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16 lines
747 B
JavaScript
16 lines
747 B
JavaScript
'use strict';
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/**
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* @param {string} msg The message to wrap
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* @param {object} [opts]
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* @param {number|string} [opts.margin] Left margin
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* @param {number} [opts.width] Maximum characters per line including the margin
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*/
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module.exports = (msg, opts = {}) => {
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const tab = Number.isSafeInteger(parseInt(opts.margin)) ? new Array(parseInt(opts.margin)).fill(' ').join('') : opts.margin || '';
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const width = opts.width || process.stdout.columns;
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return (msg || '').split(/\r?\n/g).map(line => line.split(/\s+/g).reduce((arr, w) => {
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if (w.length + tab.length >= width || arr[arr.length - 1].length + w.length + 1 < width) arr[arr.length - 1] += ` ${w}`;else arr.push(`${tab}${w}`);
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return arr;
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}, [tab]).join('\n')).join('\n');
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}; |