neon/build.js at master · neon-gui/neon · GitHub

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//@corebuild staticEval

var fs = require("fs");
const fse = require('fs-extra');
var pth = require("path");
var marked = require("marked");
const { deleteSync } = require("node-fs-extra");
var corebuildTag = "<." + ">";
var OptiPng = require('optipng');
var UglifyJS = require("uglify-js");
var typescript = require("typescript");
var coffeescript = require("coffeescript");
var chalk = import("chalk");
var logs = [];
var ansi = import("strip-ansi");
var httpServer = require("http-server");
var ngrok = require('ngrok');
var url = "";
var lastRebuildTime = 0;

console.oldLog = console.log;
console.log = (s) => {
    console.oldLog(s);
    logs.push(ansi(s));
}

var GITHUB_PAGES_PATH = "localhost:3000/";

// copy all files into build folder

async function build(path, dest) {
    if (chalk instanceof Promise) {
        chalk = (await chalk).default;
    }

    if (process.env.GITHUB_PAGES == true || process.env.GITHUB_PAGES == "true") {
        var username = process.env.GITHUB_REPOSITORY_OWNER;
        var repoName = process.env.GITHUB_REPOSITORY.split("/")[1];
        var TARGET_GITHUB_PAGES_PATH = `https://${username}.github.io/${repoName}/`;
        if (GITHUB_PAGES_PATH != TARGET_GITHUB_PAGES_PATH) {
            GITHUB_PAGES_PATH = TARGET_GITHUB_PAGES_PATH;
            console.log("We're running on GitHub Pages!");
            console.log("Let's be nice and autodetect the GITHUB_PAGES_PATH property.");
            console.log("> " + GITHUB_PAGES_PATH);
        }
    }

    console.log(chalk.black.bgBlue(lengthen(" BUILD ")) + " building " + path);

    // detect if path is a directory

    if (fs.statSync(path).isDirectory()) {
        fs.mkdirSync(dest);
        var children = fs.readdirSync(path);
        for (var i in children) {
            var child = children[i];
            var bannedDirectories = ["build", "node_modules"];
            if (bannedDirectories.includes(child) || child.startsWith('.')) {
                continue;
            }
            await build(pth.join(path, child), pth.join(dest, child));
        }
    } else {
        var output = "";
        var fileContent = fs.readFileSync(path, "utf-8");

        var configFlag = "@corebuild";
        var staticEval = configFlag + " staticEval";
        var markdown = configFlag + " markdown";

        var useStaticEval = fileContent.includes(staticEval);
        var useMarkdown = fileContent.includes(markdown);

        if (path.endsWith(".ts")) {
            console.log(chalk.black.bgYellow(lengthen(" TRANSPILE ")) + " Transpiling " + path + " from TypeScript")
            fileContent = typescript.transpile(fileContent, {
                target: "es6"
            });

            dest = dest.split(".ts").join(".js");
        }

        if (path.endsWith(".coffee")) {
            console.log(chalk.black.bgYellow(lengthen(" TRANSPILE ")) + " Transpiling " + path + " from Coffeescript")

            fileContent = coffeescript.compile(fileContent, {
            });

            dest = dest.split(".coffee").join(".js");
        }

        if (useStaticEval) {
            fileContent = fileContent.split(staticEval).join("");
            var sections = fileContent.split(corebuildTag);

            for (var i in sections) {
                if (i % 2 == 0) {
                    output += sections[i];
                } else {
                    var content = eval(sections[i]);
                    console.log(chalk.black.bgMagenta(lengthen(" JS ")) + " compiling corebuild section " + sections[i] + " :: " + content);
                    output += content; /* corebuild will turn this <.> 1 + 1 <.> into 2*/
                }
            }

            fileContent = output;
        }

        if (useMarkdown) {
            fileContent = fileContent.split(markdown).join("");
            fileContent = `<!DOCTYPE html><link rel="stylesheet" href="style.css">` + await marked.parse(fileContent);
            dest = dest.split("md").join("html");
        }

        if (path.includes("js") && !path.includes("json")) {
            var uglifyOutput = UglifyJS.minify(fileContent);
            if (!!uglifyOutput.error) {
                console.log("⚠ WARNING!!! UGLIFY COULD NOT MINIFY " + path);
                console.log("⚠ ERROR: " + uglifyOutput.error);
            }
            if (uglifyOutput.code) {
                uglifyOutput.code = "/*\n\tHello!\n\tThis code has been minified by uglify.js!\n\tThe original source code is available at https://github.com/codelikecraze/neon\n\tHappy Hacking!\n*/\n\n\n" + uglifyOutput.code;
            }
            fileContent = uglifyOutput.code || fileContent;
        }

        if (path.includes("png")) {
            console.log(chalk.black.bgGreen(lengthen(" OPTIPNG ")) + " optimizing " + path);
            var srcStream = fs.createReadStream(path);
            var destStream = fs.createWriteStream(dest);
            var imageOptimizer = new OptiPng(['-o7']);
            srcStream.pipe(imageOptimizer).pipe(destStream);
            await new Promise((resolve) => { imageOptimizer.on('end', resolve) });
            var optimized = fs.readFileSync(dest);
            console.log(chalk.black.bgGreen(lengthen(" OPTIPNG ")) + ` Optimized ${path} and compressed to ${Math.round(optimized.length / fileContent.length * 100)}% of the size.`);
        } else {
            await fs.promises.writeFile(dest, fileContent);
        }
    }
}

function lengthen(str) {
    var output = str;
    while (output.length < " TRANSPILE ".length) {
        output += " ";
    }
    return output;
}

(async () => {
    ansi = (await ansi).default;
    if (fs.existsSync(pth.join(__dirname, "build"))) {
        fs.rmSync(pth.join(__dirname, "build"), {
            recursive: true,
            force: true
        });
    }
    await build(__dirname, pth.join(__dirname, "build"));
    await fs.promises.writeFile(pth.join(__dirname, "build", "logs.txt"), logs.join("\n"));

    if (process.argv.includes("--server")) {
        var server = httpServer.createServer({
            root: "build",
        });
        server.listen(3000);
        fs.watch(__dirname, {
            recursive: true,
        }, async (type, filename) => {
            if (lastRebuildTime > new Date().getTime() - 3000) {
                return;
            }
            if (filename.includes("build")) {
                return;
            }
            lastRebuildTime = new Date().getTime();
            console.log(chalk.black.bgCyan(lengthen(" REBUILD ")) + " " + filename + " " + type);
            if (fs.existsSync(pth.join(__dirname, "build"))) {
                fs.rmSync(pth.join(__dirname, "build"), {
                    recursive: true,
                    force: true
                });
            }
            await build(__dirname, pth.join(__dirname, "build"));
            console.log(chalk.black.bgCyan(lengthen(" REBUILD ")) + " Complete");
        });
    }
    if (process.argv.includes("--ngrok")) {
        GITHUB_PAGES_PATH = await ngrok.connect(3000) + "/";
        console.log(GITHUB_PAGES_PATH);
    }
})();