110 lines
2.8 KiB
JavaScript
110 lines
2.8 KiB
JavaScript
#!/usr/bin/env node
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var roadrunner = require("roadrunner");
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var commander = require("commander");
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var Module = require("module");
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var path = require("path");
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var repl = require("repl");
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var to5 = require("../lib/6to5");
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var util = require("../lib/6to5/util");
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var vm = require("vm");
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var _ = require("lodash");
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var program = new commander.Command("6to5-node");
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program.option("-e, --eval [script]", "Evaluate script");
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program.option("-p, --print", "Evaluate script and print result");
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program.option("-i, --ignore [regex]", "Ignore all files that match this regex when using the require hook");
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program.option("-x, --extensions [extensions]", "List of extensions to hook into [.es6,.js]");
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program.option("-r, --experimental", "Enable experimental support for proposed ES7 features");
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program.option("-g, --playground", "Enable playground support");
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program.option("-c, --cache", "Cache compiled files and require paths");
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var pkg = require("../package.json");
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program.version(pkg.version);
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program.usage("[options] [ -e script | script.js ] [arguments]");
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program.parse(process.argv);
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if (program.cache) roadrunner.load();
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//
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to5.register({
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experimental: program.experimental,
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extensions: program.extensions,
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playground: program.playground,
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ignore: program.ignore,
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cache: program.cache && roadrunner.get("6to5")
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});
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//
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var _eval = function (code, filename) {
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code = to5.transform(code, {
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filename: filename,
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blacklist: ["useStrict"],
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experimental: program.experimental,
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playground: program.playground
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}).code;
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return vm.runInThisContext(code, filename);
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};
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if (program.eval) {
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var result = _eval(program.eval, "eval");
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if (program.print) console.log(result);
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} else {
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if (program.args.length) {
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// slice all arguments up to the first filename since they're 6to5 args that we handle
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var args = process.argv.slice(2);
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var i = 0;
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_.each(args, function (arg, i2) {
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if (arg[0] !== "-") {
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i = i2;
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return false;
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}
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});
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args = args.slice(i);
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// make the filename absolute
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var filename = args[0]
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if (!util.isAbsolute(filename)) args[0] = path.join(process.cwd(), filename);
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// add back on node and concat the sliced args
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process.argv = ["node"].concat(args);
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Module.runMain();
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} else {
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replStart();
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}
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}
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if (program.cache) roadrunner.save();
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function replStart() {
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repl.start({
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prompt: "> ",
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input: process.stdin,
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output: process.stdout,
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eval: replEval,
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useGlobal: true
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});
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}
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function replEval(code, context, filename, callback) {
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var err;
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var result;
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try {
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if (code[0] === "(" && code[code.length - 1] === ")") {
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code = code.slice(1, -1); // remove "(" and ")"
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}
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result = _eval(code, filename);
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} catch (e) {
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err = e;
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}
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callback(err, result);
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}
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