Joshua Bell inexorabletash

This is a hacky prototype of what IDB-on-Promises could look like.

STATUS: See this updated proposal instead.

See also:

STATUS: Obsolete - see this updated proposal instead.

Extend IDBDatabase with:

interface IDBDatabase {
  IDBExplicitTransaction explicitTransaction(scope, mode);
};

... to support more fine-grained commenting and collaboration.

Status: Initial thought experiment. Feedback welcome.

There are times when Indexed DB's transaction-centric API is too heavyweight:

Indexed DB - N-Dimensional Selection

We have an index with keys of the form:

[ dim1, dim2, dim3, ... ]

e.g. created with:

	// Copyright 2019 Google LLC.
	// SPDX-License-Identifier: Apache-2.0

	// Basic p(r)olyfill for proposed feature

	// This defines no successor of empty arrays, so the range for prefix
	// [] or [[],[]] has no upper bound.
	// An alternate definition would preclude adding additional nesting,
	// so the range for prefix [] would have upper bound [[]] and the
	// range for prefix [[], []] would have upper bound [[], [[]]].

	// Copyright 2019 Google LLC.
	// SPDX-License-Identifier: Apache-2.0

	var name = 'db' + Date.now();
	var openReq = indexedDB.open(name, 1);
	openReq.onupgradeneeded = function() {
	var db = openReq.result;
	var store = db.createObjectStore('store');
	for (var i = 0; i < 100; i += 10)
	store.put("record-" + i, i);

	// http://cautionsingularityahead.blogspot.com/2012/07/resource-using-in-javascript.html

	// Say you have a heavy-weight resource that you can explicitly finalize - either through
	// some API or just by dropping a reference when you're done even if you want to hold onto
	// the wrapper:
	function Resource(a) {
	var res = "a resource of " + a;

	this.get = function() {
	return res;

	# Custom prompt
	function prompt {
	write-host -NoNewLine -ForegroundColor Red $pwd

	# Current git branch name
	$branch = git rev-parse --abbrev-ref HEAD
	if ($branch) {
	write-host -NoNewLine -ForegroundColor Green (' [' + $branch + ']')
	}