@hebcal/leyning

@hebcal/leyning

Javascript Torah Reading API for Parashat HaShavua and holidays

This package includes both traditional (full kriyah), triennial and weekday Torah readings.

“Many congregations pattern their weekly Torah reading cycle after a system similar to the one used in ancient Israel during the rabbinic period. In this system, the traditional parashiot are each divided into three shorter segments, and the whole Torah is completed once every three years. The system has both advantages and disadvantages, but its ability to shorten the length of Torah reading without sacrificing the complete reading of the Torah on a regular basis has made it the choice of some synagogues in the Conservative Movement.”

A Complete Triennial System for Reading the Torah, Committee on Jewish Law and Standards of the Rabbinical Assembly

Update December 2021: In November 2020, the CJLS modified the triennial cycle for some combined parshiyot to change the reading for year 3 to be the third section of the parashah.

Modification of the Triennial Cycle Readings for Combined Parashot in Certain Years, Rabbi Miles B. Cohen

Installation

$ npm install @hebcal/leyning

Synopsis

import {HebrewCalendar, HDate, Event} from '@hebcal/core';
import {getLeyningForParshaHaShavua, getTriennialForParshaHaShavua,
 formatAliyahWithBook} from '@hebcal/leyning';

const events = HebrewCalendar.calendar({sedrot: true, noHolidays: true});
const ev = events.find((ev) => ev.getDesc() == 'Parashat Pinchas');
const reading = getLeyningForParshaHaShavua(ev);
console.log(`${ev.getDesc()}: ${reading.summary}`);
console.log(`Haftara: ${reading.haftara}`);
for (const [num, aliyah] of Object.entries(reading.fullkriyah)) {
  const number = num == 'M' ? 'maftir' : `aliyah ${num}`;
  let str = formatAliyahWithBook(aliyah);
  if (reading.reason[num]) {
      str += ' | ' + reading.reason[num];
  }
  str += ` (${aliyah.v} verses)`;
  console.log(`${number}: ${str}`);
}
const triReading = getTriennialForParshaHaShavua(ev);
for (const [num, aliyah] of Object.entries(triReading)) {
  const number = num == 'M' ? 'maftir' : `aliyah ${num}`;
  const str = formatAliyahWithBook(aliyah);
  console.log(`Triennial ${number}: ${str}`);
}

Classes

Triennial

Triennial Torah readings

Constants

BOOK

Names of the books of the Torah. BOOK[1] === 'Genesis'

Functions

addSefariaLinksToLeyning(aliyot, showBook)

Makes Sefaria links by adding href, verses and num attributes to each aliyah. CAUTION: Modifies the aliyot parameter instead of making a copy.

getLeyningKeyForEvent(e, [il]) ⇒ string

Based on the event date, type and title, finds the relevant leyning key

getLeyningForHoliday(e, [il]) ⇒ Leyning

Looks up leyning for a given holiday. Returns some of full kriyah aliyot, special Maftir, special Haftarah

makeLeyningSummary(aliyot) ⇒ string

Makes a summary of the leyning, like "Genesis 6:9-11:32"

getLeyningForHolidayKey(key) ⇒ Leyning

Looks up leyning for a given holiday key. Key should be an (untranslated) string used in holiday-readings.json. Returns some of full kriyah aliyot, special Maftir, special Haftarah

getLeyningForParsha(parsha) ⇒ Leyning

Looks up regular leyning for a weekly parsha with no special readings

getLeyningForParshaHaShavua(ev, [il]) ⇒ Leyning

Looks up leyning for a regular Shabbat parsha.

formatAliyahWithBook(a) ⇒ string

Formats an aliyah object like "Numbers 28:9-28:15"

formatAliyahShort(aliyah, showBook) ⇒ string

Formats an aliyah object like "Numbers 28:9-15"

getTriennial(year) ⇒ Triennial

Calculates the 3-year readings for a given year

getTriennialForParshaHaShavua(ev, [context]) ⇒ TriennialAliyot | Object.<string, Aliyah>

Looks up the triennial leyning for this Parashat HaShavua

Typedefs

Aliyah : Object

Represents an aliyah

Leyning : Object

Leyning for a parsha hashavua or holiday

TriennialAliyot : Object

Represents triennial aliyot for a given date

Triennial

Triennial Torah readings

Kind: global class

• Triennial
  • new Triennial([hebrewYear])
  • instance
    • .getReading(parsha, yearNum) ⇒ Object.<string, Aliyah>
    • .getStartYear() ⇒ number
    • .debug() ⇒ string
  • static
    • .getYearNumber(year) ⇒ number
    • .getCycleStartYear(year) ⇒ number

new Triennial([hebrewYear])

Builds a Triennial object

Param	Type	Description
[hebrewYear]	number	Hebrew Year (default current year)

triennial.getReading(parsha, yearNum) ⇒ Object.<string, Aliyah>

Kind: instance method of Triennial
Returns: Object.<string, Aliyah> - a map of aliyot 1-7 plus "M"

Param	Type	Description
parsha	string	parsha name ("Bereshit" or "Achrei Mot-Kedoshim")
yearNum	number	0 through 2 for which year of Triennial cycle

triennial.getStartYear() ⇒ number

Kind: instance method of Triennial

triennial.debug() ⇒ string

Kind: instance method of Triennial

Triennial.getYearNumber(year) ⇒ number

Returns triennial year 1, 2 or 3 based on this Hebrew year

Kind: static method of Triennial

Param	Type	Description
year	number	Hebrew year

Triennial.getCycleStartYear(year) ⇒ number

Returns Hebrew year that this 3-year triennial cycle began

Kind: static method of Triennial

Param	Type	Description
year	number	Hebrew year

BOOK

Names of the books of the Torah. BOOK[1] === 'Genesis'

Kind: global constant

addSefariaLinksToLeyning(aliyot, showBook)

Deprecated

Makes Sefaria links by adding href, verses and num attributes to each aliyah. CAUTION: Modifies the aliyot parameter instead of making a copy.

