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## Re-bootstrapping
Re-bootstrapping allows deno devs to bench/profile/test JS-side changes without
doing a full `cargo build --release --bin deno` which takes roughly ~4mn on M1s
more on other machines which significantly slows down iteration &
experimentation.
## Example
```js
import { benchSync, rebootstrap } from "./tools/bench/mod.js";
const bootstrap = rebootstrap([
"webidl",
"console",
"url",
"web",
"fetch",
]);
benchSync("resp_w_h", 1e6, () =>
new bootstrap.fetch.Response("yolo", {
status: 200,
headers: {
server: "deno",
"content-type": "text/plain",
},
}));
```
This code can then benched and profiled (using Chrome's DevTools) similar to
regular userland code and the original source files appear in the DevTools as
you would expect.
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