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code-server-2/test/wtfnode.ts
2021-02-22 13:41:11 -07:00

36 lines
847 B
TypeScript

import * as util from "util"
import * as wtfnode from "wtfnode"
// Jest seems to hijack console.log in a way that makes the output difficult to
// read. So we'll write directly to process.stderr instead.
const write = (...args: [any, ...any]) => {
if (args.length > 0) {
process.stderr.write(util.format(...args) + "\n")
}
}
wtfnode.setLogger("info", write)
wtfnode.setLogger("warn", write)
wtfnode.setLogger("error", write)
let active = false
/**
* Start logging open handles periodically. This can be used to see what is
* hanging open if anything.
*/
export function setup(): void {
if (active) {
return
}
active = true
const interval = 5000
const wtfnodeDump = () => {
wtfnode.dump()
const t = setTimeout(wtfnodeDump, interval)
t.unref()
}
const t = setTimeout(wtfnodeDump, interval)
t.unref()
}