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CHANGELOG

2.2.0

2020/06/21

  • [#90], [#91] Add option for using stable stringify when formatting as JSON.
  • [#84] Add replacer for BigInt on JSON formatter.
  • [#79] Timestamp format type definitions can accept functions.
  • Update dependencies and fix most of the oustanding npm audit notices.

2.1.2

2019/01/31

  • [#74] Remove all internal symbols before invoking util.inspect.
    • Related to [#31].

2.1.1

2019/01/29

2.1.0

2019/01/07

  • [#59], [#68], [#69] Add error normalizing format.
  • [#65] When MESSAGE symbol has a value and { all: true } is set, colorize the entire serialized message.

2.0.0

2018/12/23

  • BREAKING [#57] Try better fix for [winston#1485]. See: New splat behavior` below.
  • [#54] Fix typo in README.md
  • [#55] Strip info[LEVEL] in prettyPrint. Fixes [#31].
  • [#56] Document built-in formats.
  • [#64] Add TypeScript definitions for all format options. Relates to [#9] and [#48].

New splat behavior

Previously splat would have added a meta property for any additional info[SPLAT] beyond the expected number of tokens.

As of logform@2.0.0, format.splat assumes additional splat paramters (aka "metas") are objects and merges enumerable properties into the info. e.g.

const { format } = require('logform');
const { splat } = format;
const { MESSAGE, LEVEL, SPLAT } = require('triple-beam');

console.log(
  // Expects two tokens, but three splat parameters provided.
  splat().transform({
    level: 'info',
    message: 'Let us %s for %j',
    [LEVEL]: 'info',
    [MESSAGE]: 'Let us %s for %j',
    [SPLAT]: ['objects', { label: 'sure' }, { thisIsMeta: 'wut' }]
  })
);

// logform@1.x behavior:
// Added "meta" property.
//
// { level: 'info',
//   message: 'Let us objects for {"label":"sure"}',
//   meta: { thisIsMeta: 'wut' },
//   [Symbol(level)]: 'info',
//   [Symbol(message)]: 'Let us %s for %j',
//   [Symbol(splat)]: [ 'objects', { label: 'sure' } ] }

// logform@2.x behavior:
// Enumerable properties assigned into `info`.
//
// { level: 'info',
//   message: 'Let us objects for {"label":"sure"}',
//   thisIsMeta: 'wut',
//   [Symbol(level)]: 'info',
//   [Symbol(message)]: 'Let us %s for %j',
//   [Symbol(splat)]: [ 'objects', { label: 'sure' } ] }

The reason for this change is to be consistent with how winston itself handles meta objects in its variable-arity conventions.

BE ADVISED previous "metas" that were not objects will very likely lead to odd behavior. e.g.

const { format } = require('logform');
const { splat } = format;
const { MESSAGE, LEVEL, SPLAT } = require('triple-beam');

console.log(
  // Expects two tokens, but three splat parameters provided.
  splat().transform({
    level: 'info',
    message: 'Let us %s for %j',
    [LEVEL]: 'info',
    [MESSAGE]: 'Let us %s for %j',
    // !!NOTICE!! Additional parameters are a string and an Array
    [SPLAT]: ['objects', { label: 'sure' }, 'lol', ['ok', 'why']]
  })
);

// logform@1.x behavior:
// Added "meta" property.
//
// { level: 'info',
//   message: 'Let us objects for {"label":"sure"}',
//   meta: ['lol', ['ok', 'why']],
//   [Symbol(level)]: 'info',
//   [Symbol(message)]: 'Let us %s for %j',
//   [Symbol(splat)]: [ 'objects', { label: 'sure' } ] }

// logform@2.x behavior: Enumerable properties assigned into `info`.
// **Strings and Arrays only have NUMERIC enumerable properties!**
//
// { '0': 'ok',
//   '1': 'why',
//   '2': 'l',
//   level: 'info',
//   message: 'Let us objects for {"label":"sure"}',
//   [Symbol(level)]: 'info',
//   [Symbol(message)]: 'Let us %s for %j',
//   [Symbol(splat)]: [ 'objects', { label: 'sure' } ] }

1.10.0

2018/09/17

  • [#52] Add types field in package.json.
  • [#46], [#49] Changes for splat when there are no tokens present and no splat present.
  • [#47], [#53] Expose transpiled code for Browser-only scenarios.

1.9.1

2018/06/26

  • [#39] Don't break when there are % placeholders but no values.
  • [#42] Only set meta when non-zero additional SPLAT arguments are provided. (Fixes winstonjs/winston#1358).

1.9.0

2018/06/12

  • [#38] Migrate functionality from winston Logger to splat format.
  • [#37] Match expectations from winston@2.x for padLevels. Create a correct Cli format with initial state. (Fixes [#36]).

1.8.0

2018/06/11

  • [#35] Use fast-safe-stringify for perf and to support circular refs.
  • [#34] Colorize level symbol.

1.7.0

2018/05/24

  • [#28] Use more es6-features across the board.
  • [#30] Fix combine return value.
  • [#29] Add metadata function to format namespace.

1.6.0

2018/04/25

  • [#25] Implement padLevels format.
  • [#26] Update dependencies and add node@10 to the travis build of the project.
  • [#27] Refactor logform to use triple-beam.

1.5.0

2018/04/22

  • [#23], (@ChrisAlderson) Add ms format to support '+N ms' format. Fixes #20.
  • [#24], (@aneilbaboo) Fix webpack warnings.
  • Add .travis.yml.

1.4.2

2018/04/19

  • [#22], (@Jasu) Fix compilation on Babel 6.

1.4.1

2018/04/06

  • [#21], (@dabh) Add tsconfig.json. Fixes #19.

1.4.0

2018/03/23

  • [#14] @iamkirkbater Added Initial Metadata Support.
  • Correct JSDoc for printf.js. Fixes #10.

1.3.0

2018/03/16

  • [#18] Expose browser.js for rollup and the like. Fixes [#5].
  • [#13] @dabh Use new version of colors.
  • [#15] @dabh Add Typescript typings (ported from DefinitelyTyped).
  • [#17], [#16] Fix error messages other typos.

1.2.2

2017/12/05

  • [#4], [#11] Fix timestamp and replace date-fns with fecha (with test cases) [@ChrisAlderson].

1.2.1

2017/10/01

  • [#3] Strip info.splat in format.simple to avoid double inclusion.

1.2.0

2017/09/30

  • Transition from info.raw to info[Symbol.for('message')].
  • Finish README.md except for full list of all built-in formats.
  • 100% coverage for everything except for { align, cli, padLevels }.

1.1.0

2017/09/29

  • [#2] Add baseline expected formats that were previously exposed as options to common.log in winston@2.x and below.
  • [#2] Introduce format.combine to remove inconsistency in behavior between format(fn0) and format(fn0, ...moreFns).
  • [#2] README.md now covers all of the basics for logform.

1.0.0

2017/09/26

  • Initial release.