Hello all! First time posting here. I was curious if there was ever talk
about adding something similar to python's with syntax to JS. Obviously we
already have a "with" keyword, but I figure we could probably use "use" as
the keyword instead. I was thinking something like
// Some user defined resource that can be "entered" and "exited"
class MyResource {
// Function called when entered
async [Symbol.enter]() {
}
// Function called when exited
[Symbol.exit]() {
}
}
const resource = new MyResource();
async function useResource() {
use myResource {
// Inside here, resource has had "acquire" called on it
await doSomethingAsync();
// Once this block is finished executing (including async)
// release is called
}
// Release has been called now
}
Use would effectively be the equivalent of:
async function use(resource, body) {
await resource[Symbol.enter]();
try {
await body();
} finally {
await resource[Symbol.exit]();
}
}
Has something like this been considered before?
Thanks,
Dan
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