TLDR; * Remove Node.js streams and pull streams * Remove callbacks * Remove `peer-info` and `peer-id` --- Now that internals are all async/await/iterables and `fetch` the next step is to bubble up that goodness to the core API, removing the multiple stream APIs and removing callback support. I'm also proposing removing `peer-info` and `peer-id`, since these drastically increase the bundle size by pulling in `libp2p-crypto`, for which 99% of it's capability is unused. In place of `peer-id` we return a `CID`, which can easily be converted to a `PeerId` instance via: ```js const peerId = PeerId.createFromCID(peerCid) ``` In place of `peer-info` we return an object `{ id: CID, addrs: Multiaddr[] }`, which can easily be converted to a `PeerInfo` like: ```js const peerInfo = new PeerInfo(PeerId.createFromCID(info.id)) info.addrs.forEach(addr => peerInfo.multiaddrs.add(addr)) ``` refs ipfs/js-ipfs#1670 refs ipfs/js-ipfs#2611 refs ipfs-inactive/interface-js-ipfs-core#394 TODO: * [x] Refactor local tests * [x] Remove `addFromFs` and `addFromUrl` and export `globSource` and `urlSource` instead * [x] Refactor `interface-ipfs-core` tests * [x] Document new APIs in `interface-ipfs-core` * [x] Update README with API changes * [x] [Document upgrade path from Node.js/pull streams to async iterables](https://gist.github.com/alanshaw/04b2ddc35a6fff25c040c011ac6acf26) Depends on: * [x] ipfs/js-ipfs-utils#15 * [x] ipfs-inactive/interface-js-ipfs-core#567 BREAKING CHANGE: Callbacks are no longer supported on any API methods. Please use a utility such as [`callbackify`](https://www.npmjs.com/package/callbackify) on API methods that return Promises to emulate previous behaviour. BREAKING CHANGE: `PeerId` and `PeerInfo` classes are no longer statically exported from `ipfs-http-client` since they are no longer used internally. BREAKING CHANGE: `pin.add` results now contain a `cid` property (a [CID instance](https://github.com/multiformats/js-cid)) instead of a string `hash` property. BREAKING CHANGE: `pin.ls` now returns an async iterable. BREAKING CHANGE: `pin.ls` results now contain a `cid` property (a [CID instance](https://github.com/multiformats/js-cid)) instead of a string `hash` property. BREAKING CHANGE: `pin.rm` results now contain a `cid` property (a [CID instance](https://github.com/multiformats/js-cid)) instead of a string `hash` property. BREAKING CHANGE: `add` now returns an async iterable. BREAKING CHANGE: `add` results now contain a `cid` property (a [CID instance](https://github.com/multiformats/js-cid)) instead of a string `hash` property. BREAKING CHANGE: `addReadableStream`, `addPullStream` have been removed. BREAKING CHANGE: `ls` now returns an async iterable. BREAKING CHANGE: `ls` results now contain a `cid` property (whose value is a [CID instance](https://github.com/multiformats/js-cid)) instead of a `hash` property. BREAKING CHANGE: `files.ls` now returns an async iterable. BREAKING CHANGE: `files.readPullStream` and `files.readReadableStream` have been removed. BREAKING CHANGE: `files.read` now returns an async iterable. BREAKING CHANGE: `files.lsPullStream` and `files.lsReadableStream` have been removed. BREAKING CHANGE: `files.ls` now returns an async iterable. BREAKING CHANGE: `files.ls` results now contain a `cid` property (whose value is a [CID instance](https://github.com/multiformats/js-cid)) instead of a `hash` property. BREAKING CHANGE: `files.ls` no longer takes a `long` option (in core) - you will receive all data by default. BREAKING CHANGE: `files.stat` result now contains a `cid` property (whose value is a [CID instance](https://github.com/multiformats/js-cid)) instead of a `hash` property. BREAKING CHANGE: `get` now returns an async iterable. The `content` property value for objects yielded from the iterator is now an async iterable that yields [`BufferList`](https://github.com/rvagg/bl) objects. BREAKING CHANGE: `stats.bw` now returns an async iterable. BREAKING CHANGE: `addFromStream` has been removed. Use `add` instead. BREAKING CHANGE: `isIPFS` is no longer exported from the client, please `npm i is-ipfs` or include the CDN script tag `<script src="https://unpkg.com/is-ipfs/dist/index.min.js"></script>` to use this utility in your applications. BREAKING CHANGE: `addFromFs` has been removed. Please use the exported `globSource` utility and pass the result to `add`. See the [glob source documentation](https://github.com/ipfs/js-ipfs-http-client#glob-source) for more details and an example. BREAKING CHANGE: `addFromURL` has been removed. Please use the exported `urlSource` utility and pass the result to `add`. See the [URL source documentation](https://github.com/ipfs/js-ipfs-http-client#url-source) for more details and an example. BREAKING CHANGE: `name.resolve` now returns an async iterable. It yields increasingly more accurate resolved values as they are discovered until the best value is selected from the quorum of 16. The "best" resolved value is the last item yielded from the iterator. If you are interested only in this best value you could use `it-last` to extract it like so: ```js const last = require('it-last') await last(ipfs.name.resolve('/ipns/QmHash')) ``` BREAKING CHANGE: `block.rm` now returns an async iterable. BREAKING CHANGE: `block.rm` now yields objects of `{ cid: CID, error: Error }`. BREAKING CHANGE: `dht.findProvs`, `dht.provide`, `dht.put` and `dht.query` now all return an async iterable. BREAKING CHANGE: `dht.findPeer`, `dht.findProvs`, `dht.provide`, `dht.put` and `dht.query` now yield/return an object `{ id: CID, addrs: Multiaddr[] }` instead of a `PeerInfo` instance(s). BREAKING CHANGE: `refs` and `refs.local` now return an async iterable. BREAKING CHANGE: `object.data` now returns an async iterable that yields `Buffer` objects. BREAKING CHANGE: `ping` now returns an async iterable. BREAKING CHANGE: `repo.gc` now returns an async iterable. BREAKING CHANGE: `swarm.peers` now returns an array of objects with a `peer` property that is a `CID`, instead of a `PeerId` instance. BREAKING CHANGE: `swarm.addrs` now returns an array of objects `{ id: CID, addrs: Multiaddr[] }` instead of `PeerInfo` instances. BREAKING CHANGE: `block.stat` result now contains a `cid` property (whose value is a [CID instance](https://github.com/multiformats/js-cid)) instead of a `key` property. BREAKING CHANGE: `bitswap.wantlist` now returns an array of [CID](https://github.com/multiformats/js-cid) instances. BREAKING CHANGE: `bitswap.stat` result has changed - `wantlist` and `peers` values are now an array of [CID](https://github.com/multiformats/js-cid) instances.

--stream option support for ipfs.name.resolve? #2611

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