mirror of
https://github.com/lovell/sharp.git
synced 2025-07-09 18:40:16 +02:00
25 lines
566 B
JavaScript
25 lines
566 B
JavaScript
'use strict';
|
|
|
|
const stopWords = require('./stop-words');
|
|
|
|
const extractDescription = (str) =>
|
|
str
|
|
.replace(/\(http[^)]+/g, '')
|
|
.replace(/\s+/g, ' ')
|
|
.replace(/[^A-Za-z0-9_/\-,. ]/g, '')
|
|
.replace(/\s+/g, ' ')
|
|
.substr(0, 140)
|
|
.trim();
|
|
|
|
const extractKeywords = (str) =>
|
|
[
|
|
...new Set(
|
|
str
|
|
.split(/[ -/]/)
|
|
.map((word) => word.toLowerCase().replace(/[^a-z]/g, ''))
|
|
.filter((word) => word.length > 2 && !stopWords.includes(word))
|
|
)
|
|
].join(' ');
|
|
|
|
module.exports = { extractDescription, extractKeywords };
|