Sellers.json

Sellers.JSON generator, parser and validator

About

Sellers.json is an online advertising specification for sharing supply-side information regarding who is selling a piece of inventory. The specification details a JSON file formatted in a strict manner that lists properties that may assist demand-side systems in validating inventory. The file lists an array of sellers, as well as identifiers, contact information and other miscellaneous properties.

This library provides a toolkit for working with sellers.json data, and it can:

• Generate new sellers.json files
• Read and modify extisting files
• Validate sellers.json data

The library is a lightweight NodeJS project designed to work on NodeJS version 8 and newer.

Installation

Install by running npm install sellers.json --save.

Usage

For validation, the assertValidSellersJSON and validateSellersJSON methods are provided to assert validity (and throw an error if invalid) and validate sellers.json data respectively:

const fs = require("fs");
const { assertValidSellersJSON, validateSellersJSON } = require("sellers.json");

// Get sellers.json data somehow
const sellersJSONData = JSON.parse(fs.readFileSync("./sellers.json", "utf8"));

// Throw an error if the data is invalid
assertValidSellersJSON(sellersJSONData);

// Check for validity issues:
const errors = validateSellersJSON(sellersJSONData);
// Each error will resemble:
// {
//     path: "some.deep.property",
//     message: "Property was invalid"
// }

The SellersFixture is a class designed to assist with constructing valid sellers.json data. You can create a new instance or load it from existing data:

const fs = require("fs");
const { SellersFixture } = require("sellers.json");

const sellersJSON = fs.readFileSync("./sellers.json", "utf8");

// Existing payload
const fixtureExisting = SellersFixture.fromString(sellersJSON); // Or: `SellersFixture.fromJSON(JSON.parse(sellersJSON)`

// New instance
const fixtureNew = new SellersFixture();

You can then use the fixture's helper methods to configure the file:

fixture.contactAddress = "123 Test Lane";
fixture.contactEmail = "user@example.com";
fixture.setIdentifier("TAG-ID ", "5678");
fixture.setIdentifier("DUNS", "1234");

const seller = fixture.configureSeller("seller-id-1234");
seller.directness = "BOTH";
seller.name = "Test Seller";
seller.isConfidential = false;
// Seller changes in `Seller` instance are applied automatically

See Also

• Ads.txt: ads.txt parser, generator and validator