| 1 | "use strict";
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| 2 | function truncate(str, options = {}) {
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| 3 | if (typeof str !== 'string')
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| 4 | throw new TypeError('str must be a string!');
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| 5 | const length = options.length || 30;
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| 6 | const omission = options.omission || '...';
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| 7 | const { separator } = options;
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| 8 | const omissionLength = omission.length;
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| 9 | if (str.length < length)
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| 10 | return str;
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| 11 | if (separator) {
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| 12 | const words = str.split(separator);
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| 13 | let result = '';
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| 14 | let resultLength = 0;
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| 15 | for (const word of words) {
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| 16 | if (resultLength + word.length + omissionLength < length) {
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| 17 | result += word + separator;
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| 18 | resultLength = result.length;
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| 19 | }
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| 20 | else {
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| 21 | return result.substring(0, resultLength - 1) + omission;
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| 22 | }
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| 23 | }
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| 24 | }
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| 25 | else {
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| 26 | return str.substring(0, length - omissionLength) + omission;
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| 27 | }
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| 28 | }
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| 29 | module.exports = truncate;
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| 30 | |
| \ | No newline at end of file |