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							- 'use strict';
 
- const isFullwidthCodePoint = require('is-fullwidth-code-point');
 
- const astralRegex = require('astral-regex');
 
- const ansiStyles = require('ansi-styles');
 
- const ESCAPES = [
 
- 	'\u001B',
 
- 	'\u009B'
 
- ];
 
- const END_CODE = 39;
 
- const wrapAnsi = code => `${ESCAPES[0]}[${code}m`;
 
- module.exports = (str, begin, end) => {
 
- 	const arr = [...str.normalize()];
 
- 	end = typeof end === 'number' ? end : arr.length;
 
- 	let insideEscape = false;
 
- 	let escapeCode = null;
 
- 	let visible = 0;
 
- 	let output = '';
 
- 	for (const [i, x] of arr.entries()) {
 
- 		let leftEscape = false;
 
- 		if (ESCAPES.includes(x)) {
 
- 			insideEscape = true;
 
- 			const code = /\d[^m]*/.exec(str.slice(i, i + 18));
 
- 			escapeCode = code === END_CODE ? null : code;
 
- 		} else if (insideEscape && x === 'm') {
 
- 			insideEscape = false;
 
- 			leftEscape = true;
 
- 		}
 
- 		if (!insideEscape && !leftEscape) {
 
- 			++visible;
 
- 		}
 
- 		if (!astralRegex({exact: true}).test(x) && isFullwidthCodePoint(x.codePointAt())) {
 
- 			++visible;
 
- 		}
 
- 		if (visible > begin && visible <= end) {
 
- 			output += x;
 
- 		} else if (visible === begin && !insideEscape && escapeCode !== null && escapeCode !== END_CODE) {
 
- 			output += wrapAnsi(escapeCode);
 
- 		} else if (visible >= end) {
 
- 			if (escapeCode !== null) {
 
- 				output += wrapAnsi(ansiStyles.codes.get(parseInt(escapeCode, 10)) || END_CODE);
 
- 			}
 
- 			break;
 
- 		}
 
- 	}
 
- 	return output;
 
- };
 
 
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