Tagged

Logger for Node.js with styles and inheritance support.

npm install tagged

var tagged = require('tagged');

tagged.add('plain',   { trim: false });

tagged.add('em',      { style:  'i',
                        extend: 'plain' });

tagged.add('strong',  { style:  'b',
                        extend: 'plain' });

tagged.add('braces',  { borderStyle: 'none',
                        borderLeft:  '[ ',
                        borderRight: ' ] ',
                        width:        7,
                        align:       'center',
                        extend:      'plain' });

tagged.add('error',   { style:  'red, bright',
                        extend: 'braces' });

tagged.add('warning', { style:  'yellow, bright',
                        extend: 'braces' });

tagged.add('info',    { style:  'blue, bright',
                        extend: 'braces' });

tagged.add('success', { style:  'green, bright',
                        extend: 'braces' });

tagged.add('error2',  { borderRight: ': ' });

var tags = { error:   { error:   'error'  },
             warning: { warning: 'warning' },
             info:    { info:    'info' },
             success: { success: 'success' },
             error2:  { error2:  'my_program' } };

tagged(tags.error,   'Error message');
tagged(tags.warning, 'Some text');
tagged(tags.info,    'Info message 1');
tagged(tags.info,    'Info message 2');
tagged(tags.success, 'Completed');
tagged(tags.error2,  'Error decription');
tagged({ em: 'Some text.\n', plain: 'Some other text.\n', strong: 'Bold text.' });

API

tagged.add(name, options)

Add style definition.

• string name — style name.
• object options — style definition.
  • string extend — parent style name.
  • string style — style definition string.
  • string borderLeft — left border string.
  • string borderRight — right border string.
  • string borderStyle — style definition for borders.
  • number width — number of symbols of resulting string.
  • number digits — number of digits after comma.
  • number radix — radix desu.
  • boolean zero — fill left space with zeros.
  • boolean plus — add plus sign to positive numbers.
  • string align — horisontal align (left, center, right).
  • boolean trim — trim whitespace at start and end of string.
  • string overflow — overflow style if width is defined and string width greater then defined width (visible, hidden, ellipsis).

Style definition string

• Colors:
  • By name: black, red, green, yellow, blue, magenta, cyan, white.
  • By code: color(<0..255>). ANSI color code.
  • By HEX value: hex(<#rrggbb>). CSS-like color.
  • Background color: bg.red, bg.hex(#0080ff).
• Font styles:
  • Bold: bold, b, bright.
  • Italic: italic, i.
  • Underline: underline, u.
• Other:
  • blink;
  • inverse;
  • hidden.
  • Clear style: 0, unset, clear, off, none, default.

Style rules can be combined with comma: red, bg.hex(#0080ff), u, i.

tagged.remove(name)

Remove style definition.

• string name — style name.

tagged([<object>|<string>]*)

<object> can contain one or more name-value pairs. Example:

{
    em: 'Some text.\n',
    plain: 'Some other text.\n',
    strong: 'Bold text.'
}

TODO

• Write tests for extend property.
• Add chainable API.