@davidwells/parse-time

Parse messy time strings into JavaScript Date objects.

Installation

npm install @davidwells/parse-time

Usage

const { parseTime } = require('@davidwells/parse-time');

// Parse specific dates and times
const date1 = parseTime('January 15th 2024 at 3:30pm');
console.log(date1.toISOString()); // 2024-01-15T15:30:00.000Z

// Parse relative times
const now = new Date('2023-01-01T12:00:00Z');
const date2 = parseTime('in 2 hours', { now });
console.log(date2.toISOString()); // 2023-01-01T14:00:00.000Z

// Parse special keywords
const date3 = parseTime('today at 5pm', { now });
console.log(date3.toISOString()); // 2023-01-01T17:00:00.000Z

// Parse "never" (returns far future date)
const never = parseTime('never');
console.log(never.toISOString()); // 9999-12-31T00:00:00.000Z

// Parse "now" (returns current time)
const currentTime = parseTime('now');
console.log(currentTime.toISOString()); // Current time in ISO format

// Parse unix timestamp
const timestamp = 1672574400; // 2023-01-01T12:00:00Z
const date4 = parseTime(timestamp);
console.log(date4.toISOString()); // 2023-01-01T12:00:00.000Z

// Parse Date object
const dateObj = new Date('2023-05-15T10:30:00Z');
const date5 = parseTime(dateObj);
console.log(date5.toISOString()); // 2023-05-15T10:30:00.000Z

Supported Formats

The library supports a wide variety of time formats:

• Specific dates and times: January 15th 2024 at 3:30pm, Dec 25 2023 midnight, July 4 2023 noon
• Relative times: in 2 hours, 3 days ago, next week, next month
• Special keywords: today at 5pm, yesterday noon, tomorrow at midnight
• Time of day: 11am, 11pm, 12:30am, 12:30pm
• Days of the week: this friday, next monday, last tuesday
• Specific dates: oct 22nd 1987, 3pm oct 22nd 1987, the 22nd of october, 1987 at 7pm
• Holidays: 4th of july, 9pm on the 4th of july
• Relative periods: in 12 minutes, in 2 hours, in 31 hours, in 20 hours 40 minutes
• Decimal periods: in 20.2h, in 1.5 weeks
• Longer periods: in 5 weeks, in 2 years, in 2 years and 5 weeks
• Past periods: 2 days ago, 2 days and 6 hours ago, 1 month ago, 14 days ago
• ISO format: 2015-10-31, 2015-10-31 20:30, 2015-10-31 8:30pm

Options

The parseTime function accepts an options object as its second parameter:

const options = {
  now: new Date() // Reference date for relative time calculations
}

const date = parseTime('tomorrow at noon', options)

About

Fork of https://github.com/substack/parse-messy-time/blob/master/index.js

License

MIT