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refactor: convert files regular, name and refs APIs to async/await #2658
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A roundup of the following PRs: * closes #2658 * closes #2660 * closes #2661 * closes #2668 * closes #2674 * closes #2676 * closes #2680 * test fixes and other fix ups --- To allow us to pass the interface tests, the timeout option is now supported in the `object.get` and `refs` APIs. It doesn't actually cancel the operation all the way down the stack, but allows the method call to return when the timeout is reached. https://github.com/ipfs/js-ipfs/pull/2683/files#diff-47300e7ecd8989b6246221de88fc9a3cR170 --- Supersedes #2724 --- resolves #1438 resolves #1061 resolves #2257 resolves #2509 resolves #1670 refs ipfs-inactive/interface-js-ipfs-core#394 BREAKING CHANGE: `IPFS.createNode` removed BREAKING CHANGE: IPFS is not a class that can be instantiated - use `IPFS.create`. An IPFS node instance is not an event emitter. BREAKING CHANGE: Instance `.ready` property removed. Please use `IPFS.create` instead. 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.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: `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. BREAKING CHANGE: the `init` option passed to the IPFS constructor will now not take any initialization steps if it is set to `false`. Previously, the repo would be initialized if it already existed. This is no longer the case. If you wish to initialize a node but only if the repo exists, pass `init: { allowNew: false }` to the constructor. BREAKING CHANGE: removed `file ls` command from the CLI and HTTP API. BREAKING CHANGE: Delegated peer and content routing modules are no longer included as part of core (but are still available if starting a js-ipfs daemon from the command line). If you wish to use delegated routing and are creating your node _programmatically_ in Node.js or the browser you must `npm install libp2p-delegated-content-routing` and/or `npm install libp2p-delegated-peer-routing` and provide configured instances of them in [`options.libp2p`](https://github.com/ipfs/js-ipfs#optionslibp2p). See the module repos for further instructions: - https://github.com/libp2p/js-libp2p-delegated-content-routing - https://github.com/libp2p/js-libp2p-delegated-peer-routing
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This converts the regular files API to async await (removing callbacks and Node.js/pull streams). Due to
refsdepending onresolvewhich depends on thenameAPI, those APIs have also been converted.Tests are not yet refactored and definitely won't pass yet.
As an observation, it's really nice to see which APIs are available at different node states.
(obviously these aren't complete yet)