Wintr Api Abstraction

Unofficial Wintr scrapper service abstraction

Installation

npm i wintr

Usage

Wintr object should be instantiated with default options, including at least an Api key. See below for options description.

const w = new Wintr(options)

Two public methods are then available to interact with the Api :

• Fetch Api : w.fetch(options) : Promise<>
• Get account data : w.getAccountData(options): Promise<>

Options

Options are detailed here, and are available as constants in the module for easy rules writing

'Real-life' example

Extracting title and price from an Amazon product page :

const { Wintr, constants } = require('wintr')

const scraper = new Wintr({
 [constants.PARAMETERS.API_KEY]: 'myApiKey',
 [constants.PARAMETERS.JS_RENDERING]: true
})

scraper.fetch({
  [constants.PARAMETERS.URL]: 'https://amazon.com/dp/productId',
  [constants.PARAMETERS.OUTPUT_SCHEMA]: {
    product: {
      [constants.PARAMETERS.GROUP_CSS_SELECTOR]: 'body',
      [constants.PARAMETERS.GROUP_SCHEMA_DESCRIPTOR]: {
        productTitle: {
          [constants.OUTPUT_SCHEMA_DESCRIPTORS.CSS_SELECTOR]: '#productTitle',
          [constants.OUTPUT_SCHEMA_DESCRIPTORS.CSS_ATTRIBUTE]: '*text*',
          [constants.OUTPUT_SCHEMA_DESCRIPTORS.WINTR_MODIFIER]: [
            constants.OUTPUT_SCHEMA_MODIFIERS.TRIM_RESULT
          ]
        },
        price: {
          [constants.OUTPUT_SCHEMA_DESCRIPTORS.CSS_SELECTOR]: '#priceblock_ourprice',
          [constants.OUTPUT_SCHEMA_DESCRIPTORS.CSS_ATTRIBUTE]: '*text*',
          [constants.OUTPUT_SCHEMA_DESCRIPTORS.WINTR_MODIFIER]: [
            constants.OUTPUT_SCHEMA_MODIFIERS.TRIM_RESULT
          ],
          [constants.OUTPUT_SCHEMA_DESCRIPTORS.WINTR_REPLACER]: [
            {
              [constants.OUTPUT_SCHEMA_REPLACER.SEARCH]: '$',
              [constants.OUTPUT_SCHEMA_REPLACER.REPLACE_BY]: ''
            }
          ]
        }
      }
    }
  }
})
.then(({ content }) => { 
  console.log(content)
  // Logs something like that :
  // {
  //    productTitle: "Super cool product that everyone will like",
  //    price: "999.99"
  // }
})
.catch(console.error)

Development

Tests and examples are not included in the Npm release to keep it lightweight. Use the repository for development

Tests

Tests are handled by ava, and coverage by nyc.

Commands includes :

• npm run test : Run tests
• npm run coverage : Run tests through nyc, and output lcov file

Example

An example application is included. Run it with :

npm run dev

and open your browser at localhost:8080

Contributing

Issue reports, pull requests, suggestions and comments are very welcome, don't hesitate !

Please keep in mind that this repo use commitizen -style commit messages and follow js standard's style

License

ISC

Copyright (c) 2020, 121593