102 lines
2.6 KiB
JavaScript
Executable File
102 lines
2.6 KiB
JavaScript
Executable File
/**
|
|
* This tiny wrapper file checks for known node flags and appends them
|
|
* when found, before invoking the "real" _babel-node(1) executable.
|
|
*/
|
|
|
|
import getV8Flags from "v8flags";
|
|
import path from "path";
|
|
|
|
// TODO: When support for node < 10.10 will be dropped, this package
|
|
// can be replaced with process.allowedNodeEnvironmentFlags
|
|
import allowedNodeEnvironmentFlags from "node-environment-flags";
|
|
|
|
let args = [path.join(__dirname, "_babel-node")];
|
|
|
|
let babelArgs = process.argv.slice(2);
|
|
let userArgs;
|
|
|
|
// separate node arguments from script arguments
|
|
const argSeparator = babelArgs.indexOf("--");
|
|
if (argSeparator > -1) {
|
|
userArgs = babelArgs.slice(argSeparator); // including the --
|
|
babelArgs = babelArgs.slice(0, argSeparator);
|
|
}
|
|
|
|
/**
|
|
* Replace dashes with underscores in the v8Flag name
|
|
* Also ensure that if the arg contains a value (e.g. --arg=true)
|
|
* that only the flag is returned.
|
|
*/
|
|
function getNormalizedV8Flag(arg) {
|
|
// v8 uses the "no" prefix to negate boolean flags (e.g. --nolazy),
|
|
// but they are not listed by v8flags
|
|
const matches = arg.match(/--(?:no)?(.+)/);
|
|
|
|
if (matches) {
|
|
return `--${matches[1].replace(/-/g, "_")}`;
|
|
}
|
|
|
|
return arg;
|
|
}
|
|
|
|
// These are aliases for node options defined by babel-node.
|
|
const aliases = new Map([
|
|
["-d", "--debug"],
|
|
["-gc", "--expose-gc"],
|
|
]);
|
|
|
|
getV8Flags(function(err, v8Flags) {
|
|
for (let i = 0; i < babelArgs.length; i++) {
|
|
const arg = babelArgs[i];
|
|
const flag = arg.split("=")[0];
|
|
|
|
if (flag === "-r" || flag === "--require") {
|
|
args.push(flag);
|
|
args.push(babelArgs[++i]);
|
|
} else if (aliases.has(flag)) {
|
|
args.unshift(aliases.get(flag));
|
|
} else if (
|
|
flag === "debug" || // node debug foo.js
|
|
flag === "inspect" ||
|
|
v8Flags.indexOf(getNormalizedV8Flag(flag)) >= 0 ||
|
|
allowedNodeEnvironmentFlags.has(flag)
|
|
) {
|
|
args.unshift(arg);
|
|
} else {
|
|
args.push(arg);
|
|
}
|
|
}
|
|
|
|
// append arguments passed after --
|
|
if (argSeparator > -1) {
|
|
args = args.concat(userArgs);
|
|
}
|
|
|
|
try {
|
|
const kexec = require("kexec");
|
|
kexec(process.argv[0], args);
|
|
} catch (err) {
|
|
if (
|
|
err.code !== "MODULE_NOT_FOUND" &&
|
|
err.code !== "UNDECLARED_DEPENDENCY"
|
|
) {
|
|
throw err;
|
|
}
|
|
|
|
const child_process = require("child_process");
|
|
const proc = child_process.spawn(process.argv[0], args, {
|
|
stdio: "inherit",
|
|
});
|
|
proc.on("exit", function(code, signal) {
|
|
process.on("exit", function() {
|
|
if (signal) {
|
|
process.kill(process.pid, signal);
|
|
} else {
|
|
process.exitCode = code;
|
|
}
|
|
});
|
|
});
|
|
process.on("SIGINT", () => proc.kill("SIGINT"));
|
|
}
|
|
});
|