27 lines
844 B
TypeScript
27 lines
844 B
TypeScript
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import {dotNotation, flattenObj} from './objects.ts';
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/**
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* Convert an object to a CSV string
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*
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* @param {any[]} target Array of objects to create CSV from
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* @param {boolean} flatten Should nested object be flattened or treated as values
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* @return {string} CSV string
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*/
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export function csv(target: any[], flatten=true) {
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const headers = target.reduce((acc, row) => {
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Object.keys(flatten ? flattenObj(row) : row)
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.forEach(key => { if(!acc.includes(key)) acc.push(key); });
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return acc;
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}, []);
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return [
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headers.join(','),
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...target.map(row => headers.map((h: string) => {
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const value = dotNotation<any>(row, h);
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const type = typeof value;
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if(type == 'string' && value.includes(',')) return `"${value}"`;
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if(type == 'object') return `"${JSON.stringify(value)}"`;
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return value;
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}).join(','))
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].join('\n');
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}
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