generate-icon-bundle.js

"use strict";

const output = 'src/generated/icon-bundle.js';
import * as fs from 'fs';
import { Collection } from '@iconify/json-tools';

let icons = [
    // Few Material Design icons
    'mdi-cart-outline', 'mdi-information-outline', 'mdi-link'
];

let pretty = false;

// Sort icons by collections: filtered[prefix][array of icons]
let filtered = {};
icons.forEach(icon => {
    let parts = icon.split(':'),
        prefix;

    if (parts.length > 1) {
        prefix = parts.shift();
        icon = parts.join(':');
    } else {
        parts = icon.split('-');
        prefix = parts.shift();
        icon = parts.join('-');
    }
    if (filtered[prefix] === void 0) {
        filtered[prefix] = [];
    }
    if (filtered[prefix].indexOf(icon) === -1) {
        filtered[prefix].push(icon);
    }
});

// Parse each collection
let code = '';
Object.keys(filtered).forEach(prefix => {
    let collection = new Collection();
    if (!collection.loadIconifyCollection(prefix)) {
        console.error('Error loading collection', prefix);
        return;
    }

    code += collection.scriptify({
        icons: filtered[prefix],
        optimize: true,
        pretty: pretty
    });
});

// Save code
try {
    fs.writeFileSync(output, code, 'utf8');
    console.log('Saved bundle to', output, ' (' + code.length + ' bytes)');
} catch (err) {
    console.error(err);
    process.exit(1);
}