Install & Use
npm i vv-logger-tinyconst logger = require('vv-logger-tiny').create(__dirname)
// or
// const logger = require('./index.js').create(__dirname, {level: 'trace', file_name_mask: 'app_${yyyymmdd}.log', days_life: 4, write_to_console: true})
// warning!!! in file_name_mask supported only one date mask - ${yyyymmdd}!!!
logger.trace('hello, trace!')
logger.debug('hello, debug!')
logger.error('hello, error!')
logger.error(new Error('hello, error!'))
logger.debug('user {0} delete document #{1}', {replace: ['Mark', '42']})
logger.error('error when user {0} delete document #{1}', {replace: ['Mark', '42'], traces: new Error('some error')})Classes
Typedefs
-
type_log_level :
'trace'|'debug'|'error' -
logger level, default = 'debug'. if = 'trace', log work with ['trace','debug','error'], if = 'debug' - ['debug','error'], if 'error' - only 'error'
- constructor_options
-
logger options
- message_options
-
message options
-
callback_error :
function
App
Kind: global class
new App(path, [options])
| Param | Type | Description |
|---|---|---|
| path | string |
where store log files, default = __dirname |
| [options] | constructor_options |
additional options |
app._env : _partial.type_env
Kind: instance property of App
app.get_path() ⇒ string
Kind: instance method of App
app.set_option_days_life(days_life)
Kind: instance method of App
| Param | Type |
|---|---|
| days_life | number |
app.set_option_write_to_console(write_to_console)
Kind: instance method of App
| Param | Type |
|---|---|
| write_to_console | boolean |
app.set_option_level(level)
Kind: instance method of App
| Param | Type |
|---|---|
| level | type_log_level |
app.trace(message, [options])
Kind: instance method of App
| Param | Type |
|---|---|
| message | string |
| [options] | message_options |
app.debug(message, [options])
Kind: instance method of App
| Param | Type |
|---|---|
| message | string |
| [options] | message_options |
app.error(message, [options])
Kind: instance method of App
| Param | Type |
|---|---|
| message |
string | Error
|
| [options] | message_options |
app.save_to_file_force([callback])
Kind: instance method of App
| Param | Type |
|---|---|
| [callback] | callback_error |
type_log_level : 'trace' | 'debug' | 'error'
logger level, default = 'debug'. if = 'trace', log work with ['trace','debug','error'], if = 'debug' - ['debug','error'], if 'error' - only 'error'
constructor_options
logger options
Kind: global typedef
Properties
| Name | Type | Description |
|---|---|---|
| [file_name_mask] | string |
mask file name for store logger, default = 'app_${yyyymmdd}.log', where '${yyyymmdd}' - date write log. if mask without '${yyyymmdd}', delete old log files not working |
| [days_life] | number |
number of days for which log files will be stored, default = 4, only current date = 1, disable delete old log files = 0. you can change it in an already created class in method set_option_days_life |
| [write_to_console] | boolean |
write log to file and console (true) or in file only (false), default = true. you can change it in an already created class in method set_option_write_to_console |
| level | type_log_level |
logger level, default = 'debug'. if = 'trace', log work with ['trace','debug','error'], if = 'debug' - ['debug','error'], if 'error' - only 'error'. you can change it in an already created class in method set_option_level |
message_options
message options
Kind: global typedef
Properties
| Name | Type | Description |
|---|---|---|
| [replace] |
string | Array.<string>
|
for example: message = 'step #{0} where {1}', replace = [4, 'i create new file'], text result = 'step #4 where i create new file' |
| [traces] |
string | Error | Array.<string> | Array.<Error>
|
big attachment to message, for example - error with full stack |
callback_error : function
Kind: global typedef
| Param | Type |
|---|---|
| error | Error |