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wide-truncate.js
'use strict' var stringWidth = require('string-width') var stripAnsi = require('strip-ansi') module.exports = wideTruncate function wideTruncate (str, target) { if (stringWidth(str) === 0) return str if (target <= 0) return '' if (stringWidth(str) <= target) return str // We compute the number of bytes of ansi sequences here and add // that to our initial truncation to ensure that we don't slice one // that we want to keep in half. var noAnsi = stripAnsi(str) var ansiSize = str.length + noAnsi.length var truncated = str.slice(0, target + ansiSize) // we have to shrink the result to account for our ansi sequence buffer // (if an ansi sequence was truncated) and double width characters. while (stringWidth(truncated) > target) { truncated = truncated.slice(0, -1) } return truncated }
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