TypeScript/src/watchGuard/watchGuard.ts
Jake Bailey 01e5200096 Convert require calls to imports
Although the existing require calls would work fine, it's more
consistent to make them actual imports and let them be converted at
compile/bundle time. It also lets us emit ESM if needed.

There are still conditional requires present for things like the node
System, but that's a more difficult problem to solve.
2022-11-07 13:34:44 -08:00

18 lines
754 B
TypeScript

import * as fs from "fs";
if (process.argv.length < 3) {
process.exit(1);
}
const directoryName = process.argv[2];
// main reason why we need separate process to check if it is safe to watch some path
// is to guard against crashes that cannot be intercepted with protected blocks and
// code in tsserver already can handle normal cases, like non-existing folders.
// This means that here we treat any result (success or exception) from fs.watch as success since it does not tear down the process.
// The only case that should be considered as failure - when watchGuard process crashes.
try {
const watcher = fs.watch(directoryName, { recursive: true }, () => ({}));
watcher.close();
}
catch { /*ignore*/ }
process.exit(0);