flesch-kincaid
v2.0.1
Published
Formula to detect the grade level of text according to Flesch-Kincaid Grade Level (1975)
Downloads
3,924
Readme
flesch-kincaid
Formula to detect the grade level of text according to the Flesch–Kincaid grade level.
Contents
What is this?
This package exposes an algorithm to detect ease of reading of English texts.
When should I use this?
You’re probably dealing with natural language, and know you need this, if you’re here!
This algorithm is based on syllables, whereas some others are not, which means it’s tougher to get right and slower to calculate. See syllable for detecting syllables.
Install
This package is ESM only. In Node.js (version 14.14+, 16.0+), install with npm:
npm install flesch-kincaid
In Deno with esm.sh
:
import {fleschKincaid} from 'https://esm.sh/flesch-kincaid@2'
In browsers with esm.sh
:
<script type="module">
import {fleschKincaid} from 'https://esm.sh/flesch-kincaid@2?bundle'
</script>
Use
import {fleschKincaid} from 'flesch-kincaid'
// For “The Australian platypus is seemingly a hybrid of a mammal and reptilian
// creature.” (1 sentence, 13 words, 26 syllables).
fleschKincaid({sentence: 1, word: 13, syllable: 26})
// => 13.08
API
This package exports the identifier fleschKincaid
.
There is no default export.
fleschKincaid(counts)
Given an object containing the number of words (word
), the number of sentences
(sentence
), and the number of syllables (syllable
) in a document, returns
the U.S. grade level associated with the document.
counts
Counts from input document.
counts.sentence
Number of sentences (number
, required).
counts.word
Number of words (number
, required).
counts.syllable
Number of syllables (number
, required).
Returns
Grade level associated with the document (number
).
👉 Note: values can theoretically start at
-3.40
and end atInfinity
.
Types
This package is fully typed with TypeScript.
It exports the additional type Counts
.
Compatibility
This package is at least compatible with all maintained versions of Node.js. As of now, that is Node.js 14.14+ and 16.0+. It also works in Deno and modern browsers.
Related
automated-readability
— uses character count instead of error-prone syllable parsercoleman-liau
— uses letter count instead of an error-prone syllable parserdale-chall-formula
— uses a dictionary; suited for higher reading levelsflesch
— uses syllable countgunning-fog
— uses syllable count, needs POS-tagging and NERsmog-formula
— likegunning-fog-index
, without needing advanced NLPspache-formula
— uses a dictionary, suited for lower reading levels
Contribute
Yes please! See How to Contribute to Open Source.
Security
This package is safe.