Kind: global function

Param	Type	Description
aliyot	Object.<string, Aliyah>	aliyah map to decorate
showBook	boolean	display the book name in the verses field (e.g. for special Maftir)

getLeyningKeyForEvent(e, [il]) ⇒ string

Based on the event date, type and title, finds the relevant leyning key

Kind: global function
Returns: string - key to look up in holiday-reading.json

Param	Type	Default	Description
e	Event		event
[il]	boolean	false	true if Israel holiday scheme

getLeyningForHoliday(e, [il]) ⇒ Leyning

Looks up leyning for a given holiday. Returns some of full kriyah aliyot, special Maftir, special Haftarah

Kind: global function
Returns: Leyning - map of aliyot

Param	Type	Default	Description
e	Event		the Hebcal event associated with this leyning
[il]	boolean	false	true if Israel holiday scheme

makeLeyningSummary(aliyot) ⇒ string

Makes a summary of the leyning, like "Genesis 6:9-11:32"

Kind: global function

Param	Type
aliyot	Object.<string, Aliyah>

getLeyningForHolidayKey(key) ⇒ Leyning

Looks up leyning for a given holiday key. Key should be an (untranslated) string used in holiday-readings.json. Returns some of full kriyah aliyot, special Maftir, special Haftarah

Kind: global function
Returns: Leyning - map of aliyot

Param	Type	Description
key	string	name from holiday-readings.json to find

getLeyningForParsha(parsha) ⇒ Leyning

Looks up regular leyning for a weekly parsha with no special readings

Kind: global function
Returns: Leyning - map of aliyot

Param	Type	Description
parsha	string | Array.<string>	untranslated name like 'Pinchas' or ['Pinchas'] or ['Matot','Masei']

getLeyningForParsha~result : Leyning

Kind: inner constant of getLeyningForParsha

getLeyningForParshaHaShavua(ev, [il]) ⇒ Leyning

Looks up leyning for a regular Shabbat parsha.

Kind: global function
Returns: Leyning - map of aliyot

Param	Type	Default	Description
ev	Event		the Hebcal event associated with this leyning
[il]	boolean	false	in Israel

formatAliyahWithBook(a) ⇒ string

Formats an aliyah object like "Numbers 28:9-28:15"

Kind: global function

Param	Type	Description
a	Aliyah	aliyah

formatAliyahShort(aliyah, showBook) ⇒ string

Formats an aliyah object like "Numbers 28:9-15"

Kind: global function

Param	Type
aliyah	Aliyah
showBook	boolean

getTriennial(year) ⇒ Triennial

Calculates the 3-year readings for a given year

Kind: global function

Param	Type	Description
year	number	Hebrew year

getTriennialForParshaHaShavua(ev, [context]) ⇒ TriennialAliyot | Object.<string, Aliyah>

Looks up the triennial leyning for this Parashat HaShavua

Kind: global function
Returns: TriennialAliyot | Object.<string, Aliyah> - a map of aliyot 1-7 plus "M"

Param	Type	Default	Description
ev	Event
[context]	boolean	false	returns a reading wrapper object which includes date, yearNum and aliyot

getTriennialForParshaHaShavua~reason

Kind: inner constant of getTriennialForParshaHaShavua
Todo

• update unit tests instead

Aliyah : Object

Represents an aliyah

Kind: global typedef
Properties

Name	Type	Description
k	string	Book (e.g. "Numbers")
b	string	beginning verse (e.g. "28:9")
e	string	ending verse (e.g. "28:15")
[v]	number	number of verses
[p]	number	parsha number (1=Bereshit, 54=Vezot HaBracha)

Leyning : Object

Leyning for a parsha hashavua or holiday

Kind: global typedef
Properties

Name	Type	Description
summary	string
haft	Aliyah	Haftarah
haftara	string	Haftarah
[haftaraNumV]	number
[seph]	Aliyah	Haftarah for Sephardic
[sephardic]	string	Haftarah for Sephardic
[sephardicNumV]	number
fullkriyah	Object.<string, Aliyah>
[weekday]	Object.<string, Aliyah>
[reason]	Object

TriennialAliyot : Object

Represents triennial aliyot for a given date

Kind: global typedef
Properties

Name	Type	Description
aliyot	Object.<string, Aliyah>	a map of aliyot 1-7 plus "M"
yearNum	number	year number, 0-2
date	Date	Shabbat date for when this parsha is read in this 3-year cycle
[readSeparately]	boolean	true if a double parsha is read separately in year yearNum
[date1]	Date	Shabbat date of the first part of a read-separately aliyah pair
[date2]	Date	Shabbat date of the second part of a read-separately aliyah pair