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22 lines
505 B
JavaScript
22 lines
505 B
JavaScript
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'use strict';
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const detectNewline = string => {
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if (typeof string !== 'string') {
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throw new TypeError('Expected a string');
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}
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const newlines = string.match(/(?:\r?\n)/g) || [];
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if (newlines.length === 0) {
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return;
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}
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const crlf = newlines.filter(newline => newline === '\r\n').length;
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const lf = newlines.length - crlf;
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return crlf > lf ? '\r\n' : '\n';
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};
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module.exports = detectNewline;
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module.exports.graceful = string => (typeof string === 'string' && detectNewline(string)) || '\n';
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