_babel-node.js
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"use strict";
var _commander = _interopRequireDefault(require("commander"));
var _module = _interopRequireDefault(require("module"));
var _util = require("util");
var _path = _interopRequireDefault(require("path"));
var _repl = _interopRequireDefault(require("repl"));
var babel = _interopRequireWildcard(require("@babel/core"));
var _vm = _interopRequireDefault(require("vm"));
require("core-js/stable");
require("regenerator-runtime/runtime");
var _register = _interopRequireDefault(require("@babel/register"));
var _resolve = _interopRequireDefault(require("resolve"));
var _package = _interopRequireDefault(require("../package.json"));
function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const program = new _commander.default.Command("babel-node");
function collect(value, previousValue) {
if (typeof value !== "string") return previousValue;
const values = value.split(",");
return previousValue ? previousValue.concat(values) : values;
}
program.option("-e, --eval [script]", "Evaluate script");
program.option("--no-babelrc", "Specify whether or not to use .babelrc and .babelignore files");
program.option("-r, --require [module]", "Require module");
program.option("-p, --print [code]", "Evaluate script and print result");
program.option("-o, --only [globs]", "A comma-separated list of glob patterns to compile", collect);
program.option("-i, --ignore [globs]", "A comma-separated list of glob patterns to skip compiling", collect);
program.option("-x, --extensions [extensions]", "List of extensions to hook into [.es6,.js,.es,.jsx,.mjs]", collect);
program.option("--config-file [path]", "Path to the babel config file to use. Defaults to working directory babel.config.js");
program.option("--env-name [name]", "The name of the 'env' to use when loading configs and plugins. " + "Defaults to the value of BABEL_ENV, or else NODE_ENV, or else 'development'.");
program.option("--root-mode [mode]", "The project-root resolution mode. " + "One of 'root' (the default), 'upward', or 'upward-optional'.");
program.option("-w, --plugins [string]", "", collect);
program.option("-b, --presets [string]", "", collect);
program.version(_package.default.version);
program.usage("[options] [ -e script | script.js ] [arguments]");
program.parse(process.argv);
const babelOptions = {
caller: {
name: "@babel/node"
},
extensions: program.extensions,
ignore: program.ignore,
only: program.only,
plugins: program.plugins,
presets: program.presets,
configFile: program.configFile,
envName: program.envName,
rootMode: program.rootMode,
babelrc: program.babelrc === true ? undefined : program.babelrc
};
for (const key of Object.keys(babelOptions)) {
if (babelOptions[key] === undefined) {
delete babelOptions[key];
}
}
(0, _register.default)(babelOptions);
const replPlugin = ({
types: t
}) => ({
visitor: {
ModuleDeclaration(path) {
throw path.buildCodeFrameError("Modules aren't supported in the REPL");
},
VariableDeclaration(path) {
if (path.node.kind !== "var") {
throw path.buildCodeFrameError("Only `var` variables are supported in the REPL");
}
},
Program(path) {
if (path.get("body").some(child => child.isExpressionStatement())) return;
path.pushContainer("body", t.expressionStatement(t.identifier("undefined")));
}
}
});
const _eval = function (code, filename) {
code = code.trim();
if (!code) return undefined;
code = babel.transform(code, {
filename: filename,
presets: program.presets,
plugins: (program.plugins || []).concat([replPlugin])
}).code;
return _vm.default.runInThisContext(code, {
filename: filename
});
};
if (program.eval || program.print) {
let code = program.eval;
if (!code || code === true) code = program.print;
global.__filename = "[eval]";
global.__dirname = process.cwd();
const module = new _module.default(global.__filename);
module.filename = global.__filename;
module.paths = _module.default._nodeModulePaths(global.__dirname);
global.exports = module.exports;
global.module = module;
global.require = module.require.bind(module);
const result = _eval(code, global.__filename);
if (program.print) {
const output = typeof result === "string" ? result : (0, _util.inspect)(result);
process.stdout.write(output + "\n");
}
} else {
if (program.args.length) {
let args = process.argv.slice(2);
let i = 0;
let ignoreNext = false;
args.some(function (arg, i2) {
if (ignoreNext) {
ignoreNext = false;
return;
}
if (arg[0] === "-") {
const parsedOption = program.options.find(option => {
return option.long === arg || option.short === arg;
});
if (parsedOption === undefined) {
return;
}
const optionName = parsedOption.attributeName();
const parsedArg = program[optionName];
if (optionName === "require" || parsedArg && parsedArg !== true) {
ignoreNext = true;
}
} else {
i = i2;
return true;
}
});
args = args.slice(i);
if (program.require) {
require(_resolve.default.sync(program.require, {
basedir: process.cwd()
}));
}
const filename = args[0];
if (!_path.default.isAbsolute(filename)) {
args[0] = _path.default.join(process.cwd(), filename);
}
process.argv = ["node"].concat(args);
process.execArgv.unshift(__filename);
_module.default.runMain();
} else {
replStart();
}
}
function replStart() {
_repl.default.start({
prompt: "babel > ",
input: process.stdin,
output: process.stdout,
eval: replEval,
useGlobal: true
});
}
function replEval(code, context, filename, callback) {
let err;
let result;
try {
if (code[0] === "(" && code[code.length - 1] === ")") {
code = code.slice(1, -1);
}
result = _eval(code, filename);
} catch (e) {
err = e;
}
callback(err, result);
}