js-algorithms/node_modules/babel/bin/_babel-node

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2015-07-24 06:44:18 +00:00
#!/usr/bin/env node
var pathIsAbsolute = require("path-is-absolute");
var commander = require("commander");
var Module = require("module");
var babel = require("babel-core");
var inspect = require("util").inspect;
var path = require("path");
var repl = require("repl");
var util = require("babel-core").util;
var vm = require("vm");
var _ = require("lodash");
var program = new commander.Command("babel-node");
program.option("-e, --eval [script]", "Evaluate script");
program.option("-p, --print [code]", "Evaluate script and print result");
program.option("-i, --ignore [regex]", "Ignore all files that match this regex when using the require hook");
program.option("-x, --extensions [extensions]", "List of extensions to hook into [.es6,.js,.es,.jsx]");
program.option("-r, --stage [stage]", "Enable support for specific ECMAScript stages");
program.option("-w, --whitelist [whitelist]", "Whitelist of transformers to ONLY use", util.list);
program.option("-b, --blacklist [blacklist]", "Blacklist of transformers to NOT use", util.list);
program.option("-o, --optional [optional]", "List of optional transformers to enable", util.list);
var pkg = require("../package.json");
program.version(pkg.version);
program.usage("[options] [ -e script | script.js ] [arguments]");
program.parse(process.argv);
//
babel.register({
extensions: program.extensions,
blacklist: program.blacklist,
whitelist: program.whitelist,
optional: program.optional,
ignore: program.ignore,
stage: program.stage,
});
//
var _eval = function (code, filename) {
if (!code) return undefined;
code = babel.transform(code, {
filename: filename,
blacklist: program.blacklist,
whitelist: program.whitelist,
optional: program.optional,
stage: program.stage
}).code;
return vm.runInThisContext(code, {
filename: filename
});
};
if (program.eval || program.print) {
var code = program.eval;
if (!code || code === true) code = program.print;
global.__filename = "[eval]";
global.__dirname = process.cwd();
var module = new Module(global.__filename);
module.filename = global.__filename;
module.paths = Module._nodeModulePaths(global.__dirname);
global.exports = module.exports;
global.module = module;
global.require = module.require.bind(module);
var result = _eval(code, global.__filename);
if (program.print) {
var output = _.isString(result) ? result : inspect(result);
process.stdout.write(output + "\n");
}
} else {
if (program.args.length) {
// slice all arguments up to the first filename since they're babel args that we handle
var args = process.argv.slice(2);
var i = 0;
var ignoreNext = false;
_.each(args, function (arg, i2) {
if (ignoreNext) {
ignoreNext = false;
return;
}
if (arg[0] === "-") {
var parsedArg = program[arg.slice(2)];
if (parsedArg && parsedArg !== true) {
ignoreNext = true;
}
} else {
i = i2;
return false;
}
});
args = args.slice(i);
// make the filename absolute
var filename = args[0];
if (!pathIsAbsolute(filename)) args[0] = path.join(process.cwd(), filename);
// add back on node and concat the sliced args
process.argv = ["node"].concat(args);
Module.runMain();
} else {
replStart();
}
}
function replStart() {
repl.start({
prompt: "> ",
input: process.stdin,
output: process.stdout,
eval: replEval,
useGlobal: true
});
}
function replEval(code, context, filename, callback) {
var err;
var result;
try {
if (code[0] === "(" && code[code.length - 1] === ")") {
code = code.slice(1, -1); // remove "(" and ")"
}
result = _eval(code, filename);
} catch (e) {
err = e;
}
callback(err, result);
}