Fuzzy Dates

Fuzzy dates module for Histograph.

Input

One of the following:

• ISO 8601 date string (YYYY-MM-DD):

"2007-06-12"

• Single year (string or number):

1920, "1995"

• Object with a ISO 8601 date string and an error specification:

{
  date: '1962-10-10',
  error: '1M'
}

• Object with a year string/number and an error specification:

{
  date: '1970',
  error: '5y'
}

• String with year and error in years, of the form :year±:error:

"1995±5"

• Array of two years

[
  1930,
  1940
]

• Array of two ISO 8601 date strings

[
  "1912-03-04",
  "1912-03-26"
]

Error specification

{
  date: '1970',
  error: '1M'
}

• Date: either a year or an ISO 8601 date
• error units:
  • d: day
  • M: month
  • y: year

Fuzzy Dates uses Moment.js time shorthand keys (currently only days, months and years).

Output

• Array of two ISO 8601 dates

Example

Input:

{
  year: 1915,
  error: '3y'
}

Output:

[
  '1912-01-01',
  '1918-12-31'
]

See test/testDates.js for more examples, or run npm test.

Installation

npm install --save histograph/fuzzy-dates

Usage

var fd = require('fuzzy-dates');

var a = fd.convert('1995');

console.log(a); // => ["1995-01-01", "1995-12-31"]

Copyright (C) 2015 Waag Society.