw when the deprecated property "levelLength" is accessed
      ✓ should throw when the deprecated property "padLevels" is accessed
      ✓ should throw when the deprecated property "stripColors" is accessed

PASS test/unit/winston/create-logger.test.js
  Create Logger
    ✓ should build a logger with default values (1 ms)
    ✓ new Logger({ silent: true })
    ✓ new Logger({ parameters })
    ✓ new Logger({ levels }) defines custom methods
    ✓ new Logger({ levels }) custom methods are not bound to instance (1 ms)

PASS test/unit/winston/config/config.test.js
  winston.config
    ✓ should have expected methods

PASS test/unit/winston/transports/00-file-stress.test.js (41.032 s)
  File (stress)
    ✓ should handle a high volume of writes (10133 ms)
    ✓ should handle a high volume of large writes (10264 ms)
    ✓ should handle a high volume of large writes synchronous (9900 ms)
    ✓ should handle a high volume of writes with lazy option enabled (10118 ms)

A worker process has failed to exit gracefully and has been force exited. This is likely caused by tests leaking due to improper teardown. Try running with --detectOpenHandles to find leaks. Active timers can also cause this, ensure that .unref() was called on them.
Test Suites: 22 passed, 22 total
Tests:       3 todo, 237 passed, 240 total
Snapshots:   0 total
Time:        41.708 s
[evidence record sha256:9853ee7e6a984565fd78c1a0d709b5c70169a8db62114eb92942008f71216cc1 kind tool-call:shell]
step 17: calling local:qwen3.6:35b-a3b
tool claim <- {"predicate":"facts.exitCode == 0","record":"9853ee7e6a984565fd78c1a0d709b5c70169a8db62114eb92942008f71216cc1","recordKind":"tool-call:shell"}
tool claim failed: denied: input rejected: [
  {
    "origin": "string",
    "code": "invalid_format",
    "format": "regex",
    "pattern": "/^sha256:[0-9a-f]{64}$/",
    "path": [
      "record"
    ],
    "message": "Invalid string: must match pattern /^sha256:[0-9a-f]{64}$/"
  }
]
[evidence record sha256:cd5b38bdc624c928c0599f095c311e37e528cf54d0e57d42dbd24b6e4528f685 kind tool-call:claim]
step 18: calling local:qwen3.6:35b-a3b
tool claim <- {"predicate":"facts.exitCode == 0","record":"sha256:9853ee7e6a984565fd78c1a0d709b5c70169a8db62114eb92942008f71216cc1","recordKind":"tool-call:shell"}
tool claim ok: VERIFIED: the harness evaluated the predicate against the cited tool-call:shell record and it held
[evidence record sha256:c8dec3b92e028447457a12442e810395d44bc0135d3fd283d01f8b63aea96dee kind tool-call:claim]
step 19: calling local:qwen3.6:35b-a3b
claim (unverified): ## Summary

**Defect found:** In `lib/winston/logger.js`, line 169, the `getHighestLogLevel()` method had an inverted condition that caused it to return only the logger's configured level instead of considering transport-level filters when transports were present.

**Root cause:** The condition `this.transports.length !== 0` was meant to be `this.transports.length === 0`. With the typo, the early return happened *when transports existed* (the opposite case), meaning the reduce logic that checks transport levels was never reached.

**Fix:** Changed `!==` to `===`:
```diff
- if (!this.transports || this.transports.length !== 0) {
+ if (!this.transports || this.transports.length === 0) {
```

This ensures `getHighestLogLevel()` returns the logger's level only when there are no transports, and correctly scans all transports to find the highest (most permissive) log level when they exist. Both previously failing tests ("default levels, transport override" and "custom levels, transport override") now pass, and all 237 tests in the suite pass.
stopped: completed after 19 steps, 249994 tokens
gate typecheck not-applicable: package.json declares no typecheck script [evidence record sha256:2937696362f6458fe282589c221bc4c8fee1e95f3a2fcdf7bdda33a9c257023a]
gate lint passed: the command exited 0 [evidence record sha256:8c7452e01fe05a667ea758debbbd7ebb5c36f2f524e8f066748431cfb62b4e0b]
gate format not-applicable: package.json declares no check-only format script, and running a writing formatter as a gate would edit the tree it is judging [evidence record sha256:9b21ee9385ec49965029e8ae457e7fa57f61ec2cc75ef84219ddfa2809af47cb]
gate tests passed: the command exited 0 [evidence record sha256:a76a9c9c267420bd4f4c298eb17368a5ada16275a03d31cd57c568a0a104fa1b]
gate file-set passed: all 1 changed file(s) are inside the declared set of 1, and every one of them was declared before it was edited [evidence record sha256:e6ea2999fbbb4fdd5da32a5601594534599916ad451a30e8b31e2d8b0e1bfb94]
gate placeholder passed: no placeholder marker was introduced by this change [evidence record sha256:04cbfbf05767e77d5767fb5772e9a7e62cec4ae74d421e013fe257c5eccb892c]
gate secret-scan passed: no known credential pattern appears in the added lines [evidence record sha256:1205c218e3298f2b2a033cfedf23b7ee3ea0c6b62794e4df970e745e5f7a0cb4]
gate behaviour-probe passed: 0 changed function(s) still answer to their inputs. Not measured: lib/winston/logger.js (Cannot find module 'readable-stream'
Require stack:
- /home/campaign/.swarm/sessions/20260903T224434-9057fe/probe/behaviour-probe/base/lib/winston/logger.js). [evidence record sha256:6abe95b585d62a97034081590ad8020aa5fa98b216021a920ca4034d158513c3]
gate diff-budget passed (advisory): within budget: 1 file(s) and 1 added line(s) [evidence record sha256:ede4b1a546ba6f4583c33140cd1c857444d0095fb5d2eff66db7030505370e36]

gates:
  n/a      typecheck: package.json declares no typecheck script
  passed   lint: the command exited 0
  n/a      format: package.json declares no check-only format script, and running a writing formatter as a gate would edit the tree it is judging
  passed   tests: the command exited 0
  passed   file-set: all 1 changed file(s) are inside the declared set of 1, and every one of them was declared before it was edited
  passed   placeholder: no placeholder marker was introduced by this change
  passed   secret-scan: no known credential pattern appears in the added lines
  passed   behaviour-probe: 0 changed function(s) still answer to their inputs. Not measured: lib/winston/logger.js (Cannot find module 'readable-stream'
Require stack:
- /home/campaign/.swarm/sessions/20260903T224434-9057fe/probe/behaviour-probe/base/lib/winston/logger.js).
  passed   diff-budget (advisory): within budget: 1 file(s) and 1 added line(s)

routing reward: 0.364 (green with 0 retries, 210s, and $0.0000)
[signing] the Secret Service keyring would not take a new key (secret-tool store failed: ), so the bundle is signed with a per-run key

evidence bundle: /out/bundle
verify it anywhere: node /out/bundle/verify.mjs /out/bundle
review it: open /out/bundle/review.html
what this run produced

  the page a person reads: /out/bundle/review.html
  the bundle a stranger verifies: /out/bundle
  its own verifier, needing nothing installed: node /out/bundle/verify.mjs /out/bundle
  the chain every record is on: /out/bundle/ledger.jsonl

  85 records. The harness verified 1 claim(s) and refused 0.
  bundle verified in this run: verify.mjs exited 0
