JS Wrapper or Higher Level API

[BryanB]

@DavidMtl

I was having the same problem as you re: keeping track of handles and keeping a linear sequence of promises without nesting or chaining.

Dumb DOM API questions

What’s the best way to free a handle in a chain of promises? I find myself having to “nest” my calls instead of chaining them because if I simply chain them I lose the reference of the handle used previously so I can’t free it once the chain is done. Or a simple example of the problem: window.safeMutableDataEntries.forEach(entriesHandle, (k, v) => { let key = String.fromCharCode.apply(null, k); let value = String.fromCharCode.apply(null, new Uint8Array(v.buf)); console.log(key +…

@loziniak did a good job tracking handles using objects. I souped up his code a little and it’s been working pretty well. This entire thread is probably worth reading as there are some other links.

Here’s an example using code from Loziniak’s repo (maidsafe-test/safe_api_example.html at master · loziniak/maidsafe-test · GitHub):

	let app = safeAPI.initialiseApp(app_info);
	app.authoriseAndConnect({_public: ['Read']});
	let md = app.quickRandomPublic({'this': 'is', 'a': 'test'});
	md.getString('this').then(console.log);
	md.getString('a').then(console.log);

There’s a single promise chain managed in app: all other calls and objects refer back to the promise chain in app. Each object (app, md) maintains its own handle, which is also extremely convenient. A call to safeMutableData.get(mdHandle, key) becomes md.get(key) because the handle is stored in md.