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chrisbolin/script.js

Created May 24, 2016 17:28
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  1. chrisbolin created this gist May 24, 2016.
    18 changes: 18 additions & 0 deletions script.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,18 @@
    /*
    converts an array of objects into an array of row arrays,
    suitable for use in e.g. a csv coversion (npm install csv-stringify)
    includes the header row.
    e.g.
    objectArray = [{a: 1, b: 120}, {a: 2, c: 'horse'}]
    toRows(objectArray) -> [ ['a', 'b', 'c'], [1, 120, undefined], [2, undefined, 'horse'] ]
    */

    const toRows = objectArray => {
    const names = lodash
    .union.apply(lodash, objectArray.map(row => lodash.keys(row)))
    .sort();
    const rows = objectArray.map(obj => (
    names.map(name => obj[name])
    ));
    return [names, ...rows];
    }