31 lines
658 B
JavaScript
31 lines
658 B
JavaScript
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import fs from 'node:fs';
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const I = x=>x;
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export function tsvFileToObjects(file, parsers) {
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let [cols, ...rows] = fs.readFileSync(file, 'utf8')
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.toString()
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.split('\n')
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.map(r => r
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.split('\t')
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// Allow for multiple \t between columns
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.map(t => t.trim())
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.filter(I)
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)
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// Remove empty rows
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.filter(r => r.length)
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;
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// Sanity check rows
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const invalidRows = rows.filter(r => r.length !== cols.length);
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if (invalidRows.length) {
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throw new Error(`Some rows have wrong number of columns:\n${invalidRows.join('\n')}`);
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}
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return rows.map(r => Object.fromEntries(
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cols.map(
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(c, i) => [c, (parsers[c] || I)(r[i])]
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)
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));
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}
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