transform-es/lib/cli.js

#!/usr/bin/env node

const program = require("commander");
const fs = require("fs-extra");
const os = require("os");
const path = require("path");
const chalk = require("chalk");
const pkg = require("../package.json");
const transformEs = require("./index");
const log = require("./logger");

const success = chalk.keyword("green");

program
	.version(pkg.version)
	.option("-w, --watch", "是否监控文件改变", false)
	.option("-d, --outDir [outDir]", "输出到指定目录，默认为 lib", "lib")
	.option("-c, --clean", "转换前清空输出目录", false)
	.option(
		"-t, --target [target]",
		"转换目标格式：node|web|esm|cjs|commonjs|amd|umd|systemjs|auto 默认为 web",
		/^node|web|esm|cjs|commonjs|amd|umd|systemjs|auto$/,
		"web"
	)
	.option("--config [config]", "配置文件路径", "./transform-es.config.js")
	.option("--state [state]", "配置文件路径", "")
	.parse(process.argv);

const options = {
	configFile: program.config,
	mode: program.mode,
	state: program.state,
	watch: !!program.watch,
	clean: !!program.clean,
};

if (program.target === "node") {
	options.babel = {
		targets: {
			node: "current",
		},
	};
} else if (program.target === "esm") {
	options.babel = {
		modules: false,
	};
} else {
	options.babel = {
		modules: program.target === "web" ? "commonjs" : program.target,
	};
}

const exec = program.args[0];

if (exec === "init") {
	const pkgFile = process.cwd() + "/package.json";
	let userPkg = {};
	if (fs.existsSync(pkgFile)) {
		userPkg = require(pkgFile);
	}

	const scripts = userPkg.scripts || {};

	userPkg.scripts = scripts;

	if (!fs.existsSync(process.cwd() + "/transform-es.config.js")) {
		fs.writeFileSync(
			path.resolve(process.cwd(), "transform-es.config.js"),
			`
module.exports = function(options, state){
    return {
        babel: {
            // babel options
            loose: true,
            presets: [],
            plugins: []
        },
        postcss: {},
    };
}
`
		);

		log(success(`add transform-es.config.js successfully.`));
	}

	if (!scripts["dest"]) {
		scripts["dest"] = "transform-es ./src -t web -d lib -w -c";
		log(success(`add scripts.dest = ${scripts["dest"]} successfully.`));
	}

	if (!scripts["dest:esm"]) {
		scripts["dest:esm"] = "transform-es ./src -t esm -d esm -c";
		log(success(`add scripts["dest:esm"] = ${scripts["dest:esm"]} successfully.`));
	}

	if (!scripts["dest:cjs"]) {
		scripts["dest:cjs"] = "transform-es ./src -t web -d cjs -c";
		log(success(`add scripts["dest:cjs"] = ${scripts["dest:cjs"]} successfully.`));
	}

	if (!scripts["dest:node"]) {
		scripts["dest:node"] = "transform-es ./src -t node -d lib -c";
		log(success(`add scripts["dest:node"] = ${scripts["dest:node"]} successfully.`));
	}

	fs.writeFileSync(pkgFile, JSON.stringify(userPkg, null, 2) + os.EOL);

	process.exit(1);
}

let src = "src";

if (program.args.length) src = program.args[0];

transformEs(src, program.outDir, options);