Created
January 23, 2018 13:01
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Parse CSV, filter and then output to another file (e.g, Email)
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| const parse = require('csv-parse') | |
| const fs = require('fs') | |
| const transform = require('stream-transform') | |
| const isEmail = require('is-email') | |
| const input = fs.createReadStream('./input.csv') | |
| const output = fs.createWriteStream('./output.csv') | |
| const parser = parse({ delimiter: ',' }) | |
| const transformer = transform((record, callback) => { | |
| if (Array.isArray(record) && isEmail(record[4])) { | |
| callback(null, `${record[4]}\n`) | |
| } else { | |
| callback(null) | |
| } | |
| }, { parallel: 5 }) | |
| input.pipe(parser).pipe(transformer).pipe(output) |
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