90 lines
2.6 KiB
JavaScript
90 lines
2.6 KiB
JavaScript
#!/usr/bin/env node
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/**
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* @fileoverview
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* Compiles our icons into static .js files that can be imported in the browser
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* and are tree-shakeable. The static .js files go in icons/{filename}.js. Also
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* generates an index.js that exports all icons by title, but is not
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* tree-shakeable
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*/
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const fs = require("fs");
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const path = require("path");
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const util = require("util");
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const minify = require("uglify-js").minify;
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const UTF8 = "utf8";
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const dataFile = path.resolve(__dirname, "..", "_data", "simple-icons.json");
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const indexFile = path.resolve(__dirname, "..", "index.js");
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const iconsDir = path.resolve(__dirname, "..", "icons");
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const indexTemplateFile = path.resolve(__dirname, "templates", "index.js");
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const iconObjectTemplateFile = path.resolve(__dirname, "templates", "icon-object.js");
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const indexTemplate = fs.readFileSync(indexTemplateFile, UTF8);
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const iconObjectTemplate = fs.readFileSync(iconObjectTemplateFile, UTF8);
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const data = require(dataFile);
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const { getIconSlug, titleToSlug } = require("./utils.js");
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// Local helper functions
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function escape(value) {
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return value.replace(/(?<!\\)'/g, "\\'");
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}
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function iconToKeyValue(icon) {
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let iconName = escape(icon.title);
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if (icon.slug !== titleToSlug(icon.title)) {
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iconName = icon.slug;
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}
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return `'${iconName}':${iconToObject(icon)}`;
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}
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function licenseToObject(license) {
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if (license === undefined) {
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return;
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}
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if (license.url === undefined) {
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license.url = `https://spdx.org/licenses/${license.type}.html`;
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}
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return license;
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}
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function iconToObject(icon) {
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return util.format(iconObjectTemplate,
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escape(icon.title),
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escape(icon.slug),
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escape(icon.svg),
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escape(icon.source),
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escape(icon.hex),
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icon.guidelines ? `'${escape(icon.guidelines)}'` : undefined,
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licenseToObject(icon.license),
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);
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}
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function minifyAndWrite(filepath, rawJavaScript) {
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const { error, code } = minify(rawJavaScript);
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if (error) {
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console.error(error);
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process.exit(1);
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} else {
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fs.writeFileSync(filepath, code);
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}
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}
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// 'main'
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const icons = [];
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data.icons.forEach(icon => {
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const filename = getIconSlug(icon);
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const svgFilepath = path.resolve(iconsDir, `${filename}.svg`);
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icon.svg = fs.readFileSync(svgFilepath, UTF8).replace(/\r?\n/, '');
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icon.slug = filename;
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icons.push(icon);
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// write the static .js file for the icon
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const jsFilepath = path.resolve(iconsDir, `${filename}.js`);
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minifyAndWrite(jsFilepath, `module.exports=${iconToObject(icon)};`);
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});
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// write our generic index.js
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const rawIndexJs = util.format(indexTemplate, icons.map(iconToKeyValue).join(','));
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minifyAndWrite(indexFile, rawIndexJs);
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