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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | 110x 110x 110x 110x 110x 367x 367x 1497x 1068x 429x 429x 1497x 367x 110x | import { columnMajor } from '../utils'; /** * Parses and converts data formatted in JSON to a manageable internal format. * * @param {Array.<Object>} arr - The input data formatted in JSON. * @return {Array.<Object>} Returns an array of headers and column major data. * @example * * // Sample input data: * const data = [ * { * "a": 1, * "b": 2, * "c": 3 * }, * { * "a": 4, * "b": 5, * "c": 6 * }, * { * "a": 7, * "b": 8, * "c": 9 * } * ]; */ function FlatJSON (arr) { const header = {}; let i = 0; let insertionIndex; const columns = []; const push = columnMajor(columns); arr.forEach((item) => { const fields = []; for (let key in item) { if (key in header) { insertionIndex = header[key]; } else { header[key] = i++; insertionIndex = i - 1; } fields[insertionIndex] = item[key]; } push(...fields); }); return [Object.keys(header), columns]; } export default FlatJSON; |