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79246be8c7
* Added declaration for csvtojson * Updated indent formatting to meet DT standards * Fixed tslint issues * Fixed issue with Converter class incorrectly extending Transform
115 lines
2.9 KiB
TypeScript
115 lines
2.9 KiB
TypeScript
import csv = require('csvtojson');
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import fs = require('fs');
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// From documentation on project home page -> https://github.com/Keyang/node-csvtojson
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/////////////////////////////
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// From CSV String
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const csvStr: string = `1,2,3
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4,5,6
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7,8,9`;
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// event emitter version using factory function
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csv({ noheader: true })
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.fromString(csvStr)
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.on('csv', (csvRow: string[]) => { // this func will be called 3 times
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console.log(csvRow); // => [1,2,3] , [4,5,6] , [7,8,9]
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})
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.on('done', () => {
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//parsing finished
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});
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// event emitter version using Converter class
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new csv.Converter({ noheader: true })
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.fromString(csvStr)
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.on('csv', (csvRow: string[]) => { // this func will be called 3 times
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console.log(csvRow); // => [1,2,3] , [4,5,6] , [7,8,9]
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})
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.on('done', () => {
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//parsing finished
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});
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// callback version using Converter class
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new csv.Converter({ noheader: true })
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.fromString(csvStr, (err, result) => {
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console.log(JSON.stringify(result));
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});
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// callback version using factory function
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csv({ noheader: true })
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.fromString(csvStr, (err, result) => {
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console.log(JSON.stringify(result));
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});
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/////////////////////////////
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// From CSV File
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const filePath = './test.csv';
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// event emitter version using factory function
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csv()
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.fromFile(filePath)
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.on('json', (jsonObj: any) => {
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console.log(JSON.stringify(jsonObj));
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})
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.on('done', (error: any) => {
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console.log('end');
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});
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// event emitter version using Converter class
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new csv.Converter()
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.fromFile(filePath)
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.on('json', (jsonObj: any) => {
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console.log(JSON.stringify(jsonObj));
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})
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.on('done', (error: any) => {
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console.log('end');
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});
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// callback version using factory function
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csv()
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.fromFile(filePath, (err, result) => {
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console.log(JSON.stringify(result));
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});
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// callback version using Converter class
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new csv.Converter()
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.fromFile(filePath, (err, result) => {
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console.log(JSON.stringify(result));
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});
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/////////////////////////////
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// From CSV Stream
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const stream = fs.createReadStream(filePath);
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// event emitter version using factory function
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csv().fromStream(stream)
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.on('json', (jsonObj: any) => {
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console.log(JSON.stringify(jsonObj));
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})
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.on('done', (error: any) => {
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console.log('end');
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});
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// event emitter version using Converter class
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new csv.Converter()
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.fromStream(stream)
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.on('json', (jsonObj: any) => {
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console.log(JSON.stringify(jsonObj));
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})
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.on('done', (error: any) => {
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console.log('end');
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});
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// callback version using factory function
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csv()
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.fromStream(stream, (err, result) => {
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console.log(JSON.stringify(result));
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});
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// callback version using Converter class
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new csv.Converter()
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.fromStream(stream, (err, result) => {
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console.log(JSON.stringify(result));
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});
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