digipinjs
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A comprehensive TypeScript library for encoding and decoding Indian geographic coordinates into DIGIPIN format (Indian Postal Digital PIN system). Features CLI tools, caching, batch processing, and Express middleware for seamless integration.
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JavaScript
import { expect } from 'chai';
import { toGeoJson } from '../geojson';
describe('GeoJSON Utilities', () => {
it('converts DIGIPIN to GeoJSON Point Feature', () => {
const pin = '39J-438-TJC7'; // Delhi
const feature = toGeoJson(pin);
expect(feature.type).to.equal('Feature');
expect(feature.geometry.type).to.equal('Point');
expect(feature.geometry.coordinates).to.have.length(2);
expect(feature.geometry.coordinates[0]).to.be.closeTo(77.2090, 0.0001); // Lng
expect(feature.geometry.coordinates[1]).to.be.closeTo(28.6139, 0.0001); // Lat
expect(feature.properties.pin).to.equal('39J438TJC7');
});
it('includes custom properties', () => {
const feature = toGeoJson('39J-438-TJC7', { name: 'Delhi' });
expect(feature.properties.name).to.equal('Delhi');
});
});