Verse-reference-regex NPM

verse-reference-regex

Provides:

A regular expression that matches Bible verse references and ranges
A function that parses the captured groupings of that regular expression and returns it in a useful form

API

const {
	createRegex,
	extractRangeFromMatch,
	createChapterVerseRangeRegex
} = require('verse-reference-regex')

// or, ESM
import {
	createRegex,
	extractRangeFromMatch,
	createChapterVerseRangeRegex
} from 'verse-reference-regex'

`createRegex({ requireVerse = false, flags = 'i', books = canonBooks })`

createRegex takes in a map of options and returns a regular expression.

Options

requireVerse: if true, will only match references with a verse. If false, will match references and ranges with chapter numbers only, like Genesis 1 or Gen. 2-3. Defaults to false.
flags: flags to be used to create the RegExp. If you want to use the regex to match more than one reference in a string, you'll probably want to pass in 'ig'. Defaults to 'i'.
books: an array of books with their aliases. Defaults to books-of-the-bible.

`extractRangeFromMatch(match, books = canonBooks)`

Given a result array, like the ones returned by exec or match, it will return an object that looks like this:

{
	"book": "Genesis",
	"start": {
		"chapter": 2,
		"verse": null,
		"section": null
	},
	"end": {
		"chapter": 3,
		"verse": null,
		"section": null
	}
}

`createChapterVerseRangeRegex({ requireVerse = false, flags = 'i' })`

Matches only the chapter/verse range portion of a reference.

Use extractRangeFromMatch.extractRangeFromMatch(match) to read the values out of the match object.

const chapterVerseRegex = createChapterVerseRangeRegex()

const chapterVerseMatch = `Tell me about 12:30-14:1a y'all`.match(chapterVerseRegex)

const output = extractRangeFromMatch.chapterVerseRange(chapterVerseMatch)
const expected = {
	book: null,
	start: { chapter: 12, verse: 30, section: null },
	end: { chapter: 14, verse: 1, section: 'a' }
}
output // => expected

Examples

Setup for the examples:

function rangeString(range) {
	const { start, end } = range
	return `${range.book} c${start.chapter}v${start.verse}s'${start.section}' to `
		+ `c${end.chapter}v${end.verse}s'${end.section}'`
}

const verseRequiringRegex = createRegex({ requireVerse: true })

Searching for ranges:

const match = `I'm talking about Prov 30:2-3 yo`.match(verseRequiringRegex)

rangeString(extractRangeFromMatch(match)) // => `Proverbs c30v2s'null' to c30v3s'null'`

const match2 = `I'm not talking about Proverbs 30-31 at all, yo!`.match(verseRequiringRegex)

match2 // => null

A verse reference with no range:

const match3 = `Psalm 119:120b - I am afraid of Your judgments`.match(verseRequiringRegex)

rangeString(extractRangeFromMatch(match3)) // => `Psalms c119v120s'b' to c119v120s'b'`

Matching verse sections identified by letters:

const match4 = verseRequiringRegex.exec(`Proverbs 30:2a-b really speaks to me`)

rangeString(extractRangeFromMatch(match4)) // => `Proverbs c30v2s'a' to c30v2s'b'`

Matching ranges with only chapters, no verse numbers:

const match5 = createRegex().exec(`Doesn't require a verse to find the range Prov. 30-31`)
const range = extractRangeFromMatch(match5)

range.book // => 'Proverbs'
range.start.chapter // => 30
range.start.verse // => null
range.end.chapter // => 31

Replacing verse references with arbitrary text:

const replaced = `Tell me about Rev. 1:1-4a will you`.replace(verseRequiringRegex, (...args) => {
	const match = args.slice(0, args.length - 2)
	return rangeString(extractRangeFromMatch(match))
})
replaced // => `Tell me about Revelation c1v1s'null' to c1v4s'a' will you`

Book names

Book aliases (including ones with trailing periods) will be matched and normalized. You can find the default list of normalized book names and their aliases in the books-of-the-bible repository.