simple-icons/scripts/prepublish.js
Eric Cornelissen 7672bfb2db Reduce package size by replacing JSON.stringify (#1519)
* Reduce package size by replacing JSON.stringify by custom stringify func

* Escape icon's title and SVG value

... as pointed out by @birjolaxew, if they contain a "'" it will break 
the resulting object.
2019-07-14 21:15:26 +02:00

56 lines
1.7 KiB
JavaScript
Executable File

#!/usr/bin/env node
/**
* @fileoverview
* Compiles our icons into static .js files that can be imported in the browser
* and are tree-shakeable.
* The static .js files go in icons/{filename}.js.
* Also generates an index.js that exports all icons by title, but is not tree-shakeable
*/
const fs = require("fs");
const util = require("util");
const minify = require("uglify-js").minify;
const dataFile = "../_data/simple-icons.json";
const indexFile = `${__dirname}/../index.js`;
const iconsDir = `${__dirname}/../icons`;
const indexTemplateFile = `${__dirname}/templates/index.js`;
const data = require(dataFile);
const { titleToFilename } = require("./utils");
// Local helper functions
function escape(value) {
return value.replace(/'/g, "\\'");
}
function iconToKeyValue(icon) {
return `'${icon.title}':${iconToObject(icon)}`;
}
function iconToObject(icon) {
return `{title:'${escape(icon.title)}',slug:'${escape(icon.slug)}',svg:'${escape(icon.svg)}',get path(){return this.svg.match(/<path\\s+d="([^"]*)/)[1];},source:'${escape(icon.source)}',hex:'${icon.hex}'}`;
}
// 'main'
const icons = [];
data.icons.forEach(icon => {
const filename = titleToFilename(icon.title);
icon.svg = fs.readFileSync(`${iconsDir}/${filename}.svg`, "utf8");
icon.slug = filename;
icons.push(icon)
// write the static .js file for the icon
fs.writeFileSync(
`${iconsDir}/${filename}.js`,
`module.exports=${iconToObject(icon)};`
);
});
// write our generic index.js
const indexTemplate = fs.readFileSync(indexTemplateFile, "utf8");
const { error, code } = minify(util.format(indexTemplate, icons.map(iconToKeyValue).join(',')));
if (error) {
process.exit(1);
} else {
fs.writeFileSync(indexFile, code);
